initial concept of ROM versioning, still needs quite some work

c64/basic/bf52.rom_revision_basic.s

@@ -0,0 +1,25 @@
+
+//
+// !!! PROPOSAL ONLY !!! PROPOSAL ONLY !!! NOT FOR USING EXTERNALLY YET !!!
+//
+//
+// Do not change! Locations of the following data should be constant - now and forever!
+//
+// If you want to integrate Open ROMs support in your emulator, FPGA ccomputer, etc. - this
+// is the official way to recognize the ROM and it's revision.
+//
+
+
+rom_revision_basic:
+
+	// $BF52
+
+	.text "OR"               // Magic string, after "Open ROMs"
+	.byte CONFIG_ID          // Config file ID, might change between revisions
+
+rom_revision_basic_string:
+
+	.text "DEVEL SNAPSHOT"   // Actual ROM revision string
+	.byte $00
+
+__rom_revision_basic_end: