added support for the Commander X16 memory layout

c64/kernal/interrupts/ea31.default_irq_handler.s

@@ -44,5 +44,13 @@ default_irq_handler_end_tape:
 #endif // CONFIG_TAPE_NORMAL || CONFIG_TAPE_TURBO
 
 
+#if CONFIG_PLATFORM_COMMODORE_64
+
 	// Acknowledge CIA interrupt and return
 	jmp clear_cia1_interrupt_flag_and_return_from_interrupt
+
+#else
+
+	jmp return_from_interrupt
+
+#endif

c64/kernal/interrupts/ea7e.ack_cia1_return_from_interrupt.s

@@ -1,4 +1,5 @@
 // #LAYOUT# STD *        #TAKE
+// #LAYOUT# X16 *        #IGNORE
 // #LAYOUT# *   KERNAL_0 #TAKE
 // #LAYOUT# *   *        #IGNORE
 

c64/kernal/interrupts/fe66.default_brk_handler.s

@@ -9,9 +9,13 @@ default_brk_handler:
 
 	sei // disable IRQs, to be sure they wont interfere
 
+#if CONFIG_PLATFORM_COMMODORE_64
+
 	ldx #$00
 	sta VIC_SCROLX // turn the display off - we want as little screen artifacts as possible
 
+#endif
+
 	cld // make sure this dangerous flag is disabled
 
 	jsr JRESTOR