startup banner support cleanup

src/basic/assets/startup_banner.s

@@ -0,0 +1,65 @@
+// #LAYOUT# STD *       #TAKE
+// #LAYOUT# X16 BASIC_0 #TAKE
+// #LAYOUT# *   *       #IGNORE
+
+//
+// Startup banner, to be displayed during cold start
+//
+
+.encoding "petscii_upper"
+
+
+.macro BANNER_TEXT() {
+
+#if CONFIG_BRAND_CUSTOM_BUILD
+	.text "OPEN ROMS "
+	.text CONFIG_CUSTOM_BRAND
+#elif CONFIG_BRAND_GENERIC
+	.text "OPEN ROMS GENERIC BUILD"
+#elif CONFIG_BRAND_TESTING
+	.text "OPEN ROMS TESTING BUILD"
+#elif CONFIG_BRAND_ULTIMATE_64
+	.text "OPEN ROMS FOR ULTIMATE 64"
+#endif
+
+}
+
+startup_banner:
+
+#if CONFIG_BANNER_SIMPLE
+
+	.text "    " 
+	BANNER_TEXT()
+	.byte $00
+
+#elif CONFIG_BANNER_FANCY
+
+	BANNER_TEXT()
+	.byte $00
+
+rainbow_logo:
+
+{
+	.var SET_COLOR_0 = $05
+	.var SET_COLOR_1 = $1C
+	.var SET_COLOR_2 = $9E
+	.var SET_COLOR_3 = $1E
+	.var SET_COLOR_4 = $9F
+
+	.byte SET_COLOR_1, $12, $A4, $A4, $A4, $A4, $A4, $A4, $A4, $0D
+    .byte SET_COLOR_2, $12, $A4, $A4, $A4, $A4, $A4, $A4, $0D
+    .byte SET_COLOR_3, $12, $A4, $A4, $A4, $A4, $A4, $0D
+    .byte SET_COLOR_4, $12, $A4, $A4, $A4, $A4, $92
+    .byte SET_COLOR_0, $00
+}
+
+#if !CONFIG_BRAND_CUSTOM_BUILD
+
+pre_revision_string:
+
+	.text "RELEASE "
+	.byte $00
+
+#endif // no CONFIG_BRAND_CUSTOM_BUILD
+
+#endif