add files for BASIC interpretor main loop and message printing

c64/basic/basic_do_error.s

@@ -0,0 +1,39 @@
+	;; Compute's Mapping the 64 p93
+
+basic_do_error:
+
+
+
+
+
+
+basic_error_messages:
+	.byte "TOO MANY FILES",0
+	.byte "FILE OPEN",0
+	.byte "FILE NOT OPEN",0
+	.byte "FILE NOT FOUND",0
+	.byte "DEVICE NOT PRESENT",0
+	.byte "NOT INPUT FILE",0
+	.byte "NOT OUTPUT FILE",0
+	.byte "MISSING FILENAME",0
+	.byte "ILLEGAL DEVICE NUMBER",0
+	.byte "NEXT WITHOUT FOR",0
+	.byte "SYNTAX",0
+	.byte "RETURN WITHOUT GOSUB",0
+	.byte "OUT OF DATA",0
+	.byte "ILLEGAL QUANTITY",0
+	.byte "OVERFLOW",0
+	.byte "OUT OF MEMORY",0
+	.byte "UNDEF'D STATEMENT",0
+	.byte "BAD SUBSCRIPT",0
+	.byte "REDIM'D ARRAY",0
+	.byte "DIVISION BY ZERO",0
+	.byte "ILLEGAL DIRECT",0
+	.byte "TYPE MISMATCH",0
+	.byte "STRING TOO LONG",0
+	.byte "FILE DATA",0
+	.byte "FORMULA TOO COMPLEX",0
+	.byte "CAN'T CONTINUE",0
+	.byte "UNDEF'D FUNCTION",0
+	.byte "VERIFY",0
+	.byte "LOAD",0