AUTOIDE.ASM: old CF bug fix

src/bios/exp/EXTENDED/IDE/ATA_DRV.ASM

@@ -285,6 +285,7 @@ ATA_5x_LONG_WRITE:
 		JP	ATA_5x_LONG_READ.shared
 
 ;ÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛ;
+; !TODO ¯®¤¤¥à¦ª  8-bit data transfer mode ¤«ï ¤à¥¢­¨å ¢¨­â®¢
 ;	A - Disk
 ;   HL:IX - Sector
 ;      DE - Address

src/bios/rom/SETUP/AUTOIDE.asm

@@ -763,13 +763,20 @@ DETECTORS:
 		DEC	HL
 		LD	A,H
 		OR	L
-		SCF
-		RET	Z			; Absent
+		;SCF
+		;RET	Z			; Absent
+		JR	Z,.nop_exit
 		;
 		CALL	SKIPKEY
 		RET	C			; Skipped = Absent
 		;
 		JR	.loop
+		;
+.nop_exit:	IN	A,(C)
+		CP	IDE.CtrlByte.Ready + IDE.CtrlByte.SeekComplete
+		RET	Z			; old CF bug fix
+		SCF
+		RET				; Absent
 ;-------;
 
 ;-------;