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28 lines
497 B
ArmAsm
28 lines
497 B
ArmAsm
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; Oliver Schmidt, 2012-10-21
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;
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; unsigned char getcurrentdevice (void);
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;
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.export _getcurrentdevice
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.import __dos_type
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.include "mli.inc"
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_getcurrentdevice:
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; Use unit number of most recent accessed device
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lda DEVNUM
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lsr
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lsr
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lsr
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lsr
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; Check for ProDOS 8
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ldx __dos_type
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bne :+
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lda #$FF ; INVALID_DEVICE
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: ldx #$00
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rts
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