2012-04-29 06:16:44 +00:00
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#include <sfc/sfc.hpp>
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2010-08-09 13:28:56 +00:00
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2012-04-26 10:51:13 +00:00
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namespace SuperFamicom {
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2010-08-09 13:28:56 +00:00
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Update to v085r03 release.
byuu says:
Changelog:
- fixed cursor being visible under Metacity window manager (hopefully
doesn't cause regression with other WMs)
- show normal cursor when using SDL video driver
- added menu accelerators (meh, why not?)
- removed debugvirtual, ChipDebugger and chip/debugger functionality
entirely
- alt/smp disassembler moved up
- fixed alt/smp incw/decw instructions (unsigned->uint16 for internal
variables)
My plan going forward for a debugger is not to hardcode functionality
that causes the 10-15% slowdown right into the emulator itself.
Instead, I'm going to make a callback class, which will be a specialized
version of nall::function:
- can call function even if not assigned (results in no-op, return type
must have a trivial default constructor)
- if compiled without #define DEBUGGER, the entire thing turns into
a huge no-op; and will be eliminated entirely when compiled
- strategically place the functions: cb_step, cb_read, cb_write, etc.
From here, the ui-debugger GUI will bind the callbacks, implement
breakpoint checking, usage table generation, etc itself.
I'll probably have to add some breakout commands to exit the emulation
core prior to a frame event in some cases as well.
I didn't initially want any debugger-related stuff in the base cores,
but the #if debugger sCPUDebugger #else sCPU #endif stuff was already
more of a burden than this will be.
2012-02-04 09:23:53 +00:00
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CPU cpu;
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2016-03-26 01:56:15 +00:00
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#include "dma.cpp"
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#include "memory.cpp"
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#include "mmio.cpp"
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#include "timing.cpp"
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#include "irq.cpp"
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#include "joypad.cpp"
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2010-08-09 13:28:56 +00:00
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#include "serialization.cpp"
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2016-03-26 01:56:15 +00:00
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auto CPU::interruptPending() const -> bool { return status.interrupt_pending; }
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auto CPU::pio() const -> uint8 { return status.pio; }
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auto CPU::joylatch() const -> bool { return status.joypad_strobe_latch; }
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2010-08-09 13:28:56 +00:00
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Update to v095r05 release.
byuu says:
Changelog:
- GBA: lots of emulation improvements
- PPU PRAM is 16-bits wide
- DMA masks &~1/Half, &~3/Word
- VRAM OBJ 8-bit writes are ignored
- OAM 8-bit writes are ignored
- BGnCNT unused bits are writable*
- BG(0,1)CNT can't set the d13
- BLDALPHA is readable (fixes Donkey Kong Country, etc)
- SNES: lots of code cleanups
- sfc/chip => sfc/coprocessor
- UI: save most recent controller selection
GBA test scores: 1552/1552, 37/38, 1020/1260
(* forgot to add the value to the read function, so endrift's I/O tests
for them will fail. Fixed locally.)
Note: SNES is the only system with multiple controller/expansion port
options, and as such is the only one with a "None" option. Because it's
shared by the controller and expansion port, it ends up sorted first in
the list. This means that on your first run, you'll need to go to Super
Famicom->Controller Port 1 and select "Gamepad", otherwise input won't
work.
Also note that changing the expansion port device requires loading a new
cart. Unlike controllers, you aren't meant to hotplug expansion port
devices.
2015-11-12 10:15:03 +00:00
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CPU::CPU() {
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PPUcounter::scanline = {&CPU::scanline, this};
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}
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auto CPU::step(uint clocks) -> void {
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2010-08-09 13:28:56 +00:00
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smp.clock -= clocks * (uint64)smp.frequency;
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ppu.clock -= clocks;
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Update to v098r01 release.
byuu says:
Changelog:
- SFC: balanced profile removed
- SFC: performance profile removed
- SFC: code for handling non-threaded CPU, SMP, DSP, PPU removed
- SFC: Coprocessor, Controller (and expansion port) shared Thread code
merged to SFC::Cothread
- Cothread here just means "Thread with CPU affinity" (couldn't think
of a better name, sorry)
- SFC: CPU now has vector<Thread*> coprocessors, peripherals;
- this is the beginning of work to allow expansion port devices to be
dynamically changed at run-time
- ruby: all audio drivers default to 48000hz instead of 22050hz now if
no frequency is assigned
- note: the WASAPI driver can default to whatever the native frequency
is; doesn't have to be 48000hz
- tomoko: removed the ability to change the frequency from the UI (but
it will display the frequency used)
- tomoko: removed the timing settings panel
- the goal is to work toward smooth video via adaptive sync
- the model is broken by not being in control of the audio frequency
anyway
- it's further broken by PAL running at 50hz and WSC running at 75hz
- it was always broken anyway by SNES interlace timing varying from
progressive timing
- higan: audio/ stub created (for now, it's just nall/dsp/ moved here
and included as a header)
- higan: video/ stub created
- higan/GNUmakefile: now includes build rules for essential components
(libco, emulator, audio, video)
The audio changes are in preparation to merge wareya's awesome WASAPI
work without the need for the nall/dsp resampler.
2016-04-09 03:40:12 +00:00
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for(auto coprocessor : coprocessors) {
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coprocessor->clock -= clocks * (uint64)coprocessor->frequency;
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2010-08-09 13:28:56 +00:00
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}
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Update to v098r01 release.
byuu says:
Changelog:
- SFC: balanced profile removed
- SFC: performance profile removed
- SFC: code for handling non-threaded CPU, SMP, DSP, PPU removed
- SFC: Coprocessor, Controller (and expansion port) shared Thread code
merged to SFC::Cothread
- Cothread here just means "Thread with CPU affinity" (couldn't think
of a better name, sorry)
- SFC: CPU now has vector<Thread*> coprocessors, peripherals;
- this is the beginning of work to allow expansion port devices to be
dynamically changed at run-time
- ruby: all audio drivers default to 48000hz instead of 22050hz now if
no frequency is assigned
- note: the WASAPI driver can default to whatever the native frequency
is; doesn't have to be 48000hz
- tomoko: removed the ability to change the frequency from the UI (but
it will display the frequency used)
- tomoko: removed the timing settings panel
- the goal is to work toward smooth video via adaptive sync
- the model is broken by not being in control of the audio frequency
anyway
- it's further broken by PAL running at 50hz and WSC running at 75hz
- it was always broken anyway by SNES interlace timing varying from
progressive timing
- higan: audio/ stub created (for now, it's just nall/dsp/ moved here
and included as a header)
- higan: video/ stub created
- higan/GNUmakefile: now includes build rules for essential components
(libco, emulator, audio, video)
The audio changes are in preparation to merge wareya's awesome WASAPI
work without the need for the nall/dsp resampler.
2016-04-09 03:40:12 +00:00
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for(auto peripheral : peripherals) {
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peripheral->clock -= clocks * (uint64)peripheral->frequency;
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}
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synchronizePeripherals();
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2010-08-09 13:28:56 +00:00
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}
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Update to v095r05 release.
byuu says:
Changelog:
- GBA: lots of emulation improvements
- PPU PRAM is 16-bits wide
- DMA masks &~1/Half, &~3/Word
- VRAM OBJ 8-bit writes are ignored
- OAM 8-bit writes are ignored
- BGnCNT unused bits are writable*
- BG(0,1)CNT can't set the d13
- BLDALPHA is readable (fixes Donkey Kong Country, etc)
- SNES: lots of code cleanups
- sfc/chip => sfc/coprocessor
- UI: save most recent controller selection
GBA test scores: 1552/1552, 37/38, 1020/1260
(* forgot to add the value to the read function, so endrift's I/O tests
for them will fail. Fixed locally.)
Note: SNES is the only system with multiple controller/expansion port
options, and as such is the only one with a "None" option. Because it's
shared by the controller and expansion port, it ends up sorted first in
the list. This means that on your first run, you'll need to go to Super
Famicom->Controller Port 1 and select "Gamepad", otherwise input won't
work.
Also note that changing the expansion port device requires loading a new
cart. Unlike controllers, you aren't meant to hotplug expansion port
devices.
2015-11-12 10:15:03 +00:00
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auto CPU::synchronizeSMP() -> void {
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Update to v098r01 release.
byuu says:
Changelog:
- SFC: balanced profile removed
- SFC: performance profile removed
- SFC: code for handling non-threaded CPU, SMP, DSP, PPU removed
- SFC: Coprocessor, Controller (and expansion port) shared Thread code
merged to SFC::Cothread
- Cothread here just means "Thread with CPU affinity" (couldn't think
of a better name, sorry)
- SFC: CPU now has vector<Thread*> coprocessors, peripherals;
- this is the beginning of work to allow expansion port devices to be
dynamically changed at run-time
- ruby: all audio drivers default to 48000hz instead of 22050hz now if
no frequency is assigned
- note: the WASAPI driver can default to whatever the native frequency
is; doesn't have to be 48000hz
- tomoko: removed the ability to change the frequency from the UI (but
it will display the frequency used)
- tomoko: removed the timing settings panel
- the goal is to work toward smooth video via adaptive sync
- the model is broken by not being in control of the audio frequency
anyway
- it's further broken by PAL running at 50hz and WSC running at 75hz
- it was always broken anyway by SNES interlace timing varying from
progressive timing
- higan: audio/ stub created (for now, it's just nall/dsp/ moved here
and included as a header)
- higan: video/ stub created
- higan/GNUmakefile: now includes build rules for essential components
(libco, emulator, audio, video)
The audio changes are in preparation to merge wareya's awesome WASAPI
work without the need for the nall/dsp resampler.
2016-04-09 03:40:12 +00:00
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if(smp.clock < 0) co_switch(smp.thread);
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2010-08-09 13:28:56 +00:00
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}
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Update to v095r05 release.
byuu says:
Changelog:
- GBA: lots of emulation improvements
- PPU PRAM is 16-bits wide
- DMA masks &~1/Half, &~3/Word
- VRAM OBJ 8-bit writes are ignored
- OAM 8-bit writes are ignored
- BGnCNT unused bits are writable*
- BG(0,1)CNT can't set the d13
- BLDALPHA is readable (fixes Donkey Kong Country, etc)
- SNES: lots of code cleanups
- sfc/chip => sfc/coprocessor
- UI: save most recent controller selection
GBA test scores: 1552/1552, 37/38, 1020/1260
(* forgot to add the value to the read function, so endrift's I/O tests
for them will fail. Fixed locally.)
Note: SNES is the only system with multiple controller/expansion port
options, and as such is the only one with a "None" option. Because it's
shared by the controller and expansion port, it ends up sorted first in
the list. This means that on your first run, you'll need to go to Super
Famicom->Controller Port 1 and select "Gamepad", otherwise input won't
work.
Also note that changing the expansion port device requires loading a new
cart. Unlike controllers, you aren't meant to hotplug expansion port
devices.
2015-11-12 10:15:03 +00:00
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auto CPU::synchronizePPU() -> void {
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Update to v098r01 release.
byuu says:
Changelog:
- SFC: balanced profile removed
- SFC: performance profile removed
- SFC: code for handling non-threaded CPU, SMP, DSP, PPU removed
- SFC: Coprocessor, Controller (and expansion port) shared Thread code
merged to SFC::Cothread
- Cothread here just means "Thread with CPU affinity" (couldn't think
of a better name, sorry)
- SFC: CPU now has vector<Thread*> coprocessors, peripherals;
- this is the beginning of work to allow expansion port devices to be
dynamically changed at run-time
- ruby: all audio drivers default to 48000hz instead of 22050hz now if
no frequency is assigned
- note: the WASAPI driver can default to whatever the native frequency
is; doesn't have to be 48000hz
- tomoko: removed the ability to change the frequency from the UI (but
it will display the frequency used)
- tomoko: removed the timing settings panel
- the goal is to work toward smooth video via adaptive sync
- the model is broken by not being in control of the audio frequency
anyway
- it's further broken by PAL running at 50hz and WSC running at 75hz
- it was always broken anyway by SNES interlace timing varying from
progressive timing
- higan: audio/ stub created (for now, it's just nall/dsp/ moved here
and included as a header)
- higan: video/ stub created
- higan/GNUmakefile: now includes build rules for essential components
(libco, emulator, audio, video)
The audio changes are in preparation to merge wareya's awesome WASAPI
work without the need for the nall/dsp resampler.
2016-04-09 03:40:12 +00:00
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if(ppu.clock < 0) co_switch(ppu.thread);
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2010-08-09 13:28:56 +00:00
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}
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Update to v095r05 release.
byuu says:
Changelog:
- GBA: lots of emulation improvements
- PPU PRAM is 16-bits wide
- DMA masks &~1/Half, &~3/Word
- VRAM OBJ 8-bit writes are ignored
- OAM 8-bit writes are ignored
- BGnCNT unused bits are writable*
- BG(0,1)CNT can't set the d13
- BLDALPHA is readable (fixes Donkey Kong Country, etc)
- SNES: lots of code cleanups
- sfc/chip => sfc/coprocessor
- UI: save most recent controller selection
GBA test scores: 1552/1552, 37/38, 1020/1260
(* forgot to add the value to the read function, so endrift's I/O tests
for them will fail. Fixed locally.)
Note: SNES is the only system with multiple controller/expansion port
options, and as such is the only one with a "None" option. Because it's
shared by the controller and expansion port, it ends up sorted first in
the list. This means that on your first run, you'll need to go to Super
Famicom->Controller Port 1 and select "Gamepad", otherwise input won't
work.
Also note that changing the expansion port device requires loading a new
cart. Unlike controllers, you aren't meant to hotplug expansion port
devices.
2015-11-12 10:15:03 +00:00
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auto CPU::synchronizeCoprocessors() -> void {
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Update to v098r01 release.
byuu says:
Changelog:
- SFC: balanced profile removed
- SFC: performance profile removed
- SFC: code for handling non-threaded CPU, SMP, DSP, PPU removed
- SFC: Coprocessor, Controller (and expansion port) shared Thread code
merged to SFC::Cothread
- Cothread here just means "Thread with CPU affinity" (couldn't think
of a better name, sorry)
- SFC: CPU now has vector<Thread*> coprocessors, peripherals;
- this is the beginning of work to allow expansion port devices to be
dynamically changed at run-time
- ruby: all audio drivers default to 48000hz instead of 22050hz now if
no frequency is assigned
- note: the WASAPI driver can default to whatever the native frequency
is; doesn't have to be 48000hz
- tomoko: removed the ability to change the frequency from the UI (but
it will display the frequency used)
- tomoko: removed the timing settings panel
- the goal is to work toward smooth video via adaptive sync
- the model is broken by not being in control of the audio frequency
anyway
- it's further broken by PAL running at 50hz and WSC running at 75hz
- it was always broken anyway by SNES interlace timing varying from
progressive timing
- higan: audio/ stub created (for now, it's just nall/dsp/ moved here
and included as a header)
- higan: video/ stub created
- higan/GNUmakefile: now includes build rules for essential components
(libco, emulator, audio, video)
The audio changes are in preparation to merge wareya's awesome WASAPI
work without the need for the nall/dsp resampler.
2016-04-09 03:40:12 +00:00
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for(auto coprocessor : coprocessors) {
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if(coprocessor->clock < 0) co_switch(coprocessor->thread);
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2010-08-09 13:28:56 +00:00
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}
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}
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Update to v098r01 release.
byuu says:
Changelog:
- SFC: balanced profile removed
- SFC: performance profile removed
- SFC: code for handling non-threaded CPU, SMP, DSP, PPU removed
- SFC: Coprocessor, Controller (and expansion port) shared Thread code
merged to SFC::Cothread
- Cothread here just means "Thread with CPU affinity" (couldn't think
of a better name, sorry)
- SFC: CPU now has vector<Thread*> coprocessors, peripherals;
- this is the beginning of work to allow expansion port devices to be
dynamically changed at run-time
- ruby: all audio drivers default to 48000hz instead of 22050hz now if
no frequency is assigned
- note: the WASAPI driver can default to whatever the native frequency
is; doesn't have to be 48000hz
- tomoko: removed the ability to change the frequency from the UI (but
it will display the frequency used)
- tomoko: removed the timing settings panel
- the goal is to work toward smooth video via adaptive sync
- the model is broken by not being in control of the audio frequency
anyway
- it's further broken by PAL running at 50hz and WSC running at 75hz
- it was always broken anyway by SNES interlace timing varying from
progressive timing
- higan: audio/ stub created (for now, it's just nall/dsp/ moved here
and included as a header)
- higan: video/ stub created
- higan/GNUmakefile: now includes build rules for essential components
(libco, emulator, audio, video)
The audio changes are in preparation to merge wareya's awesome WASAPI
work without the need for the nall/dsp resampler.
2016-04-09 03:40:12 +00:00
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auto CPU::synchronizePeripherals() -> void {
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for(auto peripheral : peripherals) {
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if(peripheral->clock < 0) co_switch(peripheral->thread);
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}
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Update to v079r06 release.
byuu says:
It does add some more code to the CPU::step() function, so performance
probably went down actually, by about 1%. Removing the input.tick() call
didn't compensate as much as I'd hoped.
Hooked up Super Scope and Justifier support. The good news is that the
Justifier alignment doesn't get fucked up anymore when you go
off-screen. Never could fix that in the old version.
The bad news is that it takes a major speed hit for the time being.
I need to figure out how to run the CPU and input threads out of order.
Every time I try, the input gets thrown off by most of a scanline.
Right now, I'm forced to sync constantly to get the latching position
really accurate. But worst case, I can cut the syncs down by skipping
large chunks around the cursor position, +/-40 clock cycles. So it's
only temporarily slow.
Lastly, killed the old Input class, merged Controllers class into it.
I actually like Controllers as a name better, but it doesn't jive with
video/audio/input, so oh well.
2011-06-25 12:56:32 +00:00
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}
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2016-02-09 11:51:12 +00:00
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auto CPU::Enter() -> void {
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while(true) scheduler.synchronize(), cpu.main();
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}
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2010-08-09 13:28:56 +00:00
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2016-02-09 11:51:12 +00:00
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auto CPU::main() -> void {
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if(status.interrupt_pending) {
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status.interrupt_pending = false;
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if(status.nmi_pending) {
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status.nmi_pending = false;
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Update to v097r32 release.
byuu says:
Changelog:
- bsnes-accuracy emulates reset vector properly[1]
- bsnes-balanced compiles once more
- bsnes-performance compiles once more
The balanced and performance profiles are fixed for the last time. They
will be removed for v098r01.
Please test this WIP as much as you can. I intend to release v098 soon.
I know save states are a little unstable for the WS/WSC, but they work
well enough for a release. If I can't figure it out soon, I'm going to
post v098 anyway.
[1] this one's been a really long time coming, but ... one of the bugs
I found when I translated Tekkaman Blade was that my translation patch
would crash every now and again when you hit the reset button on a real
SNES, but it always worked upon power on.
Turns out that while power-on initializes the stack register to $01ff,
reset does things a little bit differently. Reset actually triggers the
reset interrupt vector after putting the CPU into emulation mode, but it
doesn't initialize the stack pointer. The net effect is that the stack
high byte is set to $01, and the low byte is left as it was. And then
the reset vector runs, which pushes the low 16-bits of the program
counter, plus the processor flags, onto the stack frame. So you can
actually tell where the game was at when the system was reset ... sort
of.
It's a really weird behavior to be sure. But here's the catch: say
you're hacking a game, and so you hook the reset vector with jsl
showMyTranslationCreditsSplashScreen, and inside this new subroutine,
you then perform whatever bytes you hijacked, and then initialize the
stack frame to go about your business drawing the screen, and when
you're done, you return via rtl.
Generally, this works fine. But if S={0100, 0101, or 0102}, then the
stack will wrap due to being in emulation mode at reset. So it will
write to {0100, 01ff, 01fe}. But now in your subroutine, you enable
native mode. So when you return from your subroutine hijack, it reads
the return address from {01ff, 0200, 0201} instead of the expected
{01ff, 0100, 0101}. Thus, you get an invalid address back, and you
"return" to the wrong location, and your program dies.
The odds of this happening depend on how the game handles S, but
generally speaking, it's a ~1:85 chance.
By emulating this behavior, I'll likely expose this bug in many ROM
hacks that do splash screen hooks like this, including my own Tekkaman
Blade translation. And it's also very possible that there are commercial
games that screw this up as well.
But, it's what the real system does. So if any crashes start happening
as of this WIP upon resetting the game, well ... it'd happen on real
hardware, too.
2016-04-03 11:17:20 +00:00
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regs.vector = !regs.e ? 0xffea : 0xfffa;
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2016-03-26 01:56:15 +00:00
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interrupt();
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2016-02-09 11:51:12 +00:00
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debugger.op_nmi();
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} else if(status.irq_pending) {
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status.irq_pending = false;
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Update to v097r32 release.
byuu says:
Changelog:
- bsnes-accuracy emulates reset vector properly[1]
- bsnes-balanced compiles once more
- bsnes-performance compiles once more
The balanced and performance profiles are fixed for the last time. They
will be removed for v098r01.
Please test this WIP as much as you can. I intend to release v098 soon.
I know save states are a little unstable for the WS/WSC, but they work
well enough for a release. If I can't figure it out soon, I'm going to
post v098 anyway.
[1] this one's been a really long time coming, but ... one of the bugs
I found when I translated Tekkaman Blade was that my translation patch
would crash every now and again when you hit the reset button on a real
SNES, but it always worked upon power on.
Turns out that while power-on initializes the stack register to $01ff,
reset does things a little bit differently. Reset actually triggers the
reset interrupt vector after putting the CPU into emulation mode, but it
doesn't initialize the stack pointer. The net effect is that the stack
high byte is set to $01, and the low byte is left as it was. And then
the reset vector runs, which pushes the low 16-bits of the program
counter, plus the processor flags, onto the stack frame. So you can
actually tell where the game was at when the system was reset ... sort
of.
It's a really weird behavior to be sure. But here's the catch: say
you're hacking a game, and so you hook the reset vector with jsl
showMyTranslationCreditsSplashScreen, and inside this new subroutine,
you then perform whatever bytes you hijacked, and then initialize the
stack frame to go about your business drawing the screen, and when
you're done, you return via rtl.
Generally, this works fine. But if S={0100, 0101, or 0102}, then the
stack will wrap due to being in emulation mode at reset. So it will
write to {0100, 01ff, 01fe}. But now in your subroutine, you enable
native mode. So when you return from your subroutine hijack, it reads
the return address from {01ff, 0200, 0201} instead of the expected
{01ff, 0100, 0101}. Thus, you get an invalid address back, and you
"return" to the wrong location, and your program dies.
The odds of this happening depend on how the game handles S, but
generally speaking, it's a ~1:85 chance.
By emulating this behavior, I'll likely expose this bug in many ROM
hacks that do splash screen hooks like this, including my own Tekkaman
Blade translation. And it's also very possible that there are commercial
games that screw this up as well.
But, it's what the real system does. So if any crashes start happening
as of this WIP upon resetting the game, well ... it'd happen on real
hardware, too.
2016-04-03 11:17:20 +00:00
|
|
|
regs.vector = !regs.e ? 0xffee : 0xfffe;
|
2016-03-26 01:56:15 +00:00
|
|
|
interrupt();
|
2016-02-09 11:51:12 +00:00
|
|
|
debugger.op_irq();
|
|
|
|
|
} else if(status.reset_pending) {
|
|
|
|
|
status.reset_pending = false;
|
Update to v097r32 release.
byuu says:
Changelog:
- bsnes-accuracy emulates reset vector properly[1]
- bsnes-balanced compiles once more
- bsnes-performance compiles once more
The balanced and performance profiles are fixed for the last time. They
will be removed for v098r01.
Please test this WIP as much as you can. I intend to release v098 soon.
I know save states are a little unstable for the WS/WSC, but they work
well enough for a release. If I can't figure it out soon, I'm going to
post v098 anyway.
[1] this one's been a really long time coming, but ... one of the bugs
I found when I translated Tekkaman Blade was that my translation patch
would crash every now and again when you hit the reset button on a real
SNES, but it always worked upon power on.
Turns out that while power-on initializes the stack register to $01ff,
reset does things a little bit differently. Reset actually triggers the
reset interrupt vector after putting the CPU into emulation mode, but it
doesn't initialize the stack pointer. The net effect is that the stack
high byte is set to $01, and the low byte is left as it was. And then
the reset vector runs, which pushes the low 16-bits of the program
counter, plus the processor flags, onto the stack frame. So you can
actually tell where the game was at when the system was reset ... sort
of.
