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463 Commits

Author SHA1 Message Date
Rekai Nyangadzayi Musuka 1456d0f317 chore(bios): allow reading from BIOS 2022-01-25 10:32:28 -04:00
Rekai Nyangadzayi Musuka 6257418405 fix(cpu): interim solution to weird program counter behaviour on illegal tst instruction 2022-01-25 09:23:32 -04:00
Rekai Nyangadzayi Musuka 985fefb9f6 chore(cpu): implement behaviour for undefined test instruction 2022-01-25 08:05:42 -04:00
Rekai Nyangadzayi Musuka 95dd3e3df8 fix(cpu): fix PC offset when barrel shifter and bit 4 of DP is set 2022-01-24 17:52:01 -04:00
Rekai Nyangadzayi Musuka 038c0a9283 chore: remove reccomended extension 2022-01-23 23:13:16 -04:00
Rekai Nyangadzayi Musuka 702ff288d8 fix(cpu): implement S set + rd == 15 case for data processing 2022-01-19 07:46:49 -04:00
Rekai Nyangadzayi Musuka bf36a23722 feat(cpu): implement banked registers 2022-01-19 07:29:49 -04:00
Rekai Nyangadzayi Musuka fc5a3460dd fix(cpu): improve MRS and MSR instructions 2022-01-18 20:17:00 -04:00
Rekai Nyangadzayi Musuka 6177927049 feat(cpu): implement CMN 2022-01-18 15:09:25 -04:00
Rekai Nyangadzayi Musuka 903b75c7c4 fix(barrel_shifter): fix PC being 1 word ahead in barrel shifter 2022-01-18 15:08:29 -04:00
Rekai Nyangadzayi Musuka 8d786cbe25 feat(cpu): Implement RSC 2022-01-18 14:46:57 -04:00
Rekai Nyangadzayi Musuka 212bc9e11d feat(cpu): implement RSB 2022-01-18 14:36:03 -04:00
Rekai Nyangadzayi Musuka 63a57ac954 feat(cpu): implement BIC 2022-01-18 14:28:47 -04:00
Rekai Nyangadzayi Musuka 85dae5e1d7 feat(cpu): implement EOR 2022-01-18 14:27:07 -04:00
Rekai Nyangadzayi Musuka 6189bf0315 feat(cpu): implement ADD 2022-01-18 14:25:29 -04:00
Rekai Nyangadzayi Musuka 2f3213f693 feat(cpu): implement fix for ADC and implement SBC 2022-01-18 14:20:01 -04:00
Rekai Nyangadzayi Musuka a62cd9aa40 chore(barrel_shifter): remove panic from ASR 2022-01-18 14:19:58 -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