Rekai Nyangadzayi Musuka
d05a924420
fix(cpu): use barrel shifter in data processing immediates
2022-01-17 11:02:34 -04:00
Rekai Nyangadzayi Musuka
2a416fb2c6
feat(cpu): implement format 12 thumb instructions
2022-01-17 10:07:50 -04:00
Rekai Nyangadzayi Musuka
ea5f0ce552
feat(cpu): implement some already decoded format 3 instructions
2022-01-17 09:29:11 -04:00
Rekai Nyangadzayi Musuka
e55d2dc323
feat(cpu): implement THUMB format 5 instructions
2022-01-17 09:28:46 -04:00
Rekai Nyangadzayi Musuka
3037407ebe
chore: mgba log now supports printing THUMB instructions
2022-01-17 07:18:44 -04:00
Rekai Nyangadzayi Musuka
1915d98bdd
feat(cpu): implement like 1 THUMB instruction
2022-01-16 12:46:59 -04:00
Rekai Nyangadzayi Musuka
4606a1ab25
chore: distinguish between undefined ARM and THUMB instr
2022-01-14 05:30:32 -04:00
Rekai Nyangadzayi Musuka
0cf052838d
chore(cpu): lay groundwork for THUMB instruction decoding and execution
2022-01-14 05:23:16 -04:00
Rekai Nyangadzayi Musuka
ae37b1218b
chore(cpu): refactor ARM functions to make room for THUMB
2022-01-14 04:26:09 -04:00
Rekai Nyangadzayi Musuka
070322064d
fix(cpu): fix conditions for GT cond
2022-01-14 04:19:54 -04:00
Rekai Nyangadzayi Musuka
37bd6758fb
fix(cpu): fix imm value calculation in MSR
2022-01-14 04:08:04 -04:00
Rekai Nyangadzayi Musuka
7f6ab626d9
fix(cpu): resolve off-by-one error when executing LDM
2022-01-14 03:43:03 -04:00
Rekai Nyangadzayi Musuka
77dba68a0b
feat(cpu): implement branch and exchange
...
If I want to continue with armwrestler, I'll have to implement
THUMB instructions now
2022-01-12 07:20:24 -04:00
Rekai Nyangadzayi Musuka
7adc7c8802
fix(cpu): make Data Processing instructions r15-aware
2022-01-12 07:20:24 -04:00
Rekai Nyangadzayi Musuka
229f7c3388
fix(cpu): make LDRH and STRH aware of r15
2022-01-12 07:20:21 -04:00
Rekai Nyangadzayi Musuka
5812b9713c
fix(cpu): account for r15 in LDR and STR instructions
2022-01-12 06:16:59 -04:00
Rekai Nyangadzayi Musuka
98c5803208
fix(cpu): flip two branches in PSR Transfer execution
2022-01-12 06:16:34 -04:00
Rekai Nyangadzayi Musuka
74abd3df4d
feat(cpu): implement MSR and MRS
2022-01-12 04:48:57 -04:00
Rekai Nyangadzayi Musuka
7531af7f2b
feat(cpu): stub PSR Transfer instructions
2022-01-12 03:40:51 -04:00
Rekai Nyangadzayi Musuka
1c173eb4b8
chore(io): implement IE and IME
2022-01-12 02:19:26 -04:00
Rekai Nyangadzayi Musuka
769c67b9d4
chore: remove some magic constants
2022-01-12 00:46:20 -04:00
Rekai Nyangadzayi Musuka
c1be53bcb2
fix(bus): remove accidental recursion
2022-01-10 21:25:45 -04:00
Rekai Nyangadzayi Musuka
072a66cfdb
fix(cpu): write results of ORR to destination register
2022-01-10 10:56:41 -04:00
Rekai Nyangadzayi Musuka
ed3bdd90fb
feat(cpu): implement TEQ
2022-01-10 08:09:02 -04:00
Rekai Nyangadzayi Musuka
e9c1c94cae
feat(cpu): Implement ORR
2022-01-10 08:06:00 -04:00
Rekai Nyangadzayi Musuka
0f08ad05be
feat(bus): implement IWRAM and EWRAM
2022-01-10 07:59:21 -04:00
Rekai Nyangadzayi Musuka
fd5006b29d
fix(ppu): properly access Mode 4 palette
2022-01-10 07:23:54 -04:00
Rekai Nyangadzayi Musuka
22b95b2a74
feat(cpu): refactor LDM/STM
2022-01-10 06:51:32 -04:00
Rekai Nyangadzayi Musuka
7d79a0bee2
feat(cpu): implement LDM/STM
2022-01-10 06:27:36 -04:00
Rekai Nyangadzayi Musuka
6c0651ca08
chore(io): DISPSTAT bits 3 and 4 better match GBATEK documentation
2022-01-10 06:26:42 -04:00
Rekai Nyangadzayi Musuka
0d8c5e6882
fix(cpu): fix off-by-word bug in BL
2022-01-10 06:26:02 -04:00
Rekai Nyangadzayi Musuka
89a8fe403b
feat(bus): have VCOUNT be addressable on the bus
2022-01-10 03:35:28 -04:00
Rekai Nyangadzayi Musuka
7c5d2d2389
feat(ppu): implement Mode 4
...
Implementation is not tested. Pending on LDM and STM so that I can
run beeg.gba
2022-01-10 03:35:24 -04:00
Rekai Nyangadzayi Musuka
2467b94dbd
chore(io): rename some io bitfield fields
2022-01-10 02:13:25 -04:00
Rekai Nyangadzayi Musuka
0d4c850218
chore: remove premature inlines
2022-01-10 01:24:14 -04:00
Rekai Nyangadzayi Musuka
bbe2ecfa53
chore: add FPS counter
2022-01-10 01:22:55 -04:00
Rekai Nyangadzayi Musuka
c54145ce3c
chore: improve code clarity
2022-01-09 23:34:33 -04:00
Rekai Nyangadzayi Musuka
ead6d1ce49
feat(ppu): improve timings + implement BG mode 3 bitmap
2022-01-09 22:16:34 -04:00
Rekai Nyangadzayi Musuka
581285a434
fix: allocate framebuf on heap
2022-01-08 20:30:57 -04:00
Rekai Nyangadzayi Musuka
0d203543ca
chore: add code for heap alloc of white texture
2022-01-08 18:52:11 -04:00
Rekai Nyangadzayi Musuka
eb6c00f0ac
chore(gui): switch from RGBA8888 to BGR5555 to match BG Mode 3
2022-01-08 04:54:39 -04:00
Rekai Nyangadzayi Musuka
da7f21f47e
feat: draw white texture using SDL2
2022-01-07 22:46:17 -04:00
Rekai Nyangadzayi Musuka
8fb666624f
fix(ppu): deallocate palette RAM on cleanup
2022-01-07 22:27:08 -04:00
Rekai Nyangadzayi Musuka
568c374131
chore: code cleanup
2022-01-07 20:00:42 -04:00
Rekai Nyangadzayi Musuka
910745f442
chore(bus): refactor bus.zig
2022-01-07 19:49:58 -04:00
Rekai Nyangadzayi Musuka
f8c6af3247
chore: refactor instruction exec code
2022-01-07 19:44:48 -04:00
Rekai Nyangadzayi Musuka
a407671de2
chore(io): alias @This() to Self in io.zig
2022-01-07 19:34:54 -04:00
Rekai Nyangadzayi Musuka
e9ec124e33
chore: refactor bios.zig and pak.zig
2022-01-07 19:33:49 -04:00
Rekai Nyangadzayi Musuka
9f64804763
fix: by convention deinit() should not take pointers to self
2022-01-07 19:16:23 -04:00
Rekai Nyangadzayi Musuka
c6123d8a6d
feat: implement PPU Timings in Scheduler
2022-01-05 21:18:33 -04:00
Rekai Nyangadzayi Musuka
f709458638
feat(sched): add HBlank and VBlank events to the scheduler
2022-01-05 17:34:59 -05:00
Rekai Nyangadzayi Musuka
5037b8f0cc
feat: implement S (when rd != 15) for several data processing instructions
2022-01-05 15:45:52 -05:00
Rekai Nyangadzayi Musuka
28a70d0112
feat: implement dedicated Barrel Shifter SHL and SHR
2022-01-05 13:58:11 -05:00
Rekai Nyangadzayi Musuka
7473ffedc7
chore: stub TST
2022-01-04 04:08:02 -06:00
Rekai Nyangadzayi Musuka
172f3e8efe
chore: comment-out logging by default
2022-01-04 03:58:11 -06:00
Rekai Nyangadzayi Musuka
28bb410dfd
fix(cpu): improve LDR/STR write-back logic
2022-01-04 03:55:41 -06:00
Rekai Nyangadzayi Musuka
5ea888f68c
feat(bus): implement Palette RAM and DISPSTAT
2022-01-04 03:29:56 -06:00
Rekai Nyangadzayi Musuka
8b9a80b279
fix(bus): restrict Game ROM and VRAM to a 16-bit bus
2022-01-04 03:08:12 -06:00
Rekai Nyangadzayi Musuka
ed9c1413b1
fix(cpu): properly implement SUB/CMP CSPSR carry bit condition
2022-01-04 03:08:08 -06:00
Rekai Nyangadzayi Musuka
8cabcd8901
fix(cpu): resolve reversed if statement + write back on W = 0
2022-01-04 01:57:37 -06:00
