Commit Graph

262 Commits

Author SHA1 Message Date
Rekai Nyangadzayi Musuka 3623362f72 chore: improve accuracy of thread sleep in emu thread 2022-03-14 08:54:48 -03:00
Rekai Nyangadzayi Musuka c538079ad4 feat: implement video sync 2022-03-14 05:16:02 -03:00
Rekai Nyangadzayi Musuka 8e3f48837d chore: organize io switch statements 2022-03-13 07:50:19 -03:00
Rekai Nyangadzayi Musuka 025f295c08 fix: mirror SRAM
SRAM is mirrored in 64K chunks
TODO: According to GBATEK SRAM chips are 32K and mirrored
2022-03-13 05:53:32 -03:00
Rekai Nyangadzayi Musuka 017ec407f5 chore: don't panic on unknown bus and io writes/reads
This will lead to emulation bugs due to devices I've yet to implement but by
doing this a lot of games become playable "by default" such as Doom or
Kirby: Nightmare in Dream Land.

When implementing feature and/or debuggin make sure to set:
panic_on_und_bus and panic_on_und_io to true so that the emu crashes
on unknown reads/writes
2022-03-13 05:39:09 -03:00
Rekai Nyangadzayi Musuka 4a76611fca feat: implement Timers 2022-03-13 05:35:01 -03:00
Rekai Nyangadzayi Musuka cb10dfbdfd fix: implement sprite coord overflow behaviour 2022-03-12 03:46:41 -04:00
Rekai Nyangadzayi Musuka 0c50ef1e6d fix: resolve issues with sprite mirroring 2022-03-11 23:52:56 -04:00
Rekai Nyangadzayi Musuka 05e67da181 feat: Implement MVP of Mode 0 Sprites 2022-03-11 01:43:47 -04:00
Rekai Nyangadzayi Musuka f1df3d6615 chore: clean up io 2022-03-04 22:55:04 -04:00
Rekai Nyangadzayi Musuka c5b4b51ae0 feat: fix tile flipping issue 2022-03-03 03:08:35 -04:00
Rekai Nyangadzayi Musuka 2e4854c2ff chore: add some type definitions for sprites 2022-03-03 02:10:33 -04:00
Rekai Nyangadzayi Musuka 85f0b13f4a feat: improve DMA Transfer support 2022-03-03 02:10:29 -04:00
Rekai Nyangadzayi Musuka dccd00782b chore(ppu): resolve integer overflow regression 2022-03-02 23:15:10 -04:00
Rekai Nyangadzayi Musuka 3d8c944bcc feat(ppu): implement bg priority and transparency 2022-03-02 01:39:05 -04:00
Rekai Nyangadzayi Musuka 90302d1c52 chore: update README.md 2022-03-01 21:30:29 -04:00
Rekai Nyangadzayi Musuka cb4d3a9a51 chore: replace unnecessarily complex sign extension implementation 2022-02-28 20:38:50 -04:00
Rekai Nyangadzayi Musuka ddb68a7952 feat: pass beeg yoshi 2022-02-28 18:24:24 -04:00
Rekai Nyangadzayi Musuka 97de5d1a96 fix: palette id is a u16 not a u8 2022-02-28 17:32:10 -04:00
Rekai Nyangadzayi Musuka d6ef53fd67 feat: DMA Transfer MVP 2022-02-28 12:34:00 -06:00
Rekai Nyangadzayi Musuka b65f833b28 feat(ppu): implement transparency + backdrop in mode 0 2022-02-26 18:33:16 -06:00
Rekai Nyangadzayi Musuka ac0486be1b chore(io): replace some bitfields with enums 2022-02-24 17:20:23 -06:00
Rekai Nyangadzayi Musuka 441ebc38c7 fix: better emulate behaviour of IO reads 2022-02-24 17:20:20 -06:00
Rekai Nyangadzayi Musuka be2dfb379a chore: document select unimplmented I/O registers
