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76 Commits

Author SHA1 Message Date
Rekai Nyangadzayi Musuka f7680cd824 feat(cpu): implement branch and exchange 
If I want to continue with armwrestler, I'll have to implement
THUMB instructions now
 2022-01-12 07:14:41 -04:00
Rekai Nyangadzayi Musuka 9860294329 fix(cpu): make Data Processing instructions r15-aware 2022-01-12 06:54:22 -04:00
Rekai Nyangadzayi Musuka 22cab0210b fix(cpu): make LDRH and STRH aware of r15 2022-01-12 06:26:10 -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
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