It's a really weird behavior to be sure. But here's the catch: say
you're hacking a game, and so you hook the reset vector with jsl
showMyTranslationCreditsSplashScreen, and inside this new subroutine,
you then perform whatever bytes you hijacked, and then initialize the
stack frame to go about your business drawing the screen, and when
you're done, you return via rtl.
Generally, this works fine. But if S={0100, 0101, or 0102}, then the
stack will wrap due to being in emulation mode at reset. So it will
write to {0100, 01ff, 01fe}. But now in your subroutine, you enable
native mode. So when you return from your subroutine hijack, it reads
the return address from {01ff, 0200, 0201} instead of the expected
{01ff, 0100, 0101}. Thus, you get an invalid address back, and you
"return" to the wrong location, and your program dies.
The odds of this happening depend on how the game handles S, but
generally speaking, it's a ~1:85 chance.
By emulating this behavior, I'll likely expose this bug in many ROM
hacks that do splash screen hooks like this, including my own Tekkaman
Blade translation. And it's also very possible that there are commercial
games that screw this up as well.
But, it's what the real system does. So if any crashes start happening
as of this WIP upon resetting the game, well ... it'd happen on real
hardware, too.
2016-04-03 11:17:20 +00:00
|
|
|
addClocks(132);
|
|
|
|
|
regs.vector = 0xfffc;
|
|
|
|
|
interrupt();
|
|
|
|
|
} else if(status.power_pending) {
|
|
|
|
|
status.power_pending = false;
|
2016-03-26 01:56:15 +00:00
|
|
|
addClocks(186);
|
2016-02-09 11:51:12 +00:00
|
|
|
regs.pc.l = bus.read(0xfffc, regs.mdr);
|
|
|
|
|
regs.pc.h = bus.read(0xfffd, regs.mdr);
|
2010-08-09 13:28:56 +00:00
|
|
|
}
|
|
|
|
|
}
|
2016-02-09 11:51:12 +00:00
|
|
|
|
2012-02-06 12:03:45 +00:00
|
|
|
debugger.op_exec(regs.pc.d);
|
2016-03-26 01:56:15 +00:00
|
|
|
instruction();
|
2010-08-09 13:28:56 +00:00
|
|
|
}
|
|
|
|
|
|
Update to v095r05 release.
byuu says:
Changelog:
- GBA: lots of emulation improvements
- PPU PRAM is 16-bits wide
- DMA masks &~1/Half, &~3/Word
- VRAM OBJ 8-bit writes are ignored
- OAM 8-bit writes are ignored
- BGnCNT unused bits are writable*
- BG(0,1)CNT can't set the d13
- BLDALPHA is readable (fixes Donkey Kong Country, etc)
- SNES: lots of code cleanups
- sfc/chip => sfc/coprocessor
- UI: save most recent controller selection
GBA test scores: 1552/1552, 37/38, 1020/1260
(* forgot to add the value to the read function, so endrift's I/O tests
for them will fail. Fixed locally.)
Note: SNES is the only system with multiple controller/expansion port
options, and as such is the only one with a "None" option. Because it's
shared by the controller and expansion port, it ends up sorted first in
the list. This means that on your first run, you'll need to go to Super
Famicom->Controller Port 1 and select "Gamepad", otherwise input won't
work.
Also note that changing the expansion port device requires loading a new
cart. Unlike controllers, you aren't meant to hotplug expansion port
devices.
2015-11-12 10:15:03 +00:00
|
|
|
auto CPU::enable() -> void {
|
2016-03-26 01:56:15 +00:00
|
|
|
function<auto (uint24, uint8) -> uint8> reader;
|
|
|
|
|
function<auto (uint24, uint8) -> void> writer;
|
|
|
|
|
|
|
|
|
|
reader = {&CPU::apuPortRead, this};
|
|
|
|
|
writer = {&CPU::apuPortWrite, this};
|
|
|
|
|
bus.map(reader, writer, 0x00, 0x3f, 0x2140, 0x217f);
|
|
|
|
|
bus.map(reader, writer, 0x80, 0xbf, 0x2140, 0x217f);
|
Update to v074r11 release.
byuu says:
Changelog:
- debugger compiles on all three profiles
- libsnes compiles on all three platforms (no API changes to libsnes)
- memory.cpp : namespace memory removed (wram -> cpu, apuram -> smp,
vram, oam, cgram -> ppu)
- sa1.cpp : namespace memory removed (SA-1 specific functions merged
inline to SA1::bus_read,write)
- GameBoy: added serial link support with interrupts and proper 8192hz
timing, but obviously it acts as if no other GB is connected to it
- GameBoy: added STAT OAM interrupt, and better STAT d1,d0 mode values
- UI: since Qt is dead, I've renamed the config files back to bsnes.cfg
and bsnes-geometry.cfg
- SA1: IRAM was not syncing to CPU on SA-1 side
- PPU/Accuracy and PPU/Performance needed Sprite oam renamed to Sprite
sprite; so that I could add uint8 oam[544]
- makes more sense anyway, OAM = object attribute memory, obj or
sprite are better names for Sprite rendering class
- more cleanup
2011-01-24 09:03:17 +00:00
|
|
|
|
2016-03-26 01:56:15 +00:00
|
|
|
reader = {&CPU::cpuPortRead, this};
|
|
|
|
|
writer = {&CPU::cpuPortWrite, this};
|
|
|
|
|
bus.map(reader, writer, 0x00, 0x3f, 0x2180, 0x2183);
|
|
|
|
|
bus.map(reader, writer, 0x80, 0xbf, 0x2180, 0x2183);
|
Update to v074r11 release.
byuu says:
Changelog:
- debugger compiles on all three profiles
- libsnes compiles on all three platforms (no API changes to libsnes)
- memory.cpp : namespace memory removed (wram -> cpu, apuram -> smp,
vram, oam, cgram -> ppu)
- sa1.cpp : namespace memory removed (SA-1 specific functions merged
inline to SA1::bus_read,write)
- GameBoy: added serial link support with interrupts and proper 8192hz
timing, but obviously it acts as if no other GB is connected to it
- GameBoy: added STAT OAM interrupt, and better STAT d1,d0 mode values
- UI: since Qt is dead, I've renamed the config files back to bsnes.cfg
and bsnes-geometry.cfg
- SA1: IRAM was not syncing to CPU on SA-1 side
- PPU/Accuracy and PPU/Performance needed Sprite oam renamed to Sprite
sprite; so that I could add uint8 oam[544]
- makes more sense anyway, OAM = object attribute memory, obj or
sprite are better names for Sprite rendering class
- more cleanup
2011-01-24 09:03:17 +00:00
|
|
|
|
Update to v091r05 release.
[No prior releases were posted to the WIP thread. -Ed.]
byuu says:
Super Famicom mapping system has been reworked as discussed with the
mask= changes. offset becomes base, mode is gone. Also added support for
comma-separated fields in the address fields, to reduce the number of
map lines needed.
<?xml version="1.0" encoding="UTF-8"?>
<cartridge region="NTSC">
<superfx revision="2">
<rom name="program.rom" size="0x200000"/>
<ram name="save.rwm" size="0x8000"/>
<map id="io" address="00-3f,80-bf:3000-32ff"/>
<map id="rom" address="00-3f:8000-ffff" mask="0x8000"/>
<map id="rom" address="40-5f:0000-ffff"/>
<map id="ram" address="00-3f,80-bf:6000-7fff" size="0x2000"/>
<map id="ram" address="70-71:0000-ffff"/>
</superfx>
</cartridge>
Or in BML:
cartridge region=NTSC
superfx revision=2
rom name=program.rom size=0x200000
ram name=save.rwm size=0x8000
map id=io address=00-3f,80-bf:3000-32ff
map id=rom address=00-3f:8000-ffff mask=0x8000
map id=rom address=40-5f:0000-ffff
map id=ram address=00-3f,80-bf:6000-7fff size=0x2000
map id=ram address=70-71:0000-ffff
As a result of the changes, old mappings will no longer work. The above
XML example will run Super Mario World 2: Yoshi's Island. Otherwise,
you'll have to write your own.
All that's left now is to work some sort of database mapping system in,
so I can start dumping carts en masse.
The NES changes that FitzRoy asked for are mostly in as well.
Also, part of the reason I haven't released a WIP ... but fuck it, I'm
not going to wait forever to post a new WIP.
I've added a skeleton driver to emulate Campus Challenge '92 and
Powerfest '94. There's no actual emulation, except for the stuff I can
glean from looking at the pictures of the board. It has a DSP-1 (so
SR/DR registers), four ROMs that map in and out, RAM, etc.
I've also added preliminary mapping to upload high scores to a website,
but obviously I need the ROMs first.
2012-10-09 08:25:32 +00:00
|
|
|
bus.map(reader, writer, 0x00, 0x3f, 0x4016, 0x4017);
|
|
|
|
|
bus.map(reader, writer, 0x80, 0xbf, 0x4016, 0x4017);
|
Update to v074r11 release.
byuu says:
Changelog:
- debugger compiles on all three profiles
- libsnes compiles on all three platforms (no API changes to libsnes)
- memory.cpp : namespace memory removed (wram -> cpu, apuram -> smp,
vram, oam, cgram -> ppu)
- sa1.cpp : namespace memory removed (SA-1 specific functions merged
inline to SA1::bus_read,write)
- GameBoy: added serial link support with interrupts and proper 8192hz
timing, but obviously it acts as if no other GB is connected to it
- GameBoy: added STAT OAM interrupt, and better STAT d1,d0 mode values
- UI: since Qt is dead, I've renamed the config files back to bsnes.cfg
and bsnes-geometry.cfg
- SA1: IRAM was not syncing to CPU on SA-1 side
- PPU/Accuracy and PPU/Performance needed Sprite oam renamed to Sprite
sprite; so that I could add uint8 oam[544]
- makes more sense anyway, OAM = object attribute memory, obj or
sprite are better names for Sprite rendering class
- more cleanup
2011-01-24 09:03:17 +00:00
|
|
|
|
Update to v091r05 release.
[No prior releases were posted to the WIP thread. -Ed.]
byuu says:
Super Famicom mapping system has been reworked as discussed with the
mask= changes. offset becomes base, mode is gone. Also added support for
comma-separated fields in the address fields, to reduce the number of
map lines needed.
<?xml version="1.0" encoding="UTF-8"?>
<cartridge region="NTSC">
<superfx revision="2">
<rom name="program.rom" size="0x200000"/>
<ram name="save.rwm" size="0x8000"/>
<map id="io" address="00-3f,80-bf:3000-32ff"/>
<map id="rom" address="00-3f:8000-ffff" mask="0x8000"/>
<map id="rom" address="40-5f:0000-ffff"/>
<map id="ram" address="00-3f,80-bf:6000-7fff" size="0x2000"/>
<map id="ram" address="70-71:0000-ffff"/>
</superfx>
</cartridge>
Or in BML:
cartridge region=NTSC
superfx revision=2
rom name=program.rom size=0x200000
ram name=save.rwm size=0x8000
map id=io address=00-3f,80-bf:3000-32ff
map id=rom address=00-3f:8000-ffff mask=0x8000
map id=rom address=40-5f:0000-ffff
map id=ram address=00-3f,80-bf:6000-7fff size=0x2000
map id=ram address=70-71:0000-ffff
As a result of the changes, old mappings will no longer work. The above
XML example will run Super Mario World 2: Yoshi's Island. Otherwise,
you'll have to write your own.
All that's left now is to work some sort of database mapping system in,
so I can start dumping carts en masse.
The NES changes that FitzRoy asked for are mostly in as well.
Also, part of the reason I haven't released a WIP ... but fuck it, I'm
not going to wait forever to post a new WIP.
I've added a skeleton driver to emulate Campus Challenge '92 and
Powerfest '94. There's no actual emulation, except for the stuff I can
glean from looking at the pictures of the board. It has a DSP-1 (so
SR/DR registers), four ROMs that map in and out, RAM, etc.
I've also added preliminary mapping to upload high scores to a website,
but obviously I need the ROMs first.
2012-10-09 08:25:32 +00:00
|
|
|
bus.map(reader, writer, 0x00, 0x3f, 0x4200, 0x421f);
|
|
|
|
|
bus.map(reader, writer, 0x80, 0xbf, 0x4200, 0x421f);
|
Update to v074r11 release.
byuu says:
Changelog:
- debugger compiles on all three profiles
- libsnes compiles on all three platforms (no API changes to libsnes)
- memory.cpp : namespace memory removed (wram -> cpu, apuram -> smp,
vram, oam, cgram -> ppu)
- sa1.cpp : namespace memory removed (SA-1 specific functions merged
inline to SA1::bus_read,write)
- GameBoy: added serial link support with interrupts and proper 8192hz
timing, but obviously it acts as if no other GB is connected to it
- GameBoy: added STAT OAM interrupt, and better STAT d1,d0 mode values
- UI: since Qt is dead, I've renamed the config files back to bsnes.cfg
and bsnes-geometry.cfg
- SA1: IRAM was not syncing to CPU on SA-1 side
- PPU/Accuracy and PPU/Performance needed Sprite oam renamed to Sprite
sprite; so that I could add uint8 oam[544]
- makes more sense anyway, OAM = object attribute memory, obj or
sprite are better names for Sprite rendering class
- more cleanup
2011-01-24 09:03:17 +00:00
|
|
|
|
2016-03-26 01:56:15 +00:00
|
|
|
reader = {&CPU::dmaPortRead, this};
|
|
|
|
|
writer = {&CPU::dmaPortWrite, this};
|
Update to v091r05 release.
[No prior releases were posted to the WIP thread. -Ed.]
byuu says:
Super Famicom mapping system has been reworked as discussed with the
mask= changes. offset becomes base, mode is gone. Also added support for
comma-separated fields in the address fields, to reduce the number of
map lines needed.
<?xml version="1.0" encoding="UTF-8"?>
<cartridge region="NTSC">
<superfx revision="2">
<rom name="program.rom" size="0x200000"/>
<ram name="save.rwm" size="0x8000"/>
<map id="io" address="00-3f,80-bf:3000-32ff"/>
<map id="rom" address="00-3f:8000-ffff" mask="0x8000"/>
<map id="rom" address="40-5f:0000-ffff"/>
<map id="ram" address="00-3f,80-bf:6000-7fff" size="0x2000"/>
<map id="ram" address="70-71:0000-ffff"/>
</superfx>
</cartridge>
Or in BML:
cartridge region=NTSC
superfx revision=2
rom name=program.rom size=0x200000
ram name=save.rwm size=0x8000
map id=io address=00-3f,80-bf:3000-32ff
map id=rom address=00-3f:8000-ffff mask=0x8000
map id=rom address=40-5f:0000-ffff
map id=ram address=00-3f,80-bf:6000-7fff size=0x2000
map id=ram address=70-71:0000-ffff
As a result of the changes, old mappings will no longer work. The above
XML example will run Super Mario World 2: Yoshi's Island. Otherwise,
you'll have to write your own.
All that's left now is to work some sort of database mapping system in,
so I can start dumping carts en masse.
The NES changes that FitzRoy asked for are mostly in as well.
Also, part of the reason I haven't released a WIP ... but fuck it, I'm
not going to wait forever to post a new WIP.
I've added a skeleton driver to emulate Campus Challenge '92 and
Powerfest '94. There's no actual emulation, except for the stuff I can
glean from looking at the pictures of the board. It has a DSP-1 (so
SR/DR registers), four ROMs that map in and out, RAM, etc.
I've also added preliminary mapping to upload high scores to a website,
but obviously I need the ROMs first.
2012-10-09 08:25:32 +00:00
|
|
|
bus.map(reader, writer, 0x00, 0x3f, 0x4300, 0x437f);
|
|
|
|
|
bus.map(reader, writer, 0x80, 0xbf, 0x4300, 0x437f);
|
Update to v074r11 release.
byuu says:
Changelog:
- debugger compiles on all three profiles
- libsnes compiles on all three platforms (no API changes to libsnes)
- memory.cpp : namespace memory removed (wram -> cpu, apuram -> smp,
vram, oam, cgram -> ppu)
- sa1.cpp : namespace memory removed (SA-1 specific functions merged
inline to SA1::bus_read,write)
- GameBoy: added serial link support with interrupts and proper 8192hz
timing, but obviously it acts as if no other GB is connected to it
- GameBoy: added STAT OAM interrupt, and better STAT d1,d0 mode values
- UI: since Qt is dead, I've renamed the config files back to bsnes.cfg
and bsnes-geometry.cfg
- SA1: IRAM was not syncing to CPU on SA-1 side
- PPU/Accuracy and PPU/Performance needed Sprite oam renamed to Sprite
sprite; so that I could add uint8 oam[544]
- makes more sense anyway, OAM = object attribute memory, obj or
sprite are better names for Sprite rendering class
- more cleanup
2011-01-24 09:03:17 +00:00
|
|
|
|
2016-03-26 01:56:15 +00:00
|
|
|
reader = [](uint24 addr, uint8) -> uint8 { return cpu.wram[addr]; };
|
|
|
|
|
writer = [](uint24 addr, uint8 data) -> void { cpu.wram[addr] = data; };
|
Update to v091r05 release.
