byuu says:
This release refines HSU1 support as a bidirectional protocol, nests SFC
manifests as "release/cartridge" and "release/information" (but release/
is not guaranteed to be finalized just yet), removes the database
integration, and adds support for ananke.
ananke represents inevitability. It's a library that, when installed,
higan can use to load files from the command-line, and also from a new
File -> Load Game menu option.
I need to change the build rules a bit for it to work on Windows (need
to make phoenix a DLL, basically), but it works now on Linux.
Right now, it only takes *.sfc file names, looks them up in the included
database, converts them to game folders, and returns the game folder
path for higan to load.
The idea is to continue expanding it to support everything we can that
I don't want in the higan core:
- load *.sfc, *.smc, *.swc, *.fig files
- remove SNES copier headers
- split apart merged firmware files
- pull in external firmware files (eg dsp1b.rom - these are staying
merged, just as SPC7110 prg+dat are merged)
- load *.zip and *.7z archives
- prompt for selection on multi-file archives
- generate manifest files based on heuristics
- apply BPS patches
The "Load" menu option has been renamed to "Library", to represent games
in your library. I'm going to add some sort of suffix to indicate
unverified games, and use a different folder icon for those (eg
manifests built on heuristics rather than from the database.)
So basically, to future end users:
File -> Load Game will be how they play games.
Library -> (specific system) can be thought of as an infinitely-sized
recent games list.
purify will likely become a simple stub that invokes ananke's functions.
No reason to duplicate all that code.
[r07 and r08 were not posted to the WIP thread. -Ed.]
byuu says:
I'd appreciate it if you guys wouldn't mind testing out the database
functionality.
Save this file as database.bml (remove the date) inside
~/.config/higan/Super Famicom.sfc/ or %APPDATA%/higan/Super Famicom.sfc/
http://byuu.org/snes/database/database_2012-10-21.bml
Now load any of the 20 games in the database from the file dialog. They
need to be named *.sfc, have no copier header, and have firmware
appended (for Mario Kart only so far.)
If anyone actually does test it, please let me know how it goes for you
and what you think. Note that future versions of higan will have the
database.bml file included with the release.
byuu says:
This release adds initial database support.
The way it works is you can now load game folders as you always have, or
you can load a game file. If you load a game file, it tries to create
a game folder for you by looking up the file's sha256 in a database. If
it can't find it, sorry, the game won't play. I'm not hooking up the
oldschool "make up a manifest" code here. The easiest way to handle this
is to get me every game so I can dump it and add it to the database :D
The database entries are complete entries that can be copied directly.
So it describes the board, the information, file layout, etc. That'll be
what comes with higan releases in the future.
Internally, I'm separating the information and board descriptions, and
will use a tool to merge the two together.
Here's a current database copy, with one game in it. Still hammering out
some details, but it's mostly how it's going to look.
cartridge region=NTSC
board type=1CB5B-20
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
information
name: Super Mario World 2 - Yoshi's Island (SNS) (1.1)
title: Super Mario World 2: Yoshi's Island
sha256: bd763c1a56365c244be92e6cffefd318780a2a19eda7d5baf1c6d5bd6c1b3e06
board: SHVC-1CB5B-20
rom: 0x200000
ram: 0x8000
layout
file name=program.rom size=0x200000
[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.
byuu says:
Basically just a project rename, with s/bsnes/higan and the new icon
from lowkee added in.
It won't compile on Windows because I forgot to update the resource.rc
file, and a path transform command isn't working on Windows.
It was really just meant as a starting point, so that v091 WIPs can flow
starting from .00 with the new name (it overshadows bsnes v091, so
publicly speaking this "shouldn't exist" and will probably be deleted
from Google Code when v092 is ready.)
byuu says:
A few issues crept up in the last release, this should take care of
them.
First, it seems that the 32-bit runtime on 64-bit versions of Windows
have 64-bit time functions; whereas true 32-bit Windows does not. This
was causing a DLL error when attempting to load bsnes v090.
Second, when there were more than 2,000 files in the same folder on
Windows, it was lagging the file browser. With OV2's help, I've fixed
that and it'll now load the list instantly.
Lastly, I've included the missing video shaders this time.
byuu says:
Most notably, this release adds Nintendo DS emulation. The Nintendo DS
module was written entirely by Cydrak, so please give him all of the
credit for it. I for one am extremely grateful to be allowed to use his
module in bsnes.
The Nintendo DS emulator's standalone name is dasShiny. You will need
the Nintendo DS firmware, which I cannot provide, in order to use it. It
also cannot (currently?) detect the save type used by NDS games. As
such, manifest.xml files must be created manually for this purpose. The
long-term plan is to create a database of save types for each game.
Also, you will need an analog input device for the touch screen for now
(joypad axes work well.)
There have also been a lot of changes from my end: a unified
manifest.xml format across all systems, major improvements to SPC7110
emulation, enhancements to RTC emulation, MSU1 enhancements, icons in
the file browser list, improvements to SNES coprocessor memory mapping,
cleanups and improvements in the libraries used to build bsnes, etc.
I've also included kaijuu (which allows launching game folders directly
with bsnes) and purify (which allows opening images that are compressed,
have copier headers, and have wrong extensions); both of which are fully
GUI-based.
This release only loads game folders, not files. Use purify to load ROM
files in bsnes.
Note that this will likely be the last release for a long time, and that
I will probably rename the emulator for the next release, due to how
many additional systems it now supports.
byuu says:
Changelog:
- fixed bsnes to let config files and system folders to be in the same
folder as the executable
- fixed RawInput driver to compile again without linear_vector
- fixed phoenix/Windows to compile again without linear_vector
- fixed old vs new name warnings on MinGW w64 (technically the warnings
were erroneous, but I worked around them anyway)
- added memory export hotkey (SNES driver only; mainly for FEoEZ
translation)
- restored WRAM randomization for v090 stability (we can discuss that
idea for v091+)
- fixed SuperFX / SA-1 "0x" prefix in the header generation (drop it
into the latest purify if you want)
- added nall/Makefile uname support for UnxUtils (was breaking
compilation with full UnxUtils in your path otherwise)
byuu says:
This update uses the latest manifest.xml mappings. It also adds a new
"Update Manifests" button that can be used to quickly regenerate all
manifests (sans Famicom games ... since I strip the iNES header, that
information is gone. We can't support Famicom manifest.xml updates until
we have a database.) This is different than the before wrapping of the
functionality on the convert games button. You can also trigger this on
the command-line with "purify synchronize"
g6672D, great catch. This was fixed, thank you.
