more work on external BASIC ROM support

c64/basic/board_m65/4000.mega65_vectable_basic_1.s

@@ -0,0 +1,35 @@
+// #LAYOUT# M65 BASIC_0 #TAKE-FLOAT
+// #LAYOUT# M65 BASIC_1 #TAKE
+// #LAYOUT# *   *       #IGNORE
+
+//
+// Definitions for communication with Mega65 segment BASIC_1 from BASIC_0
+//
+
+
+#if SEGMENT_BASIC_0
+
+	// Label definitions
+
+	.label VB1__TEST                   = $4000 + 2 * 0
+
+TEST:
+
+	jsr map_BASIC_1
+	jmp (VB1__TEST)
+
+#else
+
+	// Vector table (OpenROMs private!)
+
+	.word TEST
+
+
+TEST:
+
+	inc 53280
+	inc 53281
+
+	jmp map_NORMAL
+
+#endif