[No prior releases were posted to the WIP thread. -Ed.]
byuu says:
Super Famicom mapping system has been reworked as discussed with the
mask= changes. offset becomes base, mode is gone. Also added support for
comma-separated fields in the address fields, to reduce the number of
map lines needed.
<?xml version="1.0" encoding="UTF-8"?>
<cartridge region="NTSC">
<superfx revision="2">
<rom name="program.rom" size="0x200000"/>
<ram name="save.rwm" size="0x8000"/>
<map id="io" address="00-3f,80-bf:3000-32ff"/>
<map id="rom" address="00-3f:8000-ffff" mask="0x8000"/>
<map id="rom" address="40-5f:0000-ffff"/>
<map id="ram" address="00-3f,80-bf:6000-7fff" size="0x2000"/>
<map id="ram" address="70-71:0000-ffff"/>
</superfx>
</cartridge>
Or in BML:
cartridge region=NTSC
superfx revision=2
rom name=program.rom size=0x200000
ram name=save.rwm size=0x8000
map id=io address=00-3f,80-bf:3000-32ff
map id=rom address=00-3f:8000-ffff mask=0x8000
map id=rom address=40-5f:0000-ffff
map id=ram address=00-3f,80-bf:6000-7fff size=0x2000
map id=ram address=70-71:0000-ffff
As a result of the changes, old mappings will no longer work. The above
XML example will run Super Mario World 2: Yoshi's Island. Otherwise,
you'll have to write your own.
All that's left now is to work some sort of database mapping system in,
so I can start dumping carts en masse.
The NES changes that FitzRoy asked for are mostly in as well.
Also, part of the reason I haven't released a WIP ... but fuck it, I'm
not going to wait forever to post a new WIP.
I've added a skeleton driver to emulate Campus Challenge '92 and
Powerfest '94. There's no actual emulation, except for the stuff I can
glean from looking at the pictures of the board. It has a DSP-1 (so
SR/DR registers), four ROMs that map in and out, RAM, etc.
I've also added preliminary mapping to upload high scores to a website,
but obviously I need the ROMs first.
2012-10-09 08:25:32 +00:00
|
|
|
bus.map(reader, writer, 0x00, 0x3f, 0x0000, 0x1fff, 0x002000);
|
|
|
|
|
bus.map(reader, writer, 0x80, 0xbf, 0x0000, 0x1fff, 0x002000);
|
|
|
|
|
bus.map(reader, writer, 0x7e, 0x7f, 0x0000, 0xffff, 0x020000);
|
Update to v074r10 release.
byuu says:
Major WIP, countless changes. I really went to town on cleaning up the
source today with all kinds of new ideas. I'll post the ones I remember,
use diff -ru to get the rest.
What I like the most is my new within template:
template<unsigned lo, unsigned hi>
alwaysinline bool within(unsigned addr) {
static const unsigned mask = ~(hi ^ lo);
return (addr & mask) == lo;
}
Before, you would see code like this:
if((addr & 0xe0e000) == 0x206000) { //$20-3f:6000-7fff
The comment is basically necessary, and you have to trust that the mask
is right, or do the math yourself.
Now, it looks like this:
if(within<0x20, 0x3f, 0x6000, 0x7fff>(addr)) {
That's the same as within<0x206000, 0x3f7fff>, I just made an
SNES-variant to more closely simulate my XML mapping style:
20-3f:6000-7fff.
Now obviously this has limitations, it only works in base-2 and it can't
manage some tricky edge cases like (addr & 0x408000) == 0x008000 for
00-3f|80-bf:8000-ffff. But for the most part, I'll be using this where
I can. The Game Boy is fully ported over to it (via the MBCs), but the
SNES only has the BS-X town cartridge moved over so far. SuperFX and
SA-1 at the very least could benefit.
Next up, since the memory map is now static, there's really no reason to
remap the entire thing at power-on and reset. So it is now set up at
cartridge load and that's it. I moved the CPU/PPU/WRAM mapping out of
memory.cpp and into their respective processors. A bit of duplication
only because there are multiple processor cores for the different
profiles, but I'm not worried about that. This is also going to be
necessary to fix the debugger.
Next, Coprocessor::enable() actually does what I initially intended it
to now: it is called once to turn a chip on after cartridge load. It's
not called on power cycle anymore. This should help fix power-cycle on
my serial simulation code, and was needed to map the bus exactly one
time. Although most stuff is mapped through XML, some chips still need
some manual hooks for monitoring and such (eg S-DD1.)
Next, I've started killing off memory::, it was initially an
over-reaction to the question of where to put APURAM (in the SMP or
DSP?). The idea was to have this namespace that contained all memory for
everything. But it was very annoying and tedious, and various chips
ignored the convention anyway like ST-0011 RAM, which couldn't work
anyway since it is natively uint16 and not uint8. Cx4 will need 24-bit
RAM eventually, too. There's 8->24-bit functions in there now, because
the HLE code is hideous.
So far, all the cartridge.cpp memory:: types have been destroyed.
memory::cartrom, memory::cartram become cartridge.rom and cartridge.ram.
memory::cartrtc was moved into the SRTC and SPC7110 classes directly.
memory::bsxflash was moved into BSXFlash. memory::bsxram and
memory::bsxpram were moved into BSXCartridge (the town cartridge).
memory::st[AB](rom|ram) were moved into a new area,
snes/chip/sufamiturbo. The snes/chip moniker really doesn't work so
well, since it also has base units, and the serial communications stuff
which is through the controller port, but oh well, now it also has the
base structure for the Sufami Turbo cartridge too. So now we have
sufamiturbo.slotA.rom, sufamiturbo.slotB.ram, etc.
Next, the ST-0010/ST-0011 actually save the data RAM to disk. This
wasn't at all compatible with my old system, and I didn't want to keep
adding memory types to check inside the main UI cartridge RAM loading
and saving routines.
So I built a NonVolatileRAM vector inside SNES::Cartridge, and any chip
that has memory it wants to save and load from disk can append onto it
: data, size, id ("srm", "rtc", "nec", etc) and slot (0 = cartridge,
1 = slot A, 2 = slot B)
To load and save memory, we just do a simple: foreach(memory,
SNES::cartridge.nvram) load/saveMemory(memory).
As a result, you can now keep your save games in F1 Race of Champions II
and Hayazashi Nidan Morita Shougi. Technically I think Metal Combat
should work this way as well, having the RAM being part of the chip
itself, but for now that chip just writes directly into cartridge.ram,
so it also technically saves to disk for now.
To avoid a potential conflict with a manipulated memory map, BS-X SRAM
and PSRAM are now .bss and .bsp, and not .srm and .psr. Honestly I don't
like .srm as an extension either, but it doesn't bother me enough to
break save RAM compatibility with other emulators, so don't worry about
that changing.
I finally killed off MappedRAM initializing size to ~0 (-1U). A size of
zero means there is no memory there just the same. This was an old
holdover for handling MMIO mapping, if I recall correctly. Something
about a size of zero on MMIO-Memory objects causing it to wrap the
address, so ~0 would let it map direct addresses ... or something.
Whatever, that's not needed at all anymore.
BSXBase becomes BSXSatellaview, and I've defaulted the device to being
attached since it won't affect non-BSX games anyway. Eventually the GUI
needs to make that an option. BSXCart becomes BSXCartridge. BSXFlash
remains unchanged.
I probably need to make Coprocessor::disable() functions now to free up
memory on unload, but it shouldn't hurt anything the way it is.
libsnes is most definitely broken to all hell and back now, and the
debugger is still shot. I suppose we'll need some tricky code to work
with the old ID system, and we'll need to add some more IDs for the new
memory types.
