add msbasic

msbasic/defines_sym1.s

@@ -0,0 +1,57 @@
+; configuration
+CONFIG_2A := 1
+
+CONFIG_NULL := 1
+CONFIG_PRINT_CR := 1 ; print CR when line end reached
+CONFIG_SAFE_NAMENOTFOUND := 1
+CONFIG_SCRTCH_ORDER := 1
+CONFIG_PEEK_SAVE_LINNUM := 1
+CONFIG_SMALL_ERROR := 1
+
+; zero page
+ZP_START1 = $00
+ZP_START2 = $18
+ZP_START3 = $0d
+ZP_START4 = $66
+
+;extra ZP variables
+USR             := $0A
+TXPSV			:= LASTOP
+ZD3             := $D3
+ZD4             := $D4
+
+GET      := IQERR
+COS      := USR1
+SIN      := USR1
+TAN      := USR1
+ATN      := USR1
+
+; inputbuffer
+INPUTBUFFER     := $001E
+
+; constants
+STACK_TOP		:= $FE
+SPACE_FOR_GOSUB := $3E
+NULL_MAX		:= $F0
+CRLF_1 := CR
+CRLF_2 := LF
+WIDTH			:= 72
+WIDTH2			:= 56
+
+; memory layout
+RAMSTART2	:= $0200
+
+; monitor functions
+ASCNIB   := $8275
+INSTAT   := $8386
+MONRDKEY := $8A1B
+MONCOUT  := $8A47
+ACCESS   := $8B86
+L8C78    := $8C78
+DUMPT    := $8E87
+
+P3L      := $A64A
+P3H      := P3L+1
+P2L      := $A64C
+P2H      := P2L+1
+P1L      := $A64E