add msbasic

msbasic/defines_osi.s

@@ -0,0 +1,37 @@
+; configuration
+CONFIG_10A := 1
+
+CONFIG_DATAFLG := 1
+CONFIG_NULL := 1
+CONFIG_PRINT_CR := 1 ; print CR when line end reached
+CONFIG_SCRTCH_ORDER := 3
+CONFIG_SMALL := 1
+
+; zero page
+ZP_START1 = $00
+ZP_START2 = $0D
+ZP_START3 = $5B
+ZP_START4 = $65
+
+;extra ZP variables
+USR             := $000A
+
+; constants
+STACK_TOP		:= $FC
+SPACE_FOR_GOSUB := $33
+NULL_MAX		:= $0A
+WIDTH			:= 72
+WIDTH2			:= 56
+
+; memory layout
+RAMSTART2		:= $0300
+
+; magic memory locations
+L0200           := $0200
+
+; monitor functions
+MONRDKEY        := $FFEB
+MONCOUT         := $FFEE
+MONISCNTC       := $FFF1
+LOAD            := $FFF4
+SAVE            := $FFF7