These registers are written to / read from Kirby: Nightmare in Dream Land
2022-02-22 17:14:30 -06:00
Rekai Nyangadzayi Musuka bc66be6c06 feat: impelement a barebones SRAM 2022-02-22 17:14:26 -06:00
Rekai Nyangadzayi Musuka 5368ff912d feat: pass retAddr.gba 2022-02-21 15:34:46 -06:00
Rekai Nyangadzayi Musuka c2cf2d2965 feat: implement Hblank and Vcount Interrupts
Also implemented unique behaviour when writing to IF
2022-02-21 14:45:47 -06:00
Rekai Nyangadzayi Musuka e5ab8b51a9 chore: improve Bus log + panic messages 2022-02-19 11:48:43 -05:00
Rekai Nyangadzayi Musuka c767e88e8d chore: improve io.zig 2022-02-19 11:48:17 -05:00
Rekai Nyangadzayi Musuka 9e2e8c3d1a feat: implement mirroring for IWRAM EWRAM, OAM and PALRAM
Also realized I confused IWRAM and EWRAM. This is also fixed
TODO: Implemnt Mirroring for VRRAM
2022-02-19 10:08:31 -05:00
Rekai Nyangadzayi Musuka e426f2459e fix: resolve integer overflow in BG0 Drawing 2022-02-19 06:55:30 -04:00
Rekai Nyangadzayi Musuka 3746cf6025 chore: don't panic on 32-bit I/O 2022-02-19 06:45:39 -04:00
Rekai Nyangadzayi Musuka f6c8d7ca07 chore: stub CPU HALTing 2022-02-17 00:27:34 -04:00
Rekai Nyangadzayi Musuka 07343efdf3 chore: correct logic errors in map size 1 and 3 2022-02-16 23:49:08 -04:00
Rekai Nyangadzayi Musuka 4018f3875b chore: properly write to VOFS and HOFS in 32-bit bus 2022-02-16 23:23:41 -04:00
Rekai Nyangadzayi Musuka 034f2e8d1d feat: implement hofs and vofs on io bus 2022-02-16 04:29:04 -04:00
Rekai Nyangadzayi Musuka d275a4890f feat: implement scrolling 2022-02-16 03:37:25 -04:00
Rekai Nyangadzayi Musuka ce97a52868 feat: add support for multiple BGs in Mode 0 2022-02-16 03:27:06 -04:00
Rekai Nyangadzayi Musuka d2d4667f7b feat: document mode 0 2022-02-16 03:05:19 -04:00
Rekai Nyangadzayi Musuka 5835b509e4 feat: Mode 0 MVP 2022-02-16 02:27:15 -04:00
Rekai Nyangadzayi Musuka 338122ed43 chore: use zig slices for fun 2022-02-13 05:28:56 -04:00
Rekai Nyangadzayi Musuka e5a76a3c02 chore: give DISPCNT DISPSTAT and VCOUNT to PPU struct 2022-02-13 04:28:15 -04:00
Rekai Nyangadzayi Musuka 31fa06ac4a chore: give io read/write functions access to the entire Bus 2022-02-13 04:13:06 -04:00
Rekai Nyangadzayi Musuka ec25a9aae4 feat: implement BG Scrolling Registers 2022-02-13 04:04:10 -04:00
Rekai Nyangadzayi Musuka b238a3e8f3 feat: impelemnt BG0,1,2CNT and IF 2022-02-13 03:23:09 -04:00
Rekai Nyangadzayi Musuka aca7fc9a60 feat: implement OAM 2022-02-13 02:30:02 -04:00
Rekai Nyangadzayi Musuka d2740e30d9 chore: squash bugs preventing swi_demo.gba from working 2022-02-13 02:29:53 -04:00
Rekai Nyangadzayi Musuka 8ab7a178c1 chore(cpu): reimplement bank switching logic 2022-02-12 04:33:32 -04:00
Rekai Nyangadzayi Musuka d897c2fdcc fix: don't mask away MSB in THUMB.5 add 2022-02-12 03:23:55 -04:00
Rekai Nyangadzayi Musuka 783706193b fix: properly decode format 11 instructions 2022-02-12 03:13:38 -04:00