added support for the Commander X16 memory layout

c64/aliases/,aliases_config.s

@@ -14,6 +14,9 @@
 #if CONFIG_PLATFORM_COMMODORE_64
 	.eval selected++
 #endif
+#if CONFIG_PLATFORM_COMMANDER_X16
+	.eval selected++
+#endif
 
 	.if (selected != 1) .error "Please select exactly one CONFIG_PLATFORM_* option" 
 }

c64/aliases/,aliases_cpu.s

@@ -34,7 +34,7 @@
 .pseudocommand panic code
 {
 	// If case no panic screen is used, we can skip providing error codes within Kernal
-#if CONFIG_PANIC_SCREEN || !SEGMENT_KERNAL
+#if CONFIG_PANIC_SCREEN
 	lda code
 #endif
 	jmp ($E4B7)
@@ -117,7 +117,7 @@
 
 .pseudocommand lda_zero                // WARNING: do not use within interrupts
 {
-#if HAS_OPCODES_65C02
+#if HAS_OPCODES_65CE02
 	tba
 #else
 	lda #$00

c64/aliases/,aliases_rom_basic.s

@@ -1,4 +1,15 @@
 
 	// BASIC startup vectors
+
+
+#if ROM_LAYOUT_X16
+
+	.label IBASIC_COLD_START  = $C000
+	.label IBASIC_WARM_START  = $C002
+
+#else
+
 	.label IBASIC_COLD_START  = $A000
 	.label IBASIC_WARM_START  = $A002
+
+#endif