22 lines
379 B
ArmAsm
Executable file
22 lines
379 B
ArmAsm
Executable file
! outsb() - Output a byte array Author: Kees J. Bot
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! 18 Mar 1996
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! void outsb(U16_t port, void *buf, size_t count);
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.sect .text
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.define _outsb
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_outsb:
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push bp
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mov bp, sp
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cld
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push si
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mov dx, 4(bp) ! port
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mov si, 6(bp) ! buf
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mov cx, 8(bp) ! byte count
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jcxz 1f
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0: lodsb ! read 1 byte
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outb dx ! output 1 byte
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loop 0b ! many times
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1: pop si
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pop bp
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ret