shithub: sms

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Honor bit 5 to blank the left column

--- a/vdp.c

+++ b/vdp.c

@@ -46,7 +46,15 @@

 	if(ext224)

 		screenmap |= 0x700;

-	int y = vdpy + reg[VERSCR];

+	if((reg[MODE1] & 1 << 5) && vdpx < 8){

+		int c = (reg[BGCOL] & 0x0f) + 16;

+		pixeldraw(vdpx, vdpy, cramc[c]);

+		return;

+	}

+

+	int y = vdpy;

+	if(!((reg[MODE1] & 1 << 7) && vdpx >= 192))

+		y += reg[VERSCR];

 	if(ext224)

 		y &= 0xff;

 	else if(y >= 224)

-- 

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