2011-01-24 08:59:45 +00:00
|
|
|
}
|
|
|
|
|
|
Update to v095r05 release.
byuu says:
Changelog:
- GBA: lots of emulation improvements
- PPU PRAM is 16-bits wide
- DMA masks &~1/Half, &~3/Word
- VRAM OBJ 8-bit writes are ignored
- OAM 8-bit writes are ignored
- BGnCNT unused bits are writable*
- BG(0,1)CNT can't set the d13
- BLDALPHA is readable (fixes Donkey Kong Country, etc)
- SNES: lots of code cleanups
- sfc/chip => sfc/coprocessor
- UI: save most recent controller selection
GBA test scores: 1552/1552, 37/38, 1020/1260
(* forgot to add the value to the read function, so endrift's I/O tests
for them will fail. Fixed locally.)
Note: SNES is the only system with multiple controller/expansion port
options, and as such is the only one with a "None" option. Because it's
shared by the controller and expansion port, it ends up sorted first in
the list. This means that on your first run, you'll need to go to Super
Famicom->Controller Port 1 and select "Gamepad", otherwise input won't
work.
Also note that changing the expansion port device requires loading a new
cart. Unlike controllers, you aren't meant to hotplug expansion port
devices.
2015-11-12 10:15:03 +00:00
|
|
|
auto CPU::power() -> void {
|
Update to v093r02 release.
byuu says:
Changelog:
- nall: fixed major memory leak in string class
- ruby: video shaders support #define-based settings now
- phoenix/GTK+: support > 256x256 icons for window / task bar / alt-tab
- sfc: remove random/ and config/, merge into system/
- ethos: delete higan.png (48x48), replace with higan512.png (512x512)
as new higan.png
- ethos: default gamma to 100% (no color adjustment)
- ethos: use "Video Shaders/Display Emulation/" instead of "Video
Shaders/Emulation/"
- use g++ instead of g++-4.7 (g++ -v must be >= 4.7)
- use -std=c++11 instead of -std=gnu++11
- applied a few patches from Debian upstream to make their packaging job
easier
So because colors are normalized in GLSL, I won't be able to offer video
shaders absolute color literals. We will have to perform basic color
conversion inside the core.
As such, the current plan is to create some sort of Emulator::Settings
interface. With that, I'll connect an option for color correction, which
will be on by default. For FC/SFC, that will mean gamma correction
(darker / stronger colors), and for GB/GBC/GBA, it will mean simulating
the weird brightness levels of the displays. I am undecided on whether
to use pea soup green for the GB or not. By not doing so, it'll be
easier for the display emulation shader to do it.
2013-11-09 11:45:54 +00:00
|
|
|
for(auto& byte : wram) byte = random(0x55);
|
2010-08-09 13:28:56 +00:00
|
|
|
|
2016-03-26 01:56:15 +00:00
|
|
|
//CPU
|
2010-08-09 13:28:56 +00:00
|
|
|
regs.a = regs.x = regs.y = 0x0000;
|
|
|
|
|
regs.s = 0x01ff;
|
|
|
|
|
|
2016-03-26 01:56:15 +00:00
|
|
|
//DMA
|
|
|
|
|
for(auto& channel : this->channel) {
|
|
|
|
|
channel.direction = 1;
|
|
|
|
|
channel.indirect = true;
|
|
|
|
|
channel.unused = true;
|
|
|
|
|
channel.reverse_transfer = true;
|
|
|
|
|
channel.fixed_transfer = true;
|
|
|
|
|
channel.transfer_mode = 7;
|
|
|
|
|
|
|
|
|
|
channel.dest_addr = 0xff;
|
|
|
|
|
|
|
|
|
|
channel.source_addr = 0xffff;
|
|
|
|
|
channel.source_bank = 0xff;
|
|
|
|
|
|
|
|
|
|
channel.transfer_size = 0xffff;
|
|
|
|
|
channel.indirect_bank = 0xff;
|
|
|
|
|
|
|
|
|
|
channel.hdma_addr = 0xffff;
|
|
|
|
|
channel.line_counter = 0xff;
|
|
|
|
|
channel.unknown = 0xff;
|
|
|
|
|
}
|
Update to v097r32 release.
byuu says:
Changelog:
- bsnes-accuracy emulates reset vector properly[1]
- bsnes-balanced compiles once more
- bsnes-performance compiles once more
The balanced and performance profiles are fixed for the last time. They
will be removed for v098r01.
Please test this WIP as much as you can. I intend to release v098 soon.
I know save states are a little unstable for the WS/WSC, but they work
well enough for a release. If I can't figure it out soon, I'm going to
post v098 anyway.
[1] this one's been a really long time coming, but ... one of the bugs
I found when I translated Tekkaman Blade was that my translation patch
would crash every now and again when you hit the reset button on a real
SNES, but it always worked upon power on.
Turns out that while power-on initializes the stack register to $01ff,
reset does things a little bit differently. Reset actually triggers the
reset interrupt vector after putting the CPU into emulation mode, but it
doesn't initialize the stack pointer. The net effect is that the stack
high byte is set to $01, and the low byte is left as it was. And then
the reset vector runs, which pushes the low 16-bits of the program
counter, plus the processor flags, onto the stack frame. So you can
actually tell where the game was at when the system was reset ... sort
of.
It's a really weird behavior to be sure. But here's the catch: say
you're hacking a game, and so you hook the reset vector with jsl
showMyTranslationCreditsSplashScreen, and inside this new subroutine,
you then perform whatever bytes you hijacked, and then initialize the
stack frame to go about your business drawing the screen, and when
you're done, you return via rtl.
Generally, this works fine. But if S={0100, 0101, or 0102}, then the
stack will wrap due to being in emulation mode at reset. So it will
write to {0100, 01ff, 01fe}. But now in your subroutine, you enable
native mode. So when you return from your subroutine hijack, it reads
the return address from {01ff, 0200, 0201} instead of the expected
{01ff, 0100, 0101}. Thus, you get an invalid address back, and you
"return" to the wrong location, and your program dies.
The odds of this happening depend on how the game handles S, but
generally speaking, it's a ~1:85 chance.
By emulating this behavior, I'll likely expose this bug in many ROM
hacks that do splash screen hooks like this, including my own Tekkaman
Blade translation. And it's also very possible that there are commercial
games that screw this up as well.
But, it's what the real system does. So if any crashes start happening
as of this WIP upon resetting the game, well ... it'd happen on real
hardware, too.
2016-04-03 11:17:20 +00:00
|
|
|
|
|
|
|
|
status.power_pending = true;
|
|
|
|
|
status.interrupt_pending = true;
|
2010-08-09 13:28:56 +00:00
|
|
|
}
|
|
|
|
|
|
Update to v095r05 release.
byuu says:
Changelog:
- GBA: lots of emulation improvements
- PPU PRAM is 16-bits wide
- DMA masks &~1/Half, &~3/Word
- VRAM OBJ 8-bit writes are ignored
- OAM 8-bit writes are ignored
- BGnCNT unused bits are writable*
- BG(0,1)CNT can't set the d13
- BLDALPHA is readable (fixes Donkey Kong Country, etc)
- SNES: lots of code cleanups
- sfc/chip => sfc/coprocessor
- UI: save most recent controller selection
GBA test scores: 1552/1552, 37/38, 1020/1260
(* forgot to add the value to the read function, so endrift's I/O tests
for them will fail. Fixed locally.)
Note: SNES is the only system with multiple controller/expansion port
options, and as such is the only one with a "None" option. Because it's
shared by the controller and expansion port, it ends up sorted first in
the list. This means that on your first run, you'll need to go to Super
Famicom->Controller Port 1 and select "Gamepad", otherwise input won't
work.
Also note that changing the expansion port device requires loading a new
cart. Unlike controllers, you aren't meant to hotplug expansion port
devices.
