diff --git a/src/interrupts.s b/src/interrupts.s
index 587b697..40f2dc6 100644
--- a/src/interrupts.s
+++ b/src/interrupts.s
@@ -21,10 +21,12 @@ irq_enter	.macro
 	.endm
 
 irq_exit	.macro
+	sta long:tmp_register_a
 	tsc
 	sta long:internal_stack_pointer
 	lda long:external_stack_pointer
 	tcs
+	lda long:tmp_register_a
 	pld
 	plb
 	rti
@@ -81,6 +83,8 @@ cop_handler_native:
 
 	; Now, we do an indirect, indexed jump through the jump table.
 	jsr (cop_jump_table,x)
+
+	; And we're done.
 	irq_exit
 
 cop_jump_table:
@@ -89,8 +93,10 @@ cop_jump_table:
 
 ; -----------------------------------------------------------------------------
 
+	.extern __program_start
+
 cop_reset:
-	rts
+	jmp long:__program_start
 
 ; -----------------------------------------------------------------------------