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98 Commits

Author SHA1 Message Date
Rekai Nyangadzayi Musuka ae69d9981e feat(cpu): implement fix for ADC and implement SBC 2022-01-18 14:16:58 -04:00
Rekai Nyangadzayi Musuka faa8f724a0 chore(barrel_shifter): remove panic from ASR 2022-01-18 14:16:39 -04:00
Rekai Nyangadzayi Musuka 25c57a4cc7 fix(barrel_shifter): should not modify cpsr when amount == 0 2022-01-18 13:30:41 -04:00
Rekai Nyangadzayi Musuka a7a44c4463 chore(cpu): refactor the barrel shifter once again 2022-01-17 15:55:55 -04:00
Rekai Nyangadzayi Musuka d4d2fedfbe feat(cpu): implement ADC 
ADC interacting w/ the Barrel Shifter is not working though
 2022-01-17 14:29:34 -04:00
Rekai Nyangadzayi Musuka 483e149b32 feat(cpu): implement RRX for Barrel Shifter 2022-01-17 14:19:40 -04:00
Rekai Nyangadzayi Musuka 85ffdf44f5 feat(cpu): implement SUB in THUMB format 3 2022-01-17 11:36:02 -04:00
Rekai Nyangadzayi Musuka 9098a55ae3 feat(cpu): implement ARM SUB in data processing 2022-01-17 11:35:41 -04:00
Rekai Nyangadzayi Musuka c0d956ea95 feat(cpu): implement MVN 2022-01-17 11:30:59 -04:00
Rekai Nyangadzayi Musuka 1025500407 chore(cpu): refactor barrel shifter 2022-01-17 11:17:04 -04:00
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 3596caf106 Merge branch 'main' of ssh://musuka.dev:2222/paoda/zba 2022-01-11 02:36:37 -04:00
Rekai Nyangadzayi Musuka 3be084cb82 chore: ignores for building on windows 2022-01-11 01:42:26 -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