[g6672D's bug was: "SA-1 and SuperFX are missing the "0x" for
program.rom/save.rwm size." - Ed.]
byuu says:
This implements the spec from the XML part 3 thread:
http://board.byuu.org/viewtopic.php?f=16&t=2998
It's also propagated the changes to nall and purify, so you can test
this one.
This is basically it, after years of effort I feel I finally have
a fully consistent and logical XML board format.
The only things left to change will be: modifications if emulation turns
out to be incorrect (eg we missed some MMIO mirrors, or mirrored too
much), and new additions.
And of course, I'm giving it a bit of time for good arguments against
the format.
Other than that, this release removes linear_vector and pointer_vector,
as vector is better than linear_vector and I've never used
pointer_vector.
vector also gets move(), which is a way to use move-semantics across
types. It lets you steal the underlying memory pool, effectively
destroying the vector without a copy.
This works really nicely with the move for read() functions to return
vector<uint8> instead of taking (uint8_t*&, unsigned&) parameters.
byuu says:
Changelog:
- eliminated <mmio>, <mcu> tags [they are merged to their parent nodes
now]
- added <ram name= size=> tag to EpsonRTC, SharpRTC
- added <firmware> tag to DSP-n, ST-01n, ST-018, Cx4
- interface->path(0) now returns the system folder, which can be used
for storage now
- as a fun proof-of-concept, I've simulated SNES warm power cycles by
saving and loading work RAM (same effect if you instantly swapped
carts)
- long-term, I'm not sure how I want to do this. The power menu option
makes no sense with warm RAM
- I like the idea of decaying RAM based on timestamp from last play;
and power can just force the timestamp to 0 (which will corrupt all
RAM)
- Interface::firmware is gone. The cores now load firmware inside their
boot up routines
- you now get a message on the screen if the emulator can't find
firmware, should help with "I just get a black screen" messages
I'd like to start preparing for a v090 release. I think we're almost
there now. Have to update nall/cartridge and purify to handle XML
changes first.
byuu says:
Changelog:
- SuperFX has its own ROM and RAM
- Cx4 has its own ROM
- SPC7110 has its own ProgramROM, DataROM and RAM
- OBC1 has its own RAM
- BsxCartridge has its own ROM, RAM and PSRAM
- mapping changes to accommodate the above
byuu says:
Changelog:
- NSS emulation improvement (DIP is 8-bits, not 16-bits; can be remapped
via XML now like all the other chips)
- SA-1 memory map improvements (IRAM and BWRAM can be saved; ROM, IRAM
and BWRAM are separate from Cartridge::ROM, RAM; no MCU)
- S-DD1 memory map improvements (ROM, RAM inside mapping; no MCU)
- SPC7110 memory map improvements (ROM, RAM inside mapping; no MCU; not
finished yet [have to handle 8mbit expansion somehow now)
I have tried multiple times now to get the SuperFX core to use internal
ROM and RAM (separate from Cartridge::ROM, RAM) to no avail.
Not sure what the hell is going on there. Trace logs of 430MB are not
enticing ...
So right now: SuperFX, SPC7110 and BS-X cheat by mapping stuff to
Cartridge::ROM, RAM still. They need to not do that.
[also, replace the old purify tool with the new tool by the same name.
There were some previous releases outside the WIP thread, but this is
the first one that actually works with a WIP release. -Ed.]
byuu says:
Fixes up loading issues with recent purify changes, and purify also
works on BS/ST file types now and should be a bit more crash-resistant.
byuu says:
Changelog:
- Game Boy XML uses <cartridge><board type="MBC3"/> instead of
<cartridge mapper="MBC3">
- if you run bsnes with a filename argument, it will invoke "purify
filename" and exit immediately
- this chains: purify will turn the file into a game folder, and then
invoke bsnes with the game folder name
- net result: you can drag a ZIP file onto bsnes or associate SMC
headered ROMs with bsnes and they'll just work
- new nall: unified usage of - vs _ vs nothing on filenames; fancier
lstring; fancier image (constructor for creating from filename or from
memory); etc
- new phoenix: images in ListView, GTK+ merges the check box into the
first column like the other targets do, etc
- browser list now uses icons to differentiate system folders from game
folders (the game folder icon sucks, I'm open to suggestions though,
as long as it's available on Debian Squeeze in /usr/share/icons, no
custom stuff please)
byuu says:
Changelog:
- SPC7110 $480b (and its settings in $4805-6 + $4807) is now fully
emulated
- decompressor restructured and commented accordingly
The final parts remaining for the SPC7110 core, all within the
decompression engine:
- need to detect when 15+ input bytes are read for one output byte and
simulate a crash somehow (don't have to perfectly simulate corrupted
data stream)
- need to emulate time required to decompress data (doesn't have to be
perfect, just something other than instantaneous)
- need to determine what $480c status flags d6-d0 are for, as best we
can anyway
byuu says:
Changelog:
- Cydrak merged all three SPC7110 decompression routines into one, cuts
the size in half
- fixed masking of $4803.d7 and $4813.d7
- data port out of bounds accesses emulated correctly for app SPC7110
boards
- all(?) data port $4810 reload cases now supported
- basic timing for $4805-6 seeking; reworked delay timing to work better
as well
- fixed $480c.d7 flag (1 = ready, not busy)
- AbsoluteInput returns -32768 if presentation window lacks focus and
you don't always allow input
byuu says:
Changelog:
- SPC7110 data port emulation greatly improved
- SPC7110 $480b.d1 emulated (but $4805-4806 does not work right for mode
2 decompression yet)
- MSU1 audio output will be muted when the S-DSP FLG ($6c).d6 (mute)
flag is set
- MSU1 will read filenames from manifest now (defaults to msu1.rom and
track-#.pcm if missing ... for now)
- bugfixes with MSU1 load state and track seek (and $4804 was wrapping
into $4805 to change the track#)
- Link coprocessor removed (it was meant for ST018 HLE, which never
happened)
Notes for things I forgot but need to address:
- $4813 needs to be uint7 for the set_data_offset() to not allow reading
A23 as set ever (or we can mask)
- AbsoluteInput when window doesn't have focus should return -32768, not
0
- need to support input ID lists that aren't linear (0-7), but arbitrary
(0,1,6,7 or whatever)
byuu says:
Changelog:
- Super Game Boy, BS-X Satellaview and Sufami Turbo cartridges all load
manifests that specify their file names, and they all work
- Sufami Turbo can now properly handle carts without RAM, or empty slots
entirely
- Emulator::Interface structures no longer specify any file names, ever
- exposed "capability.(cheats,states)" now. So far, this just means the
GBA doesn't show the cheat editor, since it doesn't support cheat
codes yet
- as such, state manager and cheat editor windows auto-hide (may be
a tiny bit inconvenient, but it makes not having to sync them or deal
with input when no cart is loaded easier)
- added "AbsoluteInput" type, which returns mouse coordinates from
-32767,-32767 (top left) to +32767,+32767 (bottom right) or
-32768,-32768 (offscreen)
AbsoluteInput is just something I'm toying with. Idea is to support eg
Super Scope or Justifier, or possibly some future Famicom controllers
that are absolute-indexed. The coordinates are scaled, so the bigger
your window, the more precise they are. But obviously you can't get more
precise than the emulated system, so 1x scale will behave the same
anyway. I haven't hooked it up yet, need to mess with the idea of custom
cursors via phoenix for that first. Also not sure if it will feel
smoother or not ... if you resize the window, your mouse will seem to
move slower. Still, not having to capture the mouse for SS/JS may be
nicer yet. But we'll see ... just experimenting for now.
