--- np2/io/gdc_sub.c	2004/02/18 03:56:57	1.12
+++ np2/io/gdc_sub.c	2004/02/20 15:20:30	1.15
@@ -20,6 +20,8 @@ typedef struct {
 	SINT16	y2;
 } VECTDIR;
 
+const UINT32 gdcplaneseg[4] = {VRAM_E, VRAM_B, VRAM_R, VRAM_G};
+
 static	UINT16	gdc_rt[RT_TABLEMAX+1];
 
 static const VECTDIR vectdir[16] = {
@@ -85,7 +87,7 @@ REG8 gdcbitreverse(REG8 data) {
 #endif
 
 
-void gdcsub_init(void) {
+void gdcsub_initialize(void) {
 
 	int		i;
 
@@ -107,11 +109,11 @@ static void calc_gdcslavewait(UINT dots)
 	SINT32	clk;
 
 	clk = dots;
-	if (pccore.baseclock != PCBASECLOCK20) {
-		clk *= 27648;
+	if (pccore.cpumode & CPUMODE_8MHZ) {
+		clk *= 22464;
 	}
 	else {
-		clk *= 22464;
+		clk *= 27648;
 	}
 	clk *= pccore.multiple;
 	clk /= 15625;
@@ -546,7 +548,7 @@ void gdcsub_write(void) {
 	}
 	gdcs.grphdisp |= (BYTE)updatebit;
 
-	ptr += vramplaneseg[(adrs >> 14) & 3];
+	ptr += gdcplaneseg[(adrs >> 14) & 3];
 	adrs = (adrs & 0x3fff) << 1;
 	calc_gdcslavewait(leng);