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bsnes/bsnes/gba/memory/memory.hpp

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Update to v087r04 release. byuu says: GBA stuff re-added. Only thing missing that was there before is the ARM branch opcode. Since we're going to be staring at it for a very long time, I added a more interesting test video pattern. Went from 6fps to 912fps. Amazing what being able to divide can do for a frame rate.
2012-03-19 11:19:53 +00:00
struct Memory {
virtual uint32 read(uint32 addr, uint32 size) = 0;
virtual void write(uint32 addr, uint32 size, uint32 word) = 0;
};
Update to v087r08 release. byuu says: Added some more ARM opcodes, hooked up MMIO. Bind it with mmio[(addr 000-3ff)] = this; inside CPU/PPU/APU, goes to read(), write(). Also moved the Hitachi HG51B core to processor/, and split it apart from the snes/chip/hitachidsp implementation. This one actually worked really well. Very clean split between MMIO/DMA and the processor core. I may move a more generic DMA function inside the core, not sure yet. I still believe the HG51B169 to be a variant of the HG51BS family, but given they're meant to be incredibly flexible microcontrollers, it's possible that each variant gets its own instruction set. So, who knows. We'll worry about it if we ever find another HG51B DSP, I guess. GBA BIOS is constantly reading from 04000300, but it never writes. If I return prng()&1, I can get it to proceed until it hits a bad opcode (stc opcode, which the GBA lacks a coprocessor so ... bad codepath.) Without it, it just reads that register forever and keeps resetting the system, or something ... I guess we're going to have to try and get ARMwrestler working, because the BIOS seems to need too much emulation code to do anything at all.
2012-03-24 07:52:36 +00:00
struct StaticMemory : Memory {
Update to v087r04 release. byuu says: GBA stuff re-added. Only thing missing that was there before is the ARM branch opcode. Since we're going to be staring at it for a very long time, I added a more interesting test video pattern. Went from 6fps to 912fps. Amazing what being able to divide can do for a frame rate.
2012-03-19 11:19:53 +00:00
uint8_t *data;
unsigned size;
Update to v087r15 release. byuu says: Added linear (eg non-affine) sprite rendering, 4bpp and 8bpp with hflip and vflip. Nothing else. You can now see the Nintendo logo and Gameboy text at the end of the BIOS. It's a start =)
2012-04-03 00:47:28 +00:00
uint8& operator[](uint32 addr);
Update to v087r04 release. byuu says: GBA stuff re-added. Only thing missing that was there before is the ARM branch opcode. Since we're going to be staring at it for a very long time, I added a more interesting test video pattern. Went from 6fps to 912fps. Amazing what being able to divide can do for a frame rate.
2012-03-19 11:19:53 +00:00
uint32 read(uint32 addr, uint32 size);
void write(uint32 addr, uint32 size, uint32 word);
StaticMemory();
~StaticMemory();
};
Update to v087r14 release. byuu says: Fixed aforementioned issues. [From a previous post: - mul was using r(d) instead of r(n) for accumulate. - mull didn't remove c/v clear. - APU register mask was broken, so SOUNDBIAS was reading out wrong. - APU was only mapping 0x088 and not 0x089 as well. - Halfword reads in CPU+PPU+APU were all reading from the low address each time.] All CPU+PPU registers are now hooked up (not that they do anything.) SOUNDBIAS for APU was hooked up, got tired of working on it for the rest :P I recall from the GB APU that you can't just assign values for the APU MMIO regs. They do odd reload things as well. Also, was using MMIO read code like this: return ( (flaga << 0) || (flagb << 1) || (flagc << 2) ); Logical or doesn't work so well with building flags :P Bad habit from how I split multiple conditionals across several lines. So ... r14 is basically what r13 should have been yesterday, delaying my schedule by yet another day :(
2012-04-01 01:41:15 +00:00
struct MMIO : Memory {
virtual uint8 read(uint32 addr) = 0;
virtual void write(uint32 addr, uint8 data) = 0;
uint32 read(uint32 addr, uint32 size);
void write(uint32 addr, uint32 size, uint32 word);
};
Update to v087r04 release. byuu says: GBA stuff re-added. Only thing missing that was there before is the ARM branch opcode. Since we're going to be staring at it for a very long time, I added a more interesting test video pattern. Went from 6fps to 912fps. Amazing what being able to divide can do for a frame rate.