byuu says:
Not even purify makes compatible images for this WIP.
Unless you want to figure it out yourself, I'd suggest waiting for an
updated tool before using subsequent WIPs.
Changelog:
- MSU1 initializes data port + audio track to 0
- MSU1 implements audio track error flag on $2000.d3
- manifest.xml now controls file names for cartridge folders ... mostly
Regressions:
- Super Game Boy support is broken
- Sufami Turbo support is broken
So, basically Emulator::Interface() now has:
void load(const string &manifest);
void save();
The first one will analyze the manifest, and call all the ROM + RAM
loadRequest() commands necessary to run the game.
The second one will call saveRequest() commands on all writable and
non-volatile storage (basically if it's a RAM type and has a filename
specified, it gets saved to disk.)
save() shrinks the size of Emulator::Interface() by hiding information
one is unlikely to care about. It also makes it much easier to save.
The core auto-calls this when you unload a game as well. So the only
time you ever have to worry about it is if you want to save RAM files
mid-game (in case you want to do periodic backups in case of a crash.)
[Yes, the release number is re-used. -Ed.]
byuu says:
I had some bugs in r07 that I couldn't track down, DKJM2's clock was
getting all out of sync.
So I just reverted to r05, blew away both RTCs entirely, and wrote them
cleanly from scratch (obviously looking off the old code.) A bit
extreme, but it worked.
I believe I found the error in the process, day and month were resetting
the counter to 0 instead of 1, it wasn't handling leap year, etc.
While I was at it, I fixed the day-of-week calculation. The SharpRTC
epoch is actually 1000-01-01, and not 1900-01-01.
I'm sure you guys will be really happy that if it ever becomes 1000AD
again and you're playing a ROM hack that uses the SharpRTC and relies on
its weekday value that it will show the correct day now ...
Kind of a pain to compute, but nothing compared to the seventh circle of
hell that was my IBM dBase III Julian<>Gregorian conversion functions :/
Also found a few bugs in the Epson code this way. And I moved the round
seconds actions and flag clear to +125us after flag set.
So, if you had the old r06 or r07, please delete those.
Unfortunately, this took all of my energy today, so the file names
inside manifest changes will have to be in the next WIP.
EDIT: ran a diff against old r07 and new r06.
- added if(days == 31) case twice in EpsonRTC::tick_day()
- forgot weekday = 0; in SharpRTC::load()
- need to move the cartridge+cheat objects up in sfc/Makefile again
- System::init() needs assert(interface != nullptr /* not 0 */)
byuu says:
Changelog:
- EpsonRTC emulation improved further (stop/pause blocks IRQs, verified
secondhi >= 3 triggers 30-second adjust (even on invalid BCD),
second-changed flag is mirrored to minute+hour+day+month+weekday,
improved busy timing, etc.)
- SharpRTC rewritten, works like EpsonRTC now in that it has its own
timing thread and ticks with the emulation
- won't attempt to read from an unopen file stream now (I think this is
what was crashing Sufami Turbo without SRAM?)
- added Tools -> Synchronize Time option below load/save state options.
Only appears when you play a game with an emulated RTC chip
Just realized that I used 125ms for the 30-second adjust instead of
125us, so I'll fix that in the next WIP.
Aside from that, this is as good as the emulation is going to get.
There's still a couple of absolutely psychopathic edge cases that are
just too damn difficult to simulate.
So that leaves us with data port control + decompression status
registers to investigate before SPC7110 will be finished.
byuu says:
Changelog:
- renamed SRTC -> SharpRTC
- renamed RTC4513 -> EpsonRTC (consistent with DSP naming schema)
- full emulation of invalid BCD values for EpsonRTC
- fixed EpsonRTC IRQ mask
Remaining SPC7110 tasks:
- RTC: test 30-second adjust with all values from 00-7f
- RTC: hold is supposed to tick the clock one second after being
released?
- RTC: wait times are too long (need to use >32KHz oscillation to
simulate it properly)
- Data Port: test $4818 more thoroughly (not too important)
- Decompression: test $480c more thoroughly (very important)
- Decompression: perform some tests on DMA transferring data, especially
with $4807 set
Write-offs, at least for now:
- Decompression: emulation of the crash/glitch behavior seen on the real
chip when fed invalid data
- Decompression: I can find no use of $4808
- ALU: Booth cycles for MUL/DIV (this could actually be rather important
if the game reads simpler values quickly [some shoddy games did this
with the CPU ALU])
- RTC: delay after hold release for $4841 accesses
- RTC: 125uS delay after 30-second adjust that will screw with registers
in odd ways if your read or write too soon
- RTC: psychotic behavior of reading too early returning port address
- 1
byuu says:
I split the RTC-4513 code from the SPC7110 code (and obviously in the
XML mapping as well), since they are separate chips on the FEoEZ PCB.
