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games/c64: writes to I/O area do not affect underlying memory (documentation lied)

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aiju 2015-04-01 12:49:59 +02:00
parent 2d0088598b
commit 86bfd0331d
1 changed files with 4 additions and 1 deletions
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5
sys/src/games/c64/mem.c
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@ -280,8 +280,11 @@ memread(u16int a)
void
memwrite(u16int a, u8int v)
{
if(a >> 12 == 13 && !((pla & (HIRAM|LORAM)) == 0 || pla == 1 || (pla & CHAREN) == 0 && (pla & (EXROM|GAME)) != EXROM))
if(a >> 12 == 13 && !((pla & (HIRAM|LORAM)) == 0 || pla == 1 || (pla & CHAREN) == 0 && (pla & (EXROM|GAME)) != EXROM)){
miowrite(a & 0xfff, v);
io();
return;
}
ram[a] = v;
if(a == 1)
pla = pla & ~7 | v & 7;