2015-11-12 10:15:03 +00:00
|
|
|
auto CPU::reset() -> void {
|
2015-11-10 11:02:29 +00:00
|
|
|
create(Enter, system.cpuFrequency());
|
2010-08-09 13:28:56 +00:00
|
|
|
coprocessors.reset();
|
2010-08-09 13:33:44 +00:00
|
|
|
PPUcounter::reset();
|
2010-08-09 13:28:56 +00:00
|
|
|
|
2016-03-26 01:56:15 +00:00
|
|
|
//CPU
|
2011-09-27 11:55:02 +00:00
|
|
|
regs.pc = 0x000000;
|
|
|
|
|
regs.x.h = 0x00;
|
|
|
|
|
regs.y.h = 0x00;
|
|
|
|
|
regs.s.h = 0x01;
|
|
|
|
|
regs.d = 0x0000;
|
|
|
|
|
regs.db = 0x00;
|
|
|
|
|
regs.p = 0x34;
|
|
|
|
|
regs.e = 1;
|
|
|
|
|
regs.mdr = 0x00;
|
|
|
|
|
regs.wai = false;
|
|
|
|
|
regs.vector = 0xfffc; //reset vector address
|
2010-08-09 13:28:56 +00:00
|
|
|
|
2016-03-26 01:56:15 +00:00
|
|
|
//$2140-217f
|
|
|
|
|
for(auto& port : status.port) port = 0x00;
|
|
|
|
|
|
|
|
|
|
//$2181-$2183
|
|
|
|
|
status.wram_addr = 0x000000;
|
|
|
|
|
|
|
|
|
|
//$4016-$4017
|
|
|
|
|
status.joypad_strobe_latch = 0;
|
|
|
|
|
status.joypad1_bits = ~0;
|
|
|
|
|
status.joypad2_bits = ~0;
|
|
|
|
|
|
|
|
|
|
//$4200
|
|
|
|
|
status.nmi_enabled = false;
|
|
|
|
|
status.hirq_enabled = false;
|
|
|
|
|
status.virq_enabled = false;
|
|
|
|
|
status.auto_joypad_poll = false;
|
|
|
|
|
|
|
|
|
|
//$4201
|
|
|
|
|
status.pio = 0xff;
|
|
|
|
|
|
|
|
|
|
//$4202-$4203
|
|
|
|
|
status.wrmpya = 0xff;
|
|
|
|
|
status.wrmpyb = 0xff;
|
|
|
|
|
|
|
|
|
|
//$4204-$4206
|
|
|
|
|
status.wrdiva = 0xffff;
|
|
|
|
|
status.wrdivb = 0xff;
|
|
|
|
|
|
|
|
|
|
//$4207-$420a
|
|
|
|
|
status.hirq_pos = 0x01ff;
|
|
|
|
|
status.virq_pos = 0x01ff;
|
|
|
|
|
|
|
|
|
|
//$420d
|
|
|
|
|
status.rom_speed = 8;
|
|
|
|
|
|
|
|
|
|
//$4214-$4217
|
|
|
|
|
status.rddiv = 0x0000;
|
|
|
|
|
status.rdmpy = 0x0000;
|
|
|
|
|
|
|
|
|
|
//$4218-$421f
|
|
|
|
|
status.joy1 = 0x0000;
|
|
|
|
|
status.joy2 = 0x0000;
|
|
|
|
|
status.joy3 = 0x0000;
|
|
|
|
|
status.joy4 = 0x0000;
|
|
|
|
|
|
|
|
|
|
//ALU
|
|
|
|
|
alu.mpyctr = 0;
|
|
|
|
|
alu.divctr = 0;
|
|
|
|
|
alu.shift = 0;
|
|
|
|
|
|
|
|
|
|
//DMA
|
|
|
|
|
for(auto& channel : this->channel) {
|
|
|
|
|
channel.dma_enabled = false;
|
|
|
|
|
channel.hdma_enabled = false;
|
|
|
|
|
|
|
|
|
|
channel.hdma_completed = false;
|
|
|
|
|
channel.hdma_do_transfer = false;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
pipe.valid = false;
|
|
|
|
|
pipe.addr = 0;
|
|
|
|
|
pipe.data = 0;
|
|
|
|
|
|
|
|
|
|
//Timing
|
|
|
|
|
status.clock_count = 0;
|
|
|
|
|
status.line_clocks = lineclocks();
|
|
|
|
|
|
|
|
|
|
status.irq_lock = false;
|
|
|
|
|
status.dram_refresh_position = (cpu_version == 1 ? 530 : 538);
|
|
|
|
|
status.dram_refreshed = false;
|
|
|
|
|
|
|
|
|
|
status.hdma_init_position = (cpu_version == 1 ? 12 + 8 - dmaCounter() : 12 + dmaCounter());
|
|
|
|
|
status.hdma_init_triggered = false;
|
|
|
|
|
|
|
|
|
|
status.hdma_position = 1104;
|
|
|
|
|
status.hdma_triggered = false;
|
|
|
|
|
|
|
|
|
|
status.nmi_valid = false;
|
|
|
|
|
status.nmi_line = false;
|
|
|
|
|
status.nmi_transition = false;
|
|
|
|
|
status.nmi_pending = false;
|
|
|
|
|
status.nmi_hold = false;
|
|
|
|
|
|
|
|
|
|
status.irq_valid = false;
|
|
|
|
|
status.irq_line = false;
|
|
|
|
|
status.irq_transition = false;
|
|
|
|
|
status.irq_pending = false;
|
|
|
|
|
status.irq_hold = false;
|
|
|
|
|
|
Update to v097r32 release.
byuu says:
Changelog:
- bsnes-accuracy emulates reset vector properly[1]
- bsnes-balanced compiles once more
- bsnes-performance compiles once more
The balanced and performance profiles are fixed for the last time. They
will be removed for v098r01.
Please test this WIP as much as you can. I intend to release v098 soon.
I know save states are a little unstable for the WS/WSC, but they work
well enough for a release. If I can't figure it out soon, I'm going to
post v098 anyway.
[1] this one's been a really long time coming, but ... one of the bugs
I found when I translated Tekkaman Blade was that my translation patch
would crash every now and again when you hit the reset button on a real
SNES, but it always worked upon power on.
Turns out that while power-on initializes the stack register to $01ff,
reset does things a little bit differently. Reset actually triggers the
reset interrupt vector after putting the CPU into emulation mode, but it
doesn't initialize the stack pointer. The net effect is that the stack
high byte is set to $01, and the low byte is left as it was. And then
the reset vector runs, which pushes the low 16-bits of the program
counter, plus the processor flags, onto the stack frame. So you can
actually tell where the game was at when the system was reset ... sort
of.
It's a really weird behavior to be sure. But here's the catch: say
you're hacking a game, and so you hook the reset vector with jsl
showMyTranslationCreditsSplashScreen, and inside this new subroutine,
you then perform whatever bytes you hijacked, and then initialize the
stack frame to go about your business drawing the screen, and when
you're done, you return via rtl.
Generally, this works fine. But if S={0100, 0101, or 0102}, then the
stack will wrap due to being in emulation mode at reset. So it will
write to {0100, 01ff, 01fe}. But now in your subroutine, you enable
native mode. So when you return from your subroutine hijack, it reads
the return address from {01ff, 0200, 0201} instead of the expected
{01ff, 0100, 0101}. Thus, you get an invalid address back, and you
"return" to the wrong location, and your program dies.
The odds of this happening depend on how the game handles S, but
generally speaking, it's a ~1:85 chance.
By emulating this behavior, I'll likely expose this bug in many ROM
hacks that do splash screen hooks like this, including my own Tekkaman
Blade translation. And it's also very possible that there are commercial
games that screw this up as well.
But, it's what the real system does. So if any crashes start happening
as of this WIP upon resetting the game, well ... it'd happen on real
hardware, too.
2016-04-03 11:17:20 +00:00
|
|
|
status.reset_pending = !status.power_pending;
|
2016-03-26 01:56:15 +00:00
|
|
|
status.interrupt_pending = true;
|
|
|
|
|
|
|
|
|
|
status.dma_active = false;
|
|
|
|
|
status.dma_counter = 0;
|
|
|
|
|
status.dma_clocks = 0;
|
|
|
|
|
status.dma_pending = false;
|
|
|
|
|
status.hdma_pending = false;
|
|
|
|
|
status.hdma_mode = 0;
|
|
|
|
|
|
|
|
|
|
status.auto_joypad_active = false;
|
|
|
|
|
status.auto_joypad_latch = false;
|
|
|
|
|
status.auto_joypad_counter = 0;
|
|
|
|
|
status.auto_joypad_clock = 0;
|
2010-08-09 13:28:56 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
}
|