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fox32rom: Make the event stack pointer comparison more understandable

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ry755 2022-01-30 00:38:58 -08:00 committed by Ry
parent acf024611b
commit 7c3794ed45
1 changed files with 4 additions and 4 deletions
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8
event.asm
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@ -21,8 +21,8 @@ wait_for_event:
halt
; check the event stack pointer
; if equal to 0x01FFFFFC, then the event stack is empty
cmp [event_stack_pointer], 0x01FFFFFC
; if equal to its base address, then the event stack is empty
cmp [event_stack_pointer], event_stack_pointer
ifz jmp wait_for_event
; an event is available in the event stack, pop it from the stack and return it
@ -62,8 +62,8 @@ push_event:
; r1-r5: event parameters
pop_event:
; check the event stack pointer
; if equal to 0x01FFFFFC, then the event stack is empty
cmp [event_stack_pointer], 0x01FFFFFC
; if equal to its base address, then the event stack is empty
cmp [event_stack_pointer], event_stack_pointer
ifz jmp pop_event_empty
icl