In this way, you can use just the RTC-4513 in homebrew now if you want.
It's a bit nicer than the Sharp RTC from Dai Kaijuu Monogatari II.
This was needed anyway, it has an internal oscillator that's not
divisible by the SNES clock used by the SPC7110; and both the RTC and
decompression code need to be running their own threads anyway.
In the process, I rewrote the way variables are stored to use named
integers rather than a block of memory. Makes the code a lot easier on
the eyes, and more importantly, will make emulating bad BCD values
a whole lot easier.
byuu says:
Changelog: (SPC7110)
- emulated $480b.d0 + $4807 deinterleave mode
- cleaned up decompression core (I'd still like to wipe out those static
variables, those are bad for save states.)
- improved emulation of data port ($481a only increments, never reads)
- improved emulation of RTC (block appropriate bits in the hour register
based on 12/24h mode select; $4840 modes != 1 all disable the chip;
added MDR; etc.)
byuu says:
Substantial improvements to SPC7110 emulation. Added all of the findings
from http://byuu.org/temp/spc7110-mmio.txt that I understood.
I also completely rewrote the RTC. We only had about ~40% of the chip
emulated before. Turns out there's cool stuff like spare RAM, calendar
disable, 12-hour mode, IRQs, IRQ masking, duty cycles, etc. So I went
ahead and emulated all of it. The upper bits on hour+ don't work as
nocash described though, not sure what doc he was reading. The Epson
RTC-4513 manual I have doesn't explain any of the registers.
The new RTC core also ticks seconds based on the emulated clock, and not
on the system clock. This is going to suck for people wanting to keep
the in-game clock synced with their computer, who also abuse fast
forward and save states. Fast forward makes the clock run faster, and
save states will jump the clock to the time it was at when you took the
save state. (It will keep track of the number of seconds between
unloading the game and loading it again, so time passes normally there.)
This is required, however, and how I'm going to rearrange all of the
RTCs for all systems. Any other method can be detected by the game, and
is thus not faithful emulation. To help with this, I'll probably make an
RTC time tool so that you can adjust the time when the emulator isn't
running, but I don't intend to bundle that into bsnes.
New state format bit-packs the RTCRAM values, and it also uses a 64-bit
timestamp. So it's 16 bytes now instead of 20 bytes. S-RTC will drop
from 16 to 12 when it's done.
The RTC busy flag timing needs to be refined with more hardware tests,
there's a slim chance of the game hanging on save at the moment.
The SPC7110 ALU delays are emulated now, too. They may not be perfectly
accurate, but they get the basic gist down.
The only hack that needs to be removed now is the decompression busy
flag. That's ... not going to be fun.
I also redid the mouse emulation. I was polling the mouse position
multiple times per latch. So it should be a bit more precise now,
I hope.
I read it regardless of latch state, dunno if that's good or not.
(r01 was not posted to the WIP thread)
byuu says:
r01 changelog:
- major improvements to SPC7110 MCU (memory controller unit)
- revised SPC7110 memory map to reflect aforementioned improvements
- added "Toggle Tracer" hotkey to target-ethos (only works for SFC so
far, I plan to use this as a lightweight laevateinn for FEoEZ)
r02 changelog:
- quick fix: SRAM is mapped to 00-3f|80-bf:6000-7fff
- quick fix: $4830.d7 is SRAM chip enable, not SRAM write enable. Reads
return 0x00 when this bit is clear
byuu says:
Changelog to v089:
- fix SA-1 Mini Yonku Shining Scorpion
- load from command-line
- remove SNES::Cartridge::NVRAM
- fix SGB save RAM
- update cheats.xml
- already mapped inputs cancel input assign
BS-X wasn't broken after all. I forgot that I ran purify on my BS-X
images, and that the BS Zelda ZIP I have has the disable ROM bit set.
Whoops.
byuu says:
Changelog:
- fixed BGnxOFS to not cache when MOSAIC is not in effect [fixes Air
Strike Patrol "Good Luck" text]
- added GameBoy::Interface::Hook for SGB bindings [SGB works again]
- do not create bsnes/ folder unless it is absolutely needed (eg you
create a save state or state manager archive)
- SuperFX works [needed to call system.init() in Interface::Interface()]
Last chance for any bug reports, at this point I pretty much consider
ethos to be finished. It's shipping without BS-X BIOS game loading
support. Sorry, I can't figure that one out.
byuu says:
Changelog:
- default placement of presentation window optimized for 1024x768
displays or larger (sorry if yours is smaller, move the window
yourself.)
- Direct3D waits until a previous Vblank ends before waiting for the
next Vblank to begin (fixes video timing analysis, and ---really---
fast computers.)
- Window::setVisible(false) clears modality, but also fixed in Browser
code as well (fixes loading images on Windows hanging)
- Browser won't consume full CPU resources (but timing analysis will,
I don't want stalls to affect the results.)
- closing settings window while analyzing stops analysis
- you can load the SGB BIOS without a game (why the hell you would want
to ...)
- escape closes the Browser window (it won't close other dialogs, it has
to be hooked up per-window)
- just for fun, joypad hat up/down moves in Browser file list, any
joypad button loads selected game [not very useful, lacks repeat, and
there aren't GUI load file open buttons]
- Super Scope and Justifier crosshairs render correctly (probably
doesn't belong in the core, but it's not something I suspect people
want to do themselves ...)
- you can load GB, SGB, GB, SGB ... without problems (not happy with how
I did this, but I don't want to add an Interface::setInterface()
function yet)
- PAL timing works as I want now (if you want 50fps on a 60hz monitor,
you must not use sync video) [needed to update the DSP frequency when
toggling video/audio sync]
- not going to save input port selection for now (lot of work), but it
will properly keep your port setting across cartridge loads at least
[just goes to controller on emulator restart]
- SFC overscan on and off both work as expected now (off centers image,
on shows entire image)
- laevateinn compiles properly now
- ethos goes to ~/.config/bsnes now that target-ui is dead [honestly,
I recommend deleting the old folder and starting over]
- Emulator::Interface callbacks converted to virtual binding structure
that GUI inherits from (simplifies binding callbacks)
- this breaks Super Game Boy for a bit, I need to rethink
system-specific bindings without direct inheritance
Timing analysis works spectacularly well on Windows, too. You won't get
your 100% perfect rate (unless maybe you leave the analysis running
overnight?), but it'll get really freaking close this way.
byuu says:
Changelog:
- added NSS DIP switch settings window (when loading NSS carts with
appropriate manifest.xml file)
- added video shader selection (they go in ~/.config/bsnes/Video
Shaders/ now)
- added driver selection
- added timing settings (not only allows video/audio settings, also has
code to dynamically compute the values for you ... and it actually
works pretty good!)
