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games/snes: small hdma fix

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aiju 2014-03-15 00:57:03 +01:00
parent d1822db187
commit 77a3391cf3
1 changed files with 7 additions and 4 deletions
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11
sys/src/games/snes/mem.c
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@ -486,7 +486,7 @@ hdmastep(void)
{
int i, j, cyc;
u8int *p, *q, n, m, b, v, c;
u32int a;
u32int a, br;
cyc = 0;
if(dma != 0)
@ -502,12 +502,15 @@ hdmastep(void)
if((hdma & (1<<(16+i))) != 0){
n = nbytes[c & 7];
m = modes[c & 7];
if((c & 0x40) != 0)
if((c & 0x40) != 0){
q = p + 5;
else
br = p[7] << 16;
}else{
q = p + 8;
br = p[4] << 16;
}
for(j = 0; j < n; j++){
a = q[0] | q[1] << 8 | p[4] << 16;
a = q[0] | q[1] << 8 | br;
b = p[1] + (m & 3);
if((c & 0x80) != 0){
v = dmavalid(b, 1) ? memread(0x2100 | b) : 0;