efd99f16e0
fix: mirror SRAM
...
SRAM is mirrored in 64K chunks
TODO: According to GBATEK SRAM chips are 32K and mirrored
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
15191aedca
fix: implement sprite coord overflow behaviour
2022-10-21 05:12:26 -03:00
63486f13f2
fix: resolve issues with sprite mirroring
2022-10-21 05:12:25 -03:00
17455e40d1
feat: Implement MVP of Mode 0 Sprites
2022-10-21 05:12:25 -03:00
d54e593276
chore: clean up io
2022-10-21 05:12:25 -03:00
c6a544a824
feat: fix tile flipping issue
2022-10-21 05:12:25 -03:00
e3ae3635bc
chore: add some type definitions for sprites
2022-10-21 05:12:25 -03:00
6723bfb364
feat: improve DMA Transfer support
2022-10-21 05:12:25 -03:00
12c628e82c
chore(ppu): resolve integer overflow regression
2022-10-21 05:12:24 -03:00
5f9abf69d3
feat(ppu): implement bg priority and transparency
2022-10-21 05:12:24 -03:00
351a687a2d
chore: update README.md
2022-10-21 05:12:24 -03:00
68b0601a42
chore: replace unnecessarily complex sign extension implementation
2022-10-21 05:12:24 -03:00
9455ffe837
feat: pass beeg yoshi
2022-10-21 05:12:24 -03:00
02d2ff3e0c
fix: palette id is a u16 not a u8
2022-10-21 05:12:24 -03:00
02572dd15c
feat: DMA Transfer MVP
2022-10-21 05:12:23 -03:00
6d253cc74e
feat(ppu): implement transparency + backdrop in mode 0
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
d4c7cfdf8b
feat: impelement a barebones SRAM
2022-10-21 05:12:23 -03:00
4d75d156e5
feat: pass retAddr.gba
2022-10-21 05:12:22 -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
d1fce8ba75
chore: improve Bus log + panic messages
2022-10-21 05:12:22 -03:00
0f74e4fcf9
chore: improve io.zig
2022-10-21 05:12:22 -03:00
4afcbd0957
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
2022-10-21 05:12:22 -03:00
50dc31447d
fix: resolve integer overflow in BG0 Drawing
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
f19b42baf3
chore: correct logic errors in map size 1 and 3
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
e2b2bf882a
feat: implement scrolling
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
efc7d817db
feat: Mode 0 MVP
2022-10-21 05:12:20 -03:00
1b17b1eb0c
chore: use zig slices for fun
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
bfdad9fa32
feat: implement OAM
2022-10-21 05:12:19 -03:00
37fd8dab84
chore: squash bugs preventing swi_demo.gba from working
2022-10-21 05:12:19 -03:00
c143aefb01
chore(cpu): reimplement bank switching logic
2022-10-21 05:12:19 -03:00
05bf245b5a
fix: don't mask away MSB in THUMB.5 add
2022-10-21 05:12:19 -03:00
f9e7128061
fix: properly decode format 11 instructions
2022-10-21 05:12:18 -03:00
603e4b6fdf
chore: make use of scoped logging
2022-10-21 05:12:18 -03:00
9ed37340cc
Merge branch 'main' of ssh://musuka.dev:2222/paoda/zba
2022-10-21 05:12:18 -03:00
599a1f2973
chore: remove TODOs and some useless imports
2022-10-21 05:12:18 -03:00
