36 lines
422 B
ArmAsm
36 lines
422 B
ArmAsm
.define .outch1,.outch2,.inch1,.inch2
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.sect .text
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.sect .rom
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.sect .data
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.sect .bss
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! a0,d0 used
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! character in d1
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.sect .text
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.inch1:
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move.l #acia1,a0
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bra .inch
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.inch2:
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move.l #acia2,a0
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.inch:
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move.b (a0),d1
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asr #1,d1
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bcc .inch
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move.b 2(a0),d1
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and #0x7f,d1
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rts
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.outch1:
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move.l #acia1,a0
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bra .outch
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.outch2:
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move.l #acia2,a0
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.outch:
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move.b (a0),d0
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asr #2,d0
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bcc .outch
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move.b d1,2(a0)
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rts
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.align 2
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