shithub: riscv

Info  •  Files  •  Log  •  Branches

games/snes: bug fixes

--- a/sys/src/games/snes/mem.c

+++ b/sys/src/games/snes/mem.c

@@ -342,7 +342,7 @@

 		vtime = vtime & 0xff | (v & 1) << 8;

 		break;

 	case 0x420b:

-		dma |= v & ~reg[0x420c];

+		dma |= v & ~(reg[0x420c] & ~hdma >> 24);

 		break;

 	case 0x4210:

 		return;

--- a/sys/src/games/snes/ppu.c

+++ b/sys/src/games/snes/ppu.c

@@ -280,8 +280,8 @@

 	p->t = tile(n, p->tx, p->ty);

 	chr(n, nb, p->sz, p->t, p->tnx, p->tny, p->c);

 	p->pal = palette(n, p->t >> 10 & 7);

-	if(p->tnx != 0)

-		shift(p->c, nb, p->tnx, p->t & 0x4000);

+	if((p->tnx & 7) != 0)

+		shift(p->c, nb, p->tnx & 7, p->t & 0x4000);

 	if(p->msz != 1 && p->mx != 0 && sx % p->msz == 0){

 		p->mv = bgpixel(p->c, nb, p->t & 0x4000);

 		if(p->tnx + p->mx >= 8){