44 Commits

Author SHA1 Message Date
f039c891c7 feat: Initial Implementation of DMA Audio 2022-10-21 05:12:33 -03:00
d4aac22e34 chore: rewrite I/O read/writes 2022-10-21 05:12:33 -03:00
b6d2084c96 chore: run zigfmt 2022-10-21 05:12:32 -03:00
f12800f2d0 chore: stub more apu I/O addresses 2022-10-21 05:12:30 -03:00
2d16e4a4e6 chore: move DMA and Timers from io to bus 2022-10-21 05:12:28 -03:00
bb9dc45e0c feat: define APU registers 2022-10-21 05:12:27 -03:00
a768d28e7c chore: organize io switch statements 2022-10-21 05:12:26 -03:00
61d6288fec 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
2022-10-21 05:12:26 -03:00
e3e45cd129 feat: implement Timers 2022-10-21 05:12:26 -03:00
d54e593276 chore: clean up io 2022-10-21 05:12:25 -03:00
9455ffe837 feat: pass beeg yoshi 2022-10-21 05:12:24 -03:00
02572dd15c feat: DMA Transfer MVP 2022-10-21 05:12:23 -03:00
4885a86833 chore(io): replace some bitfields with enums 2022-10-21 05:12:23 -03:00
fd9ffb20b4 fix: better emulate behaviour of IO reads 2022-10-21 05:12:23 -03:00
56ef2b077a chore: document select unimplmented I/O registers
These registers are written to / read from Kirby: Nightmare in Dream Land
2022-10-21 05:12:23 -03:00
d30a4d7ee5 feat: implement Hblank and Vcount Interrupts
Also implemented unique behaviour when writing to IF
2022-10-21 05:12:22 -03:00
0f74e4fcf9 chore: improve io.zig 2022-10-21 05:12:22 -03:00
acf1a10f91 chore: don't panic on 32-bit I/O 2022-10-21 05:12:21 -03:00
606f9b959a chore: stub CPU HALTing 2022-10-21 05:12:21 -03:00
2a3d0c8b0d chore: properly write to VOFS and HOFS in 32-bit bus 2022-10-21 05:12:21 -03:00
4405fa6bbf feat: implement hofs and vofs on io bus 2022-10-21 05:12:21 -03:00
08e4eb1bf1 feat: add support for multiple BGs in Mode 0 2022-10-21 05:12:20 -03:00
f4b176a813 feat: document mode 0 2022-10-21 05:12:20 -03:00
fab6d4c2a2 chore: give DISPCNT DISPSTAT and VCOUNT to PPU struct 2022-10-21 05:12:20 -03:00
223a3403c0 chore: give io read/write functions access to the entire Bus 2022-10-21 05:12:20 -03:00
dfd0d064de feat: implement BG Scrolling Registers 2022-10-21 05:12:19 -03:00
0c4882e658 feat: impelemnt BG0,1,2CNT and IF 2022-10-21 05:12:19 -03:00
8006ca31e6 chore: remove unnecessary @as calls 2022-10-21 05:12:16 -03:00
4776dc0788 Revert "fix: allow for 32-bit reads to KEYINPUT"
This reverts commit 3a51707280bcb35f3397c8a6da8441f95629bf07.
2022-10-21 05:12:14 -03:00
b569a32170 fix: allow for 32-bit reads to KEYINPUT 2022-10-21 05:12:14 -03:00
e0e43eece5 fix: no buttons are pressed by default 2022-10-21 05:12:09 -03:00
8b7223cf35 chore: stub KeyInput I/O register 2022-10-21 05:12:07 -03:00
14d5160674 fix: allow 32-bit writes to DISPCNT 2022-10-21 05:12:07 -03:00
52493831cc chore(io): implement IE and IME 2022-10-21 05:11:54 -03:00
670347d4a0 feat(bus): implement IWRAM and EWRAM 2022-10-21 05:11:53 -03:00
caa799853e feat(bus): have VCOUNT be addressable on the bus 2022-10-21 05:11:52 -03:00
d6aafc61bd chore(io): rename some io bitfield fields 2022-10-21 05:11:52 -03:00
036b861b05 chore: code cleanup 2022-10-21 05:11:50 -03:00
a9e7140a88 chore(io): alias @This() to Self in io.zig 2022-10-21 05:11:50 -03:00
9d1229fe0c feat: implement PPU Timings in Scheduler 2022-10-21 05:11:49 -03:00
47805fb60c feat(bus): implement Palette RAM and DISPSTAT 2022-10-21 05:11:48 -03:00
4836ea3bcf fix(io): fix DISPCNT is at wrong IO address 2022-10-21 05:11:46 -03:00
c6de540c8a feat(cpu): implement skipBios method 2022-10-21 05:11:46 -03:00
cbcc6282df feat(bus): add Io Struct
Also, add more information to all panic messages
2022-10-21 05:11:46 -03:00