add msbasic

msbasic/defines_cbm1.s

@@ -0,0 +1,54 @@
+; configuration
+; oldest known version, no CONFIG_n
+
+CONFIG_CBM_ALL := 1
+CONFIG_CBM1_PATCHES := 1 ; ** don't turn off! **
+
+CONFIG_DATAFLG := 1
+CONFIG_FILE := 1; support PRINT#, INPUT#, GET#, CMD
+CONFIG_NO_CR := 1; terminal doesn't need explicit CRs on line ends
+CONFIG_NO_LINE_EDITING := 1; support for "@", "_", BEL etc.
+CONFIG_PRINTNULLS := 1; whether PRINTNULLS does anything
+CONFIG_SCRTCH_ORDER := 2
+
+; zero page
+ZP_START1 = $00
+ZP_START2 = $04
+ZP_START3 = $5A
+ZP_START4 = $65
+
+; extra ZP variables
+CURDVC			:= $0003
+TISTR			:= $0200
+Z96				:= $020C
+USR				:= GORESTART
+
+; constants
+SPACE_FOR_GOSUB := $36
+STACK_TOP		:= $FC
+NULL_MAX		:= $0A
+MAX_EXPON		:= 12 ; XXX override
+
+RAMSTART2		:= $0400
+
+; magic memory locations
+ENTROPY = $9044
+
+; monitor functions
+OPEN	:= $FFC0
+CLOSE	:= $FFC3
+CHKIN	:= $FFC6
+CHKOUT	:= $FFC9
+CLRCH	:= $FFCC
+CHRIN	:= $FFCF
+CHROUT	:= $FFD2
+LOAD	:= $FFD5
+SAVE	:= $FFD8
+VERIFY	:= $FFDB
+SYS		:= $FFDE
+ISCNTC	:= $FFE1
+GETIN	:= $FFE4
+CLALL	:= $FFE7
+LE7F3	:= $E7F3; for CBM1
+MONCOUT	:= CHROUT
+MONRDKEY := GETIN