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fix a certain pattern of ipc register writes which was breaking devkitpro touch input

This commit is contained in:
zeromus 2009-06-09 23:14:26 +00:00
parent 53aaa6850f
commit 3cf5ec430a
1 changed files with 4 additions and 2 deletions
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6
desmume/src/MMU.cpp
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@ -1302,13 +1302,15 @@ static INLINE void MMU_IPCSync(u8 proc, u32 val)
u32 sync_l = T1ReadLong(MMU.MMU_MEM[proc][0x40], 0x180) & 0xFFFF;
u32 sync_r = T1ReadLong(MMU.MMU_MEM[proc^1][0x40], 0x180) & 0xFFFF;
sync_l = ( sync_l & 0x600F ) | ( val & 0x0F00 );
sync_l = ( sync_l & 0x000F ) | ( val & 0x0F00 );
sync_r = ( sync_r & 0x6F00 ) | ( (val >> 8) & 0x000F );
sync_l |= val & 0x6000;
T1WriteLong(MMU.MMU_MEM[proc][0x40], 0x180, sync_l);
T1WriteLong(MMU.MMU_MEM[proc^1][0x40], 0x180, sync_r);
if ((val & 0x2000) && (sync_r & 0x4000))
if ((sync_l & 0x2000) && (sync_r & 0x4000))
setIF(proc^1, ( 1 << 16 ));
}