Add recommended baud rate

Source/HBIOS/updater.asm

@@ -764,26 +764,48 @@ VERF:	POP	BC			; EXIT WITH FAIL
 	POP	BC			; FAIL MESSAGE AND 
 	JP	FAILWF			; RETURN TO MENU
 ;
-OPTIONG:LD	HL,msgChangeNow
-	CALL	PRTSTR0
-	LD	A,(RECSPD)
-;	CALL	PRTHEXB
-	CALL	DECBAUD
+OPTIONG:LD	HL,msgChangeNow		; CHANGE
+	CALL	PRTSTR0			; SERIAL
+	LD	A,(RECSPD)		; DEVICE 
+	PUSH	AF			; BAUD RATE
+	CALL	DECBAUD			; TO RECOMMENDED
 	LD	HL,msgPressKey
 	CALL	PRTSTR0
+	POP	AF
+	CALL	CHGSPD
 	CALL	GETINP	
 	JP	MENULP	
 ;
-OPTIONL:LD	HL,msgChangeNow
-	CALL	PRTSTR0
-	LD	A,(ORISPD)
-;	CALL	PRTHEXB
-	CALL	DECBAUD
+OPTIONL:LD	HL,msgChangeNow		; CHANGE
+	CALL	PRTSTR0			; SERIAL
+	LD	A,(ORISPD)		; DEVICE
+	PUSH	AF			; BAUD RATE
+	CALL	DECBAUD			; TO ORIGINAL
 	LD	HL,msgPressKey
 	CALL	PRTSTR0
+	POP	AF
+	CALL	CHGSPD	
 	CALL	GETINP	
 	JP	MENULP	
 ;
+CHGSPD:	PUSH	AF
+	LD	B,$05			; GET SERIAL DEVICE 
+	LD	A,(SERDEV)		; CHARACTERISTICS
+	LD	C,A
+	RST	08
+	LD	A,D			; MASK OUT EXISTING
+	AND	%11100000		; REPLACE WITH RATE
+	LD	D,A
+	POP	AF
+	OR	D
+	LD	D,A
+;	
+	LD	B,$04			; SET NEW
+	LD	A,(SERDEV)		; SPEED
+	LD	C,A
+	RST	08
+	RET
+;
 OPTIONV:LD	A,(WRTVER)		; TOGGLE
 	CPL				; VERIFY
 	LD	(WRTVER),A		; FLAG