Add Config defaults for multiplatform SIO

Source/HBIOS/cfg_rc.asm

@@ -23,10 +23,16 @@ DSRTCMODE	.EQU	DSRTCMODE_STD	; DSRTCMODE_STD, DSRTCMODE_MFPIC
 ASCIENABLE	.EQU	FALSE		; TRUE FOR Z180 ASCI SUPPORT
 UARTENABLE	.EQU	FALSE		; TRUE FOR UART SUPPORT (ALMOST ALWAYS WANT THIS TO BE TRUE)
 UARTOSC		.EQU	1843200		; UART OSC FREQUENCY
-SIOENABLE	.EQU	TRUE		; TRUE FOR ZILOG SIO/2 SUPPORT
-SIOMODE		.EQU	SIOMODE_RC	; SIOMODE_RC, SIOMODE_SMB
 ACIAENABLE	.EQU	TRUE		; TRUE FOR MOTOROLA 6850 ACIA SUPPORT
 ;
+SIOENABLE	.EQU	TRUE		; TRUE FOR ZILOG SIO SUPPORT									;PS 
+SIOMODE		.EQU	SIOMODE_RC	; SIOMODE_RC, SIOMODE_SMB, SIOMODE_ZP							;PS
+DEFSIOACFG	.EQU	DEFSERCFG	; DEFAULT SERIAL LINE CONFIG								;PS
+DEFSIOBCFG	.EQU	DEFSERCFG	; DEFAULT SERIAL LINE CONFIG								;PS
+DEFSIODIV	.EQU	1			; 1=RC2014/SMB, 2/4/8/16/32/64/128/256=ZP depending on jumper X5    ;PS
+DEFSIOCLK	.EQU	CPUOSC		; 2457600/4915200=ZP,7372800=RC/SMB - SIO FIXED OSC FREQUENCY		;PS
+SIODEBUG	.EQU	FALSE		;PS
+;
 VDUENABLE	.EQU	FALSE		; TRUE FOR VDU BOARD SUPPORT
 CVDUENABLE	.EQU	FALSE		; TRUE FOR CVDU BOARD SUPPORT
 NECENABLE	.EQU	FALSE		; TRUE FOR uPD7220 BOARD SUPPORT