diff --git a/Source/HBIOS/Config/FZ80_std.asm b/Source/HBIOS/Config/FZ80_std.asm
index 8ca0722e..bc8c1fad 100644
--- a/Source/HBIOS/Config/FZ80_std.asm
+++ b/Source/HBIOS/Config/FZ80_std.asm
@@ -25,3 +25,6 @@
 #DEFINE	BOOT_DEFAULT	"H"		; DEFAULT BOOT LOADER CMD ON <CR> OR AUTO BOOT
 ;
 #include "cfg_fz80.asm"
+;
+CPUOSC		.SET	8000000		; CPU OSC FREQ IN MHZ
+CRTACT		.SET	TRUE		; ACTIVATE CRT (VDU,CVDU,PROPIO,ETC) AT STARTUP
diff --git a/Source/HBIOS/hbios.asm b/Source/HBIOS/hbios.asm
index 79d3fb42..3822e5bb 100644
--- a/Source/HBIOS/hbios.asm
+++ b/Source/HBIOS/hbios.asm
@@ -3256,6 +3256,12 @@ HB_WDZ:
 	AND	%00000001		; ISOLATE CONSOLE BIT
 	JR	NZ,INITSYS3		; NOT SET, BYPASS CONSOLE SWITCH
   #ENDIF
+;
+  #IF (PLATFORM == PLT_FZ80)
+	IN	A,($36)			; GET IO BYTE
+	AND	%00000001		; ISOLATE CONSOLE BIT
+	JR	Z,INITSYS3		; NOT SET, BYPASS CONSOLE SWITCH
+  #ENDIF
 ;
 	LD	A,(CB_CRTDEV)		; GET CRT DISPLAY DEVICE
 	LD	(HB_NEWCON),A		; AND QUEUE TO SWITCH
diff --git a/Source/HBIOS/scon.asm b/Source/HBIOS/scon.asm
index 6969686f..bf8f2857 100644
--- a/Source/HBIOS/scon.asm
+++ b/Source/HBIOS/scon.asm
@@ -5,7 +5,7 @@
 ;
 ; TODO:
 ;
-SCON_IOBASE	.EQU	$00
+SCON_IOBASE	.EQU	$0000			; NOTE: 16-BIT I/O
 ;
 SCON_STATUS	.EQU	SCON_IOBASE
 SCON_DATA	.EQU	SCON_IOBASE + 1
@@ -25,6 +25,9 @@ SCON_ROWS	.EQU	40
 SCON_INIT:
 	CALL	NEWLINE
 	PRTS("SCON:$")
+	PRTS(" IO=0x$")			; FORMATTING
+	LD	A,SCON_IOBASE
+	CALL	PRTHEXBYTE
 ;
 	; DISPLAY CONSOLE DIMENSIONS
 	CALL	PC_SPACE
@@ -68,7 +71,8 @@ SCON_IN:
 	CALL	SCON_IST		; CHECK FOR CHAR PENDING
 	JR	Z,SCON_IN		; WAIT FOR IT IF NECESSARY
 	;IN0	A,(SCON_DATA)		; READ THE CHAR FROM PROPIO
-	IN	A,(SCON_DATA)		; READ THE CHAR FROM PROPIO
+	LD	BC,SCON_DATA		; DATA PORT (16 BIT I/O)
+	IN	A,(C)			; READ THE CHAR FROM PROPIO
 	LD	E,A
 	RET
 ;
@@ -76,7 +80,8 @@ SCON_IN:
 ;
 SCON_IST:
 	;IN0	A,(SCON_STATUS)		; READ LINE STATUS REGISTER
-	IN	A,(SCON_STATUS)		; READ LINE STATUS REGISTER
+	LD	BC,SCON_STATUS		; STATUS PORT (16-BIT I/O)
+	IN	A,(C)			; READ LINE STATUS REGISTER
 	AND	SCON_KBDRDY		; ISOLATE KBDRDY
 	JP	Z,CIO_IDLE		; RETURN VIA IDLE PROCESSING
 	OR	$FF			; SET A=$FF TO SIGNAL READY
@@ -89,14 +94,16 @@ SCON_OUT:
 	JR	Z,SCON_OUT		; WAIT IF NECESSARY
 	LD	A,E			; RECOVER THE CHAR TO WRITE
 	;OUT0	(SCON_DATA),A		; WRITE THE CHAR TO PROPIO
-	OUT	(SCON_DATA),A		; WRITE THE CHAR TO PROPIO
+	LD	BC,SCON_DATA		; DATA PORT (16 BIT I/O)
+	OUT	(C),A			; WRITE THE CHAR TO PROPIO
 	RET
 ;
 ;
 ;
 SCON_OST:
 	;IN0	A,(SCON_STATUS)		; READ LINE STATUS REGISTER
-	IN	A,(SCON_STATUS)		; READ LINE STATUS REGISTER
+	LD	BC,SCON_STATUS		; STATUS PORT (16-BIT I/O)
+	IN	A,(C)			; READ LINE STATUS REGISTER
 	AND	SCON_DSPRDY 		; ISOLATE DSPRDY
 	JP	Z,CIO_IDLE		; RETURN VIA IDLE PROCESSING
 	OR	$FF			; SET A=$FF TO SIGNAL READY
diff --git a/Source/HBIOS/sser.asm b/Source/HBIOS/sser.asm
index de51f598..726b83e7 100644
--- a/Source/HBIOS/sser.asm
+++ b/Source/HBIOS/sser.asm
@@ -4,16 +4,6 @@
 ;==================================================================================================
 ;
 ; TODO:
-;
-;;;;SSER_IOBASE	.EQU	$34
-;;;;;
-;;;;SSER_STATUS	.EQU	SSER_IOBASE
-;;;;SSER_DATA	.EQU	SSER_IOBASE + 1
-;;;;;
-;;;;SSER_IRDY	.EQU	%00000001
-;;;;SSER_IINV	.EQU	FALSE
-;;;;SSER_ORDY	.EQU	%00000010
-;;;;SSER_OINV	.EQU	TRUE
 ;
 		DEVECHO	"SSER: IO="
 		DEVECHO	SSERSTATUS
@@ -37,8 +27,8 @@ SSER_PREINIT:
 ;
 SSER_INIT:
 	CALL	NEWLINE
-	PRTS("SSER$")
-	PRTS(": IO=0x$")		; FORMATTING
+	PRTS("SSER:$")
+	PRTS(" IO=0x$")			; FORMATTING
 	LD	A,SSERSTATUS
 	CALL	PRTHEXBYTE
 ;
diff --git a/Source/ver.inc b/Source/ver.inc
index 0697f711..9510c20e 100644
--- a/Source/ver.inc
+++ b/Source/ver.inc
@@ -2,7 +2,7 @@
 #DEFINE	RMN	5
 #DEFINE	RUP	0
 #DEFINE	RTP	0
-#DEFINE BIOSVER	"3.5.0-dev.49"
+#DEFINE BIOSVER	"3.5.0-dev.50"
 #define rmj	RMJ
 #define rmn	RMN
 #define rup	RUP
diff --git a/Source/ver.lib b/Source/ver.lib
index cad0ea50..ec7a738f 100644
--- a/Source/ver.lib
+++ b/Source/ver.lib
@@ -3,5 +3,5 @@ rmn	equ	5
 rup	equ	0
 rtp	equ	0
 biosver	macro
-	db	"3.5.0-dev.49"
+	db	"3.5.0-dev.50"
 	endm