--- np2/bios/bios18.c	2004/02/29 07:36:56	1.28
+++ np2/bios/bios18.c	2004/03/04 15:20:13	1.30
@@ -300,9 +300,9 @@ const CRTDATA	*p;
 			gdc_analogext(TRUE);
 			mem[MEMB_PRXDUPD] |= 0x80;
 			crt = 4;
-			master = 3;
+			master = 3 + (scrn & 3);
 			slave = 1;
-			gdc.display |= 0x10;
+			gdc.analog |= (1 << GDCANALOG_256E);
 		}
 		else
 #endif
@@ -335,10 +335,10 @@ const CRTDATA	*p;
 			gdc_analogext(FALSE);
 			mem[MEMB_PRXDUPD] &= ~0x80;
 		}
+		gdc.analog &= ~(1 << (GDCANALOG_256E));
 #endif
 	}
 	crt += (scrn & 3);
-	master += (scrn & 3);
 
 	if (rate & 4) {
 		gdc.display |= (1 << GDCDISP_31);
@@ -754,7 +754,7 @@ void bios0x18(void) {
 	}		tmp;
 	int		i;
 
-#if 1
+#if 0
 	TRACEOUT(("int18 AX=%.4x %.4x:%.4x", CPU_AX,
 							i286_memword_read(CPU_SS, CPU_SP+2),
 							i286_memword_read(CPU_SS, CPU_SP)));