shithub: sms

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Use the vdp register names

--- a/dat.h

+++ b/dat.h

@@ -27,6 +27,7 @@

 	PWNT    = 0x03,

 	PBNT    = 0x04,

 	SPRTAB  = 0x05,

+	SPRADDR = 0x06,

 	BGCOL   = 0x07,

 	HORSCR  = 0x08,

 	VERSCR  = 0x09,

--- a/vdp.c

+++ b/vdp.c

@@ -91,7 +91,7 @@

 			break;

 		int y = vram[spridx] + 1;

-		int h = (reg[1] & 1 << 1) != 0 ? 16 : 8;

+		int h = (reg[MODE2] & 1 << 1) != 0 ? 16 : 8;

 		if(vdpy >= y && vdpy < y+h && y > 1){

 			if(bufidx >= 8){

@@ -111,7 +111,7 @@

 {

 	uint16_t t1 = (reg[SPRTAB] << 7 & 0x3f00);

 	uint16_t t2 = t1 + 0x80;

-	uint16_t t3 = (reg[6] << 11) & 0x2000;

+	uint16_t t3 = (reg[SPRADDR] << 11) & 0x2000;

 	for(int i = 7; i >= 0; i--){

 		if(sprlst[i] < 0) continue;

@@ -121,10 +121,10 @@

 		int y = vram[spridx] + 1;

 		uint16_t info = t2 + (spr << 1);

 		int x = vram[info];

-		int h = (reg[1] & 1 << 1) != 0 ? 16 : 8;

+		int h = (reg[MODE2] & 1 << 1) != 0 ? 16 : 8;

 		int t = vram[info + 1];

-		t &= (reg[1] & 1 << 1) != 0 ? 0xfe : 0xff;

+		t &= (reg[MODE2] & 1 << 1) != 0 ? 0xfe : 0xff;

 		int taddr = t3 + (t << 5) +  ((vdpy - y) << 2);

 		for(int xx = 0; xx < 8; xx++){

-- 

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