2012-03-19 11:19:53 +00:00
struct Bus : Memory {
Update to v087r08 release. byuu says: Added some more ARM opcodes, hooked up MMIO. Bind it with mmio[(addr 000-3ff)] = this; inside CPU/PPU/APU, goes to read(), write(). Also moved the Hitachi HG51B core to processor/, and split it apart from the snes/chip/hitachidsp implementation. This one actually worked really well. Very clean split between MMIO/DMA and the processor core. I may move a more generic DMA function inside the core, not sure yet. I still believe the HG51B169 to be a variant of the HG51BS family, but given they're meant to be incredibly flexible microcontrollers, it's possible that each variant gets its own instruction set. So, who knows. We'll worry about it if we ever find another HG51B DSP, I guess. GBA BIOS is constantly reading from 04000300, but it never writes. If I return prng()&1, I can get it to proceed until it hits a bad opcode (stc opcode, which the GBA lacks a coprocessor so ... bad codepath.) Without it, it just reads that register forever and keeps resetting the system, or something ... I guess we're going to have to try and get ARMwrestler working, because the BIOS seems to need too much emulation code to do anything at all.
2012-03-24 07:52:36 +00:00
Memory *mmio[0x400];
Update to v087r10 release. byuu says: Changelog: - fixed THUMB hi immediate reads (immediate * 4) - cartridge is properly mirrored to 32MB (eg 12mbit repeats as lo8+hi4+hi4+lo8+hi4+hi4) [so it's a bit slower than a standard memcpy fill] - added ARM - load/store halfword register offset - added ARM - load/store halfword immediate offset - added ARM - load signed halfword/byte register offset - added ARM - load signed halfword/byte immediate offset - added decode() function to make opcode bit testing a lot clearer (didn't apply it to the debugger yet) All ARMv4M and all THUMBv4 instructions should now be implemented. Although I'm not sure if my implementations of the new instructions are correct.
2012-03-27 11:02:57 +00:00
static uint32 mirror(uint32 addr, uint32 size);
Update to v087r08 release. byuu says: Added some more ARM opcodes, hooked up MMIO. Bind it with mmio[(addr 000-3ff)] = this; inside CPU/PPU/APU, goes to read(), write(). Also moved the Hitachi HG51B core to processor/, and split it apart from the snes/chip/hitachidsp implementation. This one actually worked really well. Very clean split between MMIO/DMA and the processor core. I may move a more generic DMA function inside the core, not sure yet. I still believe the HG51B169 to be a variant of the HG51BS family, but given they're meant to be incredibly flexible microcontrollers, it's possible that each variant gets its own instruction set. So, who knows. We'll worry about it if we ever find another HG51B DSP, I guess. GBA BIOS is constantly reading from 04000300, but it never writes. If I return prng()&1, I can get it to proceed until it hits a bad opcode (stc opcode, which the GBA lacks a coprocessor so ... bad codepath.) Without it, it just reads that register forever and keeps resetting the system, or something ... I guess we're going to have to try and get ARMwrestler working, because the BIOS seems to need too much emulation code to do anything at all.
2012-03-24 07:52:36 +00:00
Update to v087r04 release. byuu says: GBA stuff re-added. Only thing missing that was there before is the ARM branch opcode. Since we're going to be staring at it for a very long time, I added a more interesting test video pattern. Went from 6fps to 912fps. Amazing what being able to divide can do for a frame rate.
2012-03-19 11:19:53 +00:00
uint32 read(uint32 addr, uint32 size);
void write(uint32 addr, uint32 size, uint32 word);
Update to v087r08 release. byuu says: Added some more ARM opcodes, hooked up MMIO. Bind it with mmio[(addr 000-3ff)] = this; inside CPU/PPU/APU, goes to read(), write(). Also moved the Hitachi HG51B core to processor/, and split it apart from the snes/chip/hitachidsp implementation. This one actually worked really well. Very clean split between MMIO/DMA and the processor core. I may move a more generic DMA function inside the core, not sure yet. I still believe the HG51B169 to be a variant of the HG51BS family, but given they're meant to be incredibly flexible microcontrollers, it's possible that each variant gets its own instruction set. So, who knows. We'll worry about it if we ever find another HG51B DSP, I guess. GBA BIOS is constantly reading from 04000300, but it never writes. If I return prng()&1, I can get it to proceed until it hits a bad opcode (stc opcode, which the GBA lacks a coprocessor so ... bad codepath.) Without it, it just reads that register forever and keeps resetting the system, or something ... I guess we're going to have to try and get ARMwrestler working, because the BIOS seems to need too much emulation code to do anything at all.
2012-03-24 07:52:36 +00:00
void power();
Update to v087r04 release. byuu says: GBA stuff re-added. Only thing missing that was there before is the ARM branch opcode. Since we're going to be staring at it for a very long time, I added a more interesting test video pattern. Went from 6fps to 912fps. Amazing what being able to divide can do for a frame rate.
2012-03-19 11:19:53 +00:00
};
extern Bus bus;