diff --git a/Source/HBIOS/tms.asm b/Source/HBIOS/tms.asm
index 13e62d8f..e9c0255c 100644
--- a/Source/HBIOS/tms.asm
+++ b/Source/HBIOS/tms.asm
@@ -475,21 +475,27 @@ TMS_PROBE:
 	; WRITE TEST PATTERN TO FIRST TWO BYTES
 	LD	A,$A5			; FIRST BYTE
 	OUT	(TMS_DATREG),A		; OUTPUT
-	TMS_IODELAY			; DELAY
+	;TMS_IODELAY			; DELAY
+	CALL	DLY64			; DELAY
 	CPL				; COMPLEMENT ACCUM
 	OUT	(TMS_DATREG),A		; SECOND BYTE
-	TMS_IODELAY			; DELAY
+	;TMS_IODELAY			; DELAY
+	CALL	DLY64			; DELAY
 	; SET READ ADDRESS TO $0
 	LD	HL,0
 	CALL	TMS_RD
 	; READ TEST PATTERN
 	LD	C,$A5			; VALUE TO EXPECT
 	IN	A,(TMS_DATREG)		; READ FIRST BYTE
-	TMS_IODELAY			; DELAY
+	;CALL	PRTHEXBYTE
+	;TMS_IODELAY			; DELAY
+	CALL	DLY64			; DELAY
 	CP	C			; COMPARE
 	RET	NZ			; RETURN ON MISCOMPARE
 	IN	A,(TMS_DATREG)		; READ SECOND BYTE
-	TMS_IODELAY			; DELAY
+	;CALL	PRTHEXBYTE
+	;TMS_IODELAY			; DELAY
+	CALL	DLY64			; DELAY
 	CPL				; COMPLEMENT IT
 	CP	C			; COMPARE
 	RET				; RETURN WITH RESULT IN Z
@@ -524,6 +530,13 @@ TMS_CRTINIT2:
 	INC	HL			; POINT TO NEXT VALUE
 	INC	C			; POINT TO NEXT REGISTER
 	DJNZ	TMS_CRTINIT2		; LOOP
+;
+	; ENABLE WAIT SIGNAL IF 9938/58
+#IF ((TMSMODE == TMSMODE_MSX9958) | (TMSMODE == TMSMODE_MBC))
+	LD	C,25			; REGISTER 25
+	LD	A,%00000100		; ONLY WTE BIT SET
+	CALL	TMS_SET			; DO IT
+#ENDIF
     	RET
 ;
 ;----------------------------------------------------------------------
diff --git a/Source/ver.inc b/Source/ver.inc
index a6e12d2b..a28e2b6c 100644
--- a/Source/ver.inc
+++ b/Source/ver.inc
@@ -2,4 +2,4 @@
 #DEFINE	RMN	1
 #DEFINE	RUP	1
 #DEFINE	RTP	0
-#DEFINE BIOSVER	"3.1.1-pre.189"
+#DEFINE BIOSVER	"3.1.1-pre.190"
diff --git a/Source/ver.lib b/Source/ver.lib
index 01536076..21ab6b99 100644
--- a/Source/ver.lib
+++ b/Source/ver.lib
@@ -3,5 +3,5 @@ rmn	equ	1
 rup	equ	1
 rtp	equ	0
 biosver	macro
-	db	"3.1.1-pre.189"
+	db	"3.1.1-pre.190"
 	endm