diff --git a/Source/HBIOS/hbios.asm b/Source/HBIOS/hbios.asm
index cff99f0a..d7b066c3 100644
--- a/Source/HBIOS/hbios.asm
+++ b/Source/HBIOS/hbios.asm
@@ -1588,8 +1588,7 @@ HB_CPU2:
 #ENDIF
 ;
 #IF (KIOENABLE)
-	LD	A,%11111001	; RESET ALL DEVICES, SET DAISYCHAIN
-	OUT	(KIOBASE+$0E),A	; DO IT
+	CALL	KIO_PREINIT
 #ENDIF
 ;
 #IF (CTCENABLE)
@@ -2239,6 +2238,9 @@ HB_PCINITTBLLEN	.EQU	(($ - HB_PCINITTBL) / 2)
 ;==================================================================================================
 ;
 HB_INITTBL:
+#IF (KIOENABLE)
+	.DW	KIO_INIT
+#ENDIF
 #IF (CTCENABLE)
 	.DW	CTC_INIT
 #ENDIF
@@ -4794,6 +4796,14 @@ SIZ_UF	.EQU	$ - ORG_UF
 		.ECHO	SIZ_UF
 		.ECHO	" bytes.\n"
 #ENDIF
+#IF (KIOENABLE)
+ORG_KIO	.EQU	$
+  #INCLUDE "kio.asm"
+SIZ_KIO	.EQU	$ - ORG_KIO
+		.ECHO	"KIO occupies "
+		.ECHO	SIZ_KIO
+		.ECHO	" bytes.\n"
+#ENDIF
 #IF (CTCENABLE)
 ORG_CTC	.EQU	$
   #INCLUDE "ctc.asm"
diff --git a/Source/HBIOS/kio.asm b/Source/HBIOS/kio.asm
new file mode 100644
index 00000000..8c7867c7
--- /dev/null
+++ b/Source/HBIOS/kio.asm
@@ -0,0 +1,92 @@
+;___KIO________________________________________________________________________________________________________________
+;
+; Z80 KIO
+;
+;   DISPLAY CONFIGURATION DETAILS
+;______________________________________________________________________________________________________________________
+;
+;
+;
+KIO_PIOADAT	.EQU	KIOBASE + $00
+KIO_PIOACMD	.EQU	KIOBASE + $01
+KIO_PIOBDAT	.EQU	KIOBASE + $02
+KIO_PIOBCMD	.EQU	KIOBASE + $03
+KIO_CTC0	.EQU	KIOBASE + $04
+KIO_CTC1	.EQU	KIOBASE + $05
+KIO_CTC2	.EQU	KIOBASE + $06
+KIO_CTC3	.EQU	KIOBASE + $07
+KIO_SIOADAT	.EQU	KIOBASE + $08
+KIO_SIOACMD	.EQU	KIOBASE + $09
+KIO_SIOBDAT	.EQU	KIOBASE + $0A
+KIO_SIOBCMD	.EQU	KIOBASE + $0B
+KIO_PIACDAT	.EQU	KIOBASE + $0C
+KIO_PIACCMD	.EQU	KIOBASE + $0D
+KIO_KIOCMD	.EQU	KIOBASE + $0E
+KIO_KIOCMDB	.EQU	KIOBASE + $0F
+;
+;
+;
+KIO_PREINIT:
+	CALL	KIO_DETECT
+	RET	NZ
+;
+	; RECORD PRESENCE
+	LD	A,$FF
+	LD	(KIO_EXISTS),A
+	; INITIALIZE KIO
+	LD	A,%11111001	; RESET ALL DEVICES, SET DAISYCHAIN
+	OUT	(KIO_KIOCMD),A	; DO IT
+;
+	XOR	A
+	RET
+;
+;
+;
+KIO_INIT:
+	; ANNOUNCE PORT
+	CALL	NEWLINE			; FORMATTING
+	PRTS("KIO:$")			; FORMATTING
+;
+	PRTS(" IO=0x$")			; FORMATTING
+	LD	A,KIOBASE		; GET BASE PORT
+	CALL	PRTHEXBYTE		; PRINT BASE PORT
+;
+	LD	A,(KIO_EXISTS)
+	OR	A
+	JR	Z,KIO_INIT2
+;	
+	PRTS(" ENABLED$")		; DISPLAY ENABLED
+	XOR	A			; SIGNAL SUCCESS
+	RET				; DONE
+;
+KIO_INIT2:
+	PRTS(" NOT PRESENT$")		; NOT ZERO, H/W NOT PRESENT
+	OR	$FF			; SIGNAL FAILURE
+	RET				; BAIL OUT
+;
+;
+;
+KIO_DETECT:
+	LD	C,KIO_SIOBCMD	; USE SIOB COMMAND PORT
+	LD	B,2		; SIO REG 2
+;
+	OUT	(C),B
+	XOR	A		; ZERO
+	OUT	(C),A		; WRITE IT
+	OUT	(C),B
+	IN	A,(C)
+	AND	$F0		; TOP NIBBLE ONLY
+	RET	NZ		; FAIL IF NOT ZERO
+;	
+	OUT	(C),B
+	LD	A,$FF		; $FF
+	OUT	(C),A		; WRITE IT
+	OUT	(C),B
+	IN	A,(C)
+	AND	$F0		; TOP NIBBLE ONLY
+	CP	$F0		; COMPARE
+	RET			; DONE, Z IF FOUND, NZ IF MISCOMPARE
+;
+;
+;
+KIO_EXISTS	.DB	0
diff --git a/Source/ver.inc b/Source/ver.inc
index 07caab2b..3a709f3a 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.80"
+#DEFINE BIOSVER	"3.1.1-pre.81"
diff --git a/Source/ver.lib b/Source/ver.lib
index bd153311..e7006998 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.80"
+	db	"3.1.1-pre.81"
 	endm