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27 lines
399 B
ArmAsm
27 lines
399 B
ArmAsm
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;
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; Ullrich von Bassewitz, 19.11.2002
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;
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; The kernal open routines do not return a carry on error, so check the IEEE
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; status, set carry flag and return
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;
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.export checkst
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.include "pet.inc"
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.proc checkst
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lda ST
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beq @L1
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lda #5 ; ### Device not present
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sec
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rts
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@L1: clc
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rts
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.endproc
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