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21 lines
475 B
ArmAsm
21 lines
475 B
ArmAsm
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; Ullrich von Bassewitz, 22.11.2002
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; IOBASE replacement function
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.export IOBASE
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.include "plus4.inc"
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.segment "LOWCODE" ; Must go into low memory
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.proc IOBASE
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sta ENABLE_ROM ; Enable the ROM
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jsr $FFF3 ; Call the ROM routine
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sta ENABLE_RAM ; Switch back to RAM
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rts ; Return to caller
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.endproc
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