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25 lines
460 B
ArmAsm
25 lines
460 B
ArmAsm
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; Ullrich von Bassewitz, 23.11.2002
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; CC65 runtime: Convert char in ax into a long
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.export aulong, along
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.importzp sreg
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; Convert A from char to long in EAX
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aulong: ldx #0
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stx sreg
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stx sreg+1
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rts
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along: cmp #$80 ; Positive?
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bcc aulong ; Yes, handle like unsigned type
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ldx #$ff
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stx sreg
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stx sreg+1
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rts
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