- moved "None" controller device to bottom of list (it is the least
likely to be used, after all)
- added Interface::path() to support MSU1, USART, Link
- input and hotkey mappings remember list position after assignment
- and more!
target-ethos now has all of the functionality of target-ui, and more.
Final code size for the port is 101.2KB (ethos) vs 167.6KB (ui).
A ~67% reduction in code size, yet it does even more! And you can add or
remove an entire system with only three lines of code (Makefile include,
header include, interface append.)
The only problem left is that the BS-X BIOS won't load the BS Zelda no
Densetsu file.
I can't figure out why it's not working, would appreciate any
assistance, but otherwise I'm probably just going to leave it broken for
v089, sorry.
So the show stoppers for a new release at this point are:
- fix laevateinn to compile with the new interface changes (shouldn't be
too hard, it'll still use the old, direct interface.)
- clean up Emulator::Interface as much as possible (trim down
Information, mediaRequest should use an alternate struct designed to
load firmware / slots separately)
- enhance purify to strip SNES ROM headers, and it really needs a GUI
interface
- it would be highly desirable to make a launcher that can create
a cartridge folder from an existing ROM set (* ethos will need to
accept command-line arguments for this.)
- probably need to remember which controller was selected in each port
for each system across runs
- need to fix the cursor for Super Scope / Justifier games (move from
19-bit to 32-bit colors broke it)
- have to refactor that cache.(hv)offset thing to fix ASP
byuu says:
Changelog:
- fixed Super Game Boy input
- Sufami Turbo prompts to load second slot now (you can cancel to leave
it empty)
- NEC/Hitachi/ARM DSP firmware is loaded; NEC RAM is saved
- folders are grouped properly: Sufami Turbo save RAM saves to its slot
folder, etc.
- title shows properly (SGB shows GB game name only, BS-X slotted shows
game name and optional slot name, etc.)
- above extends to saving cheats and such in their correct folders
as well
- added cheat editor and cheat database
- and hooked up the requisite SGB mode loads and can use GB cheats,
because that's kinda cool
- added state manager
- input settings, cheat editor and state manager all have erase (one)
and reset (all) buttons now
- lots of cleanup and restructuring on Emulator::Interface; *almost*
finished with it now
Remaining:
- BS-X BIOS won't show the data pack
- need XML mapping information window
- need NSS DIP switch settings window
- need video shaders
- need driver selection
- need to hide controllers that have no inputs from the input mapping
list (tempted to just remove "None" as a controller option ...)
ethos is currently 88KB of code, ui is 167KB. We're missing about 5-10KB
of code in ethos to complete it, so the rewrite nearly cut the GUI code
size in half, while support all of the same functionality and allowing
the easy addition and removal of entire systems.
byuu says:
Changelog:
- all hotkeys from target-ui now exist in target-ethos
- controller port menus now show up when you load a system (hidden if
there are no options to choose from)
- tools menu auto-hides with no game open ... not much point to it then
- since we aren't using RawInput's multi-KB/MS support anyway, input and
hotkey mappings remove KB0:: and turn MS0:: into Mouse::, makes it
a lot easier to read
- added mute audio, sync video, sync audio, mask overscan
- added video settings: saturation, gamma, luminance, overscan
horizontal, overscan vertical
- added audio settings: frequency, latency, resampler, volume
- added input settings: when focus is lost [ ] pause emulator [ ] allow
input
- pausing and autopausing works
- status messages hooked up (show a message in status bar for a few
seconds, then revert to normal status text)
- sub systems (SGB, BSX, ST) sorted below primary systems list
- added geometry settings cache
- Emulator::Interface cleanups and simplifications
- save states go into (cart foldername.extension/bsnes/state-#.bsa) now.
Idea is to put emulator-specific data in their own subfolders
Caveats / Missing:
- SGB input does not work
- Sufami Turbo second slot doesn't work yet
- BS-X BIOS won't show the data pack
- need XML mapping information window
- need cheat editor and cheat database
- need state manager
- need video shaders
- need driver selection
- need NSS DIP switch settings
- need to hide controllers that have no inputs from the input mapping
list
So for video settings, I used to have contrast/brightness/gamma.
Contrast was just a multiplier on intensity of each channel, and
brightness was an addition or subtraction against each channel. They
kind of overlapped and weren't that effective. The new setup has
saturation, gamma and luminance.
Saturation of 100% is normal. If you lower it, color information goes
away. 0% = grayscale. If you raise it, color intensity increases (and
clamps.) This is wonderful for GBA games, since they are oversaturated
to fucking death. Of course we'll want to normalize that inside the
core, so the same sat. value works on all systems, but for now it's
nice. If you raise saturation above 100%, it basically acts like
contrast used to. It's just that lowering it fades to grayscale rather
than black.
Adding doesn't really work well for brightness, it throws off the
relative distance between channels and looks like shit. So now we have
luminance, which takes over the old contrast <100% role, and just fades
the pixels toward black. Obviously, luminance > 100% would be the same
as saturation > 100%, so that isn't allowed, it caps at 100% now.
Gamma's the same old function. Gamma curve on the lower-half of the
color range.
Effects are applied in the order they appear in the GUI: color ->
saturate -> gammify -> luminate -> output.
byuu says:
Changelog:
- phoenix has added Window::setModal(bool modal = true);
- file dialog is now modal. This allows emulation cores to request data
and get it immediately before continuing the loading process
- save data is hooked up for most systems, still need to handle
subsystem slot saves (Sufami Turbo, basically.)
- toggle fullscreen key binding added (Alt+Enter for now. I think F11 is
probably better though, Enter is often mapped to game start button.)
- video scaling is in (center, scale, stretch), works the same in
windowed and fullscreen mode (stretch hides resize window option), all
in the settings menu now
- enough structure to map all saved paths for the browser and to load
BS-X slotted carts, BS-X carts, single Sufami Turbo carts
Caveats / Missing:
- Super Game Boy input doesn't work yet (due to change in callback
binding)
- doesn't load secondary Sufami Turbo slot yet
- BS-X BIOS isn't show the data pack games to load for some reason (ugh,
I hate the shit out of debugging BS-X stuff ...)
- need mute audio, sync audio+video toggle, save/load state menu and
quick keys, XML mapping information window
- need cheat editor and cheat database
- need state manager
- need to sort subsystems below main systems in load menu (basically
just see if media.slot.size() > 0)
- need video shaders (will probably leave off filters for the time being
... due to that 24/30-bit thing)
- need video adjustments (contrast etc, overscan masks)
- need audio adjustments (frequency, latency, resampler, volume,
per-system frequency)
- need driver selection and input focus policy (driver crash detection
would be nice too)
- need NSS DIP switch settings (that one will be really fun)
- need to save and load window geometry settings
- need to hook up controller selection (won't be fun), create a map to
hide controllers with no inputs to reassign
byuu says:
ethos is going to be absolutely amazing. You guys are in for a treat :D
I'm impressing the hell out of myself with how well-structured this code
is, it's allowing me to do amazing new things.
Just a small sampling of what's in store (and already implemented):
The file browser will display folders as "[ folder name ]", and
cartridge folders as "Game Name" (no extension, no /) [icons would be
nicer, but well ... phoenix.]
Folders are sorted above cartridge folders.
Cartridge folders for other systems do not show up in the list.
Not only are unique paths stored for each image type, your position in
the list is saved across runs.
Some voodoo was added to GTK+ so that all targets even scroll directly
to that item when you open the list. Load->System->Enter restarts your
last game.
That sounds really simple and obvious, but it makes an -incredible-
difference. Didn't realize it until I tried an implementation of it,
wow.
The input mapping list now lets you bind as many hotkeys as you want to
any given input.
So SFC::Port1::Joypad::B = Keyboard::Z or Joypad::Button1 ... no need to
remap everything to switch between keyboard and joypad. Either one
activates the key.
There is a separate Hotkeys tab now. This should hopefully end the
confusion about how to remap hotkeys that users experience.
Hotkeys are different, too. Instead of OR logic, they use AND logic.
So Fullscreen = Keyboard::Alt and Keyboard::Enter. Both must be pressed
to enter the key. This lets you easily implement "super" modifier keys.
The actual codebase has new features the old UI never had, and has about
~50% of the old functionality (so far, of course), yet is only ~25% as
much code.
The entire GUI no longer needs to pull in all the headers for each
emulated system. It just needs a small interface header file.
Then bind the entire system with exactly **two** lines of code.
Everything is dynamically generated for you after that.
byuu says:
Lots of work on ethos, nothing more.
Settings window is in, InputManager pulls all the inputs from all cores
and binds them to ruby inputs, main window adds menu and dynamically
maps in all systems and cartridge slots and options and such, file
browser's back in, RAM is loaded and saved, etc. It's barely usable, but
you have to set up your inputs from the config file by hand for now.
byuu says:
From this WIP, I'm starting on the impossible task of
a declarative-based GUI, which I'm calling Ethos.
base/ becomes emulator/, and we add emulator/interface.hpp, which is
a base API that all emulation cores must implement in full.
(Right now, it's kind of a hybrid to work with the old GUI and the new
GUI at the same time, of course.)
Unlike the old interfaces, the new base class also provides all general
usability hooks: loading and saving files and states, cheat codes, etc.
The new interface also contains information and vector structs to
describe all possible loading methods, controller bindings, etc; and
gives names for them all.
The actual GUI in fact should not include eg <gba/gba.hpp> anymore.
Should speed up GUI compilation.
So the idea going forward is that ethos will build a list of emulators
right when the application starts up.
Once you've appended an emulator to that list, you're done. No more GUI
changes are needed to support that system.
The GUI will have code to parse the emulator interfaces list, and build
all the requisite GUI options dynamically, declarative style.
Ultimately, once the project is finished, the new GUI should look ~99%
identical to the current GUI. But it'll probably be a whole lot smaller.
byuu says:
(r05 and r06 were save points between large core modifications)
I would really appreciate extensive regression testing (especially
around SuperFX, Cx4, ST018, DSP-n, ST-01n, NES, GB) at this point.
The most critical core changes should be completed now. And it was an
unbelievable amount of restructuring.
Changelog:
- SuperFX core moved to Processor::GSU
- SNES::CPU core moved to Processor::R65816
- SNES::SMP core moved to Processor::SPC700
- NES::CPU core renamed to Processor::R6502
- use filestream to load RAM files from interface
- save states store SHA256 instead of CRC32 (CRC32 usage removed
entirely from bsnes)
- nes/ -> fc/ and NES -> FC
- snes/ -> sfc/ and SNES -> SFC
- SuperFamicom::MappedRAM::copy uses stream instead of data+size
- Linux port uses gcc-4.7 (still using only gcc-4.6 subset, so you can
make a gcc-4.6 symlink for now if you like.)
- all profiles and all targets compile and work properly
All eight instruction set cores have been moved to processor/ now.
Consistency's a wonderful thing.
The last remnants of NES/SNES are now limited to target-ui code; and the
nall/(system) folder names.
I'm building with gcc-4.7 on my Linux box now because the resultant
binaries are up to 20% faster (seriously) than gcc-4.6.
byuu says:
This will hopefully be a short-lived WIP, I just want to save
a breakpoint before I attempt something else.
NES, GB, GBC and GBA all load via const stream& now.
NES CPU core moved to Processor::RP2A03.
byuu says:
static vector<uint8_t> file::read(const string &filename); replaces:
static bool file::read(const string &filename, uint8_t *&data, unsigned
&size); This allows automatic deletion of the underlying data.
Added vectorstream, which is obviously a vector<uint8_t> wrapper for
a data stream. Plan is for all data accesses inside my emulation cores
to take stream objects, especially MSU1. This lets you feed the core
anything: memorystream, filestream, zipstream, gzipstream, httpstream,
etc. There will still be exceptions for link and serial, those need
actual library files on disk. But those aren't official hardware devices
anyway.
So to help with speed a bit, I'm rethinking the video rendering path.
Previous system:
- core outputs system-native samples (SNES = 19-bit LRGB, NES = 9-bit
emphasis+palette, DMG = 2-bit grayscale, etc.)
- interfaceSystem transforms samples to 30-bit via lookup table inside
the emulation core
- interfaceSystem masks off overscan areas, if enabled
- interfaceUI runs filter to produce new target buffer, if enabled
- interfaceUI transforms 30-bit video to native display depth (24-bit or
30-bit), and applies color-adjustments (gamma, etc) at the same time
New system:
- all cores now generate an internal palette, and call
Interface::videoColor(uint32_t source, uint16_t red, uint16_t green,
uint16_t blue) to get native display color post-adjusted (gamma, etc
applied already.)
- all cores output to uint32_t* buffer now (output video.palette[color]
instead of just color)
- interfaceUI runs filter to produce new target buffer, if enabled
- interfaceUI memcpy()'s buffer to the video card
videoColor() is pretty neat. source is the raw pixel (as per the
old-format, 19-bit SNES, 9-bit NES, etc), and you can create a color
from that if you really want to. Or return that value to get a buffer
just like v088 and below. red, green, blue are 16-bits per channel,
because why the hell not, right? Just lop off all the bits you don't
want. If you have more bits on your display than that, fuck you :P
The last step is extremely difficult to avoid. Video cards can and do
have pitches that differ from the width of the texture. Trying to make
the core account for this would be really awful. And even if we did
that, the emulation routine would need to write directly to a video card
RAM buffer. Some APIs require you to lock the video buffer while
writing, so this would leave the video buffer locked for a long time.
Probably not catastrophic, but still awful. And lastly, if the
emulation core tried writing directly to the display texture, software
filters would no longer be possible (unless you -really- jump through
hooks and divert to a memory buffer when a filter is enabled, but ...
fuck.)
Anyway, the point of all that work was to eliminate an extra video copy,
and the need for a really painful 30-bit to 24-bit conversion (three
shifts, three masks, three array indexes.) So this basically reverts us,
performance-wise, to where we were pre-30 bit support.
[...]
The downside to this is that we're going to need a filter for each
output depth. Since the array type is uint32_t*, and I don't intend to
support higher or lower depths, we really only need 24+30-bit versions
of each filter. Kinda shitty, but oh well.
byuu says:
Basically, the current implementation of nall/array is deprecated now.
The old method was for non-reference types, it acted like a vector for
POD types (raw memory allocation instead of placement new construction.)
And for reference types, it acted like an unordered set. Yeah, not good.
As of right now, nall/array is no longer used. The vector type usage was
replaced with actual vectors.
I've created nall/set, which now contains the specialization for
reference types.
nall/set basically acts much like std::unordered_set. No auto-sort, only
one of each type is allowed, automatic growth.
This will be the same both for reference and non-reference types ...
however, the non-reference type wasn't implemented just yet.
Future plans for nall/array are for it to be a statically allocated
block of memory, ala array<type, size>, which is meant for RAII memory
usage.
Have to work on the specifics, eg the size as a template parameter may
be problematic. I'd like to return allocated chunks of memory (eg
file::read) in this container so that I don't have to manually free the
data anymore.
I also removed nall/moduloarray, and moved that into the SNES DSP class,
since that's the only thing that uses it.
byuu says:
Changes to v088:
- OBJ mosaic Y fix
- Laevateinn compilation
- Remove filebrowser extra code
- Fix -march=native on Windows
- Fix purify mkdir
- GBA sound volume
- Add .gbb
- free firmware memory after file load
- Add GBA game to profile list (Yoshi's Island should work)
byuu says:
Changelog:
- DMA channel masks added (some are 27-bit source/target and some are
14-bit length -- hooray, varuint_t class.)
- No more state.pending flags. Instead, we set dma.pending flag when we
want a transfer (fixes GBA Video - Pokemon audio) [Cydrak]
- fixed OBJ Vmosaic [Cydrak, krom]
- OBJ cannot read <=0x13fff in BG modes 3-5 (fixes the garbled tile at
the top-left of some games)
- DMA timing should be much closer to hardware now, but probably not
perfect
- PPU frame blending uses blargg's bit-perfect, rounded method (slower,
but what can you do?)
- GBA carts really unload now
- added nall/gba/cartridge.hpp: used when there is no manifest. Scans
ROMs for library tags, and selects the first valid one found
- added EEPROM auto-detection when EEPROM size=0. Forces disk/save state
size to 8192 (otherwise states could crash between pre and post
detect.)
- detects first read after a set read address command when the size
is zero, and sets all subsequent bit-lengths to that value, prints
detected size to terminal
- added nall/nes/cartridge.hpp: moves iNES detection out of emulation
core.
Important to note: long-term goal is to remove all
nall/(system)/cartridge.hpp detections from the core and replace with
databases. All in good time.
Anyway, the GBA workarounds should work for ~98.5% of the library, if my
pre-scanning was correct (~40 games with odd tags. I reject ones without
numeric versions now, too.)
I think we're basically at a point where we can release a new version
now. Compatibility should be relatively high (at least for a first
release), and fixes are only going to affect one or two games at a time.
I'd like to start doing some major cleaning house internally (rename
NES->Famicom, SNES->SuperFamicom and such.) Would be much wiser to do
that on a .01 WIP to minimize regressions.
The main problems with a release now:
- speed is pretty bad, haven't really optimized much yet (not sure how
much we can improve it yet, this usually isn't easy)
- sound isn't -great-, but the GBA audio sucks anyway :P
- couple of known bugs (Sonic X video, etc.)
byuu says:
Changelog:
- revised NES XML tag nesting
- program.rom is going to refer to PRG+CHR combined. Split is going to
have to use different file names
- slot loader is gone (good riddance!)
- "Cartridge -> Load Game Boy Advance Cartridge ..." has become "Load ->
Game Boy Advance ..."
- Load Satellaview Slotted Cartridge is gone. If you load an SNES
cartridge and it sees <bsx><slot>, it asks if you want to load a BS-X
data pack
- If you load a Sufami Turbo cartridge with <cartridge linkable="true">,
it asks if you want to link in another Sufami Turbo cartridge
- if you try and load the same exact Sufami Turbo cartridge in both
slots, it yells at you for being an idiot :P
byuu says:
Be sure to run make install, and move required images to their appropriate system profile folders.
I still have no warnings in place if those images aren't present.
Changelog:
- OBJ mosaic should hopefully be emulated correctly now (thanks to krom
and Cydrak for testing the hardware behavior)
- emulated dummy serial registers, fixes Sonic Advance (you may still
need to specify 512KB FlashROM with an appropriate ID, I used
Panaonic's)
- GBA core exits scheduler (PPU thread) and calls
interface->videoRefresh() from main thread (not required, just nice)
- SRAM, FRAM, EEPROM and FlashROM initialized to 0xFF if it does not
exist (probably not needed, but FlashROM likes to reset to 0xFF
anyway)
- GBA manifest.xml for file-mode will now use "gamename.xml" instead of
"gamename.gba.xml"
- started renaming "NES" to "Famicom" and "SNES" to "Super Famicom" in
the GUI (may or may not change source code in the long-term)
- removed target-libsnes/
- added profile/
Profiles are the major new feature. So far we have:
Famicom.sys/{nothing (yet?)}
Super Famicom.sys/{ipl.rom}
Game Boy.sys/{boot.rom}
Game Boy Color.sys/{boot.rom}
Game Boy Advance.sys/{bios.rom[not included]}
Super Game Boy.sfc/{boot.rom,program.rom[not included]}
BS-X Satellaview.sfc/{program.rom,bsx.ram,bsx.pram}
Sufami Turbo.sfc/{program.rom}
The SGB, BSX and ST cartridges ask you to load GB, BS or ST cartridges
directly now. No slot loader for them. So the obvious downsides: you
can't quickly pick between different SGB BIOSes, but why would you want
to? Just use SGB2/JP. It's still possible, so I'll sacrifice a little
complexity for a rare case to make it a lot easier for the more common
case. ST cartridges currently won't let you load the secondary slot.
BS-X Town cart is the only useful game to load with nothing in the slot,
but only barely, since games are all seeded on flash and not on PSRAM
images. We can revisit a way to boot the BIOS directly if and when we
get the satellite uplink emulated and data can be downloaded onto the
PSRAM :P BS-X slotted cartridges still require the secondary slot.
My plan for BS-X slotted cartridges is to require a manifest.xml to
specify that it has the BS-X slot present. Otherwise, we have to load
the ROM into the SNES cartridge class, and parse its header before we
can find out if it has one. Screw that. If it's in the XML, I can tell
before loading the ROM if I need to present you with an optional slot
loading dialog. I will probably do something similar for Sufami Turbo.
Not all games even work with a secondary slot, so why ask you to load
a second slot for them? Let the XML request a second slot. A complete
Sufami Turbo ROM set will be trivial anyway. Not sure how I want to do
the sub dialog yet. We want basic file loading, but we don't want it to
look like the dialog 'didn't do anything' if it pops back open
immediately again. Maybe change the background color of the dialog to
a darker gray? Tacky, but it'd give you the visual cue without the need
for some subtle text changes.
byuu says:
Changelog:
- serialize processor.pc.data, not processor.pc
- call CPU processor.setMode() in ARM serialize
- serialize BIOS.mdr
- support SRAM > 32KB
- EEPROM, FlashROM serialize
- EEPROM lose nall/bitarray.hpp
- noise line feed after envelope
- space out PSR read
- ST018 needs byte reads fixed (don't align) [fixes HNMS2]
- flush sram/eeprom/flashrom to 0 on cartridge load
- APU/PPU dont sync back to CPU if syncing for state
- fixed APU sync problems in GB/GBC core that could possibly wreck save
states as well
Quite a lot of little problems there. I believe GBA save states are
fixed now.
byuu says:
Changelog:
- fixed FIFO[1] reset behavior (fixes audio in Sword of Mana)
- added FlashROM emulation (both sizes)
- GBA parses RAM settings from manifest.xml now
- save RAM is written to disk now
- added save state support (it's currently broken, though)
- fixed ROM/RAM access timings
- open bus should mostly work (we don't do the PC+12 stuff yet)
- emulated the undocumented memory control register (mirror IWRAM,
disable I+EWRAM, EWRAM wait state count)
- emulated keypad interrupts
- emulated STOP (freezes video, audio, DMA and timers; only breaks on
keypad IRQs)
- probably a lot more, it was a long night ...
Show stoppers, missing things, broken things, etc:
- ST018 is still completely broken
- GBC audio sequencer apparently needs work
- GBA audio FIFO buffer seems too quiet
- PHI / ROM prefetch needs to be emulated (no idea on how to do this,
especially PHI)
- SOUNDBIAS 64/128/256khz modes should output at that resolution
(really, we need to simulate PWM properly, no idea on how to do this)
- object mosaic top-left coordinates are wrong (minor, fixing will
actually make the effect look worse)
- need to emulate PPU greenswap and color palette distortion (no idea on
how do this)
- need GBA save type database (I would also LIKE to blacklist
/ patch-out trainers, but that's a discussion for another day.)
- some ARM ops advance the prefetch buffer, so you can read PC+12 in
some cases
byuu says:
(r24 was a point release during merging of changes.)
This release is almost entirely Cydrak's direct work:
- Added ARM::sequential() and some WAITCNT timings
- Added Bus::io(uint32 pc), intended for prefetch timing
- Added ARM::load() with data rotation (fixed Mother 3 graphics)
- Added ARM::store() for data mirroring
- LDM, STM, and instruction fetch still use read/write()
- ARM::vector() no longer unmasks FIQs
- Set THUMB shifter flags via bit(), consistent with ARM
- Replace shifter loops with conditional tests
My changes:
- fixed sprite clipping on left-edge of screen
- added first system folder, GBA.system
- sudo make install is now make install
- make install will create GBA.system for you in your home folder
Windows users, take data/GBA.system and put it in the same folder as
bsnes.exe, and give it a BIOS named bios.rom
Or place it in your home folder (%APPDATA%/bsnes)
Also note that this is highly experimental, I'll probably be changing
things a lot before release.
EDIT: I botched the cartridge timing change. Will fix in r26. It'll
still run a bit too fast for now, unfortunately.
Tim Allen