devraza/rustboyadvance-ng
Archived
1
Fork 0
Code Issues Pull requests Packages Projects Releases 1 Wiki Activity

bugfix: Fix improper write to DISPSTAT register

Browse source 
For some reason, probably typing mistkae, I `or`ed the value being written to DISPSTAT,
causing bits to never actually turn off, affectivly making HBLANK/VBLANK
interrupts linger forever.

This probably has caused some nasty glitches that I don't even know of, but two confirm issues solved
by this are Mariokart and Pacman.

This commit fixes #14 and #13


Former-commit-id: 72ad6efcb9e8f6b582d9279c5daab2603d5a408e
This commit is contained in:
Michel Heily 2020-02-16 01:46:51 +02:00
parent 392ad1bd71
commit c96fa38a2d
1 changed files with 1 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
src/core/iodev.rs
View file

@ -121,7 +121,7 @@ impl Bus for IoDevices {
let io_addr = addr + IO_BASE;
match io_addr {
REG_DISPCNT => io.gpu.dispcnt.0 = value,
REG_DISPSTAT => io.gpu.dispstat.0 |= value & !3,
REG_DISPSTAT => io.gpu.dispstat.0 = value & !3,
REG_BG0CNT => io.gpu.backgrounds[0].bgcnt.0 = value,
REG_BG1CNT => io.gpu.backgrounds[1].bgcnt.0 = value,
REG_BG2CNT => io.gpu.backgrounds[2].bgcnt.0 = value,