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21 lines
223 B
ArmAsm
21 lines
223 B
ArmAsm
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; Stefan Haubenthal, Jul 12 2003
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;
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; unsigned char get_ostype(void)
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;
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; $23 ProDOS 2.0.3
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;
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.export _get_ostype
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.proc _get_ostype
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lda #0
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ldx $bf00
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cpx #$4c ; JMP opcode
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bne nopdos
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lda $bfff
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nopdos: rts
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.endproc
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