Rekai Nyangadzayi Musuka
8d8cedea59
chore: add mgba compatible (minus disasm) log function
2022-01-04 01:11:53 -06:00
Rekai Nyangadzayi Musuka
0f827fca96
chore: rename CPSR u32 from val to raw
2022-01-03 22:25:11 -06:00
Rekai Nyangadzayi Musuka
1fefd4de5c
chore: remove print statements
2022-01-03 21:30:08 -06:00
Rekai Nyangadzayi Musuka
3aa680ab8c
chore: remove all memory leaks
2022-01-03 20:08:55 -06:00
Rekai Nyangadzayi Musuka
8257a3899a
feat(ppu): implement VRAM
2022-01-03 19:52:10 -06:00
Rekai Nyangadzayi Musuka
1d4ba2e2b3
fix(emu): prevent infinite loop when advancing scheduler
2022-01-03 19:51:55 -06:00
Rekai Nyangadzayi Musuka
c9f0e1632c
fix(io): fix DISPCNT is at wrong IO address
2022-01-03 17:49:15 -06:00
Rekai Nyangadzayi Musuka
44d52d8137
feat(cpu): properly implement STR STRH and STRB
2022-01-03 17:48:43 -06:00
Rekai Nyangadzayi Musuka
dee0e113d8
feat(cpu): implement skipBios method
2022-01-02 14:58:39 -06:00
Rekai Nyangadzayi Musuka
eb37d73cb2
chore: panic on read from BIOS
...
GBA Bios requires a lot of implemented features, so we're ignoring it
for now
2022-01-02 14:57:59 -06:00
Rekai Nyangadzayi Musuka
1c42d1795a
feat(bus): add Io Struct
...
Also, add more information to all panic messages
2022-01-02 14:40:49 -06:00
Rekai Nyangadzayi Musuka
01d6399dfb
chore: rename consturctors to fit convention
2022-01-02 13:58:57 -06:00
Rekai Nyangadzayi Musuka
f09f814dc3
chore: move bitfield library to lib director
...
I'd presonally prefer to use a git submodule here but It doesn't quite
seem like git submodules are possible for individual files. I'll have to
check with FlorenceOS every once and a while to ensure that there are no
lingering soundness issues with the library.
Thanks to @N00byEdge for this wonderful library!
2022-01-02 13:19:09 -06:00
Rekai Nyangadzayi Musuka
de9045fba3
chore: use bitfield library
2022-01-02 13:01:11 -06:00
Rekai Nyangadzayi Musuka
e144261e07
feat(bus): emu is now able to read from user-provided BIOS
2022-01-02 03:16:03 -06:00
Rekai Nyangadzayi Musuka
65c3dd722c
feat(bus): implement Gameboy Advance MMIO
2022-01-02 02:36:06 -06:00
Rekai Nyangadzayi Musuka
b63eb2dabc
feat: implement ROM CLI argument
2022-01-01 23:37:21 -06:00
Rekai Nyangadzayi Musuka
52e367d24a
fix(cpu): purposely overflow when calculating PC during branch
2022-01-01 21:57:52 -06:00
Rekai Nyangadzayi Musuka
cc7e42efd8
feat(cpu): implement condition field behaviour
2022-01-01 21:56:58 -06:00
Rekai Nyangadzayi Musuka
c40a1af534
chore: conform to zig style guides
2022-01-01 21:08:47 -06:00
Rekai Nyangadzayi Musuka
f2cc0721c7
chore: run zig fmt
2022-01-01 03:42:20 -06:00
Rekai Nyangadzayi Musuka
92a06e49c3
chore(cpu): iron out some false assumptions
2022-01-01 03:41:50 -06:00
Rekai Nyangadzayi Musuka
c660ca8922
feat: implement LDR STR
2021-12-29 17:16:32 -06:00
Rekai Nyangadzayi Musuka
7cc3f40a85
chore: run zig fmt
2021-12-29 15:13:50 -06:00
Rekai Nyangadzayi Musuka
5b3b81e4dc
Initial Commit
2021-12-29 15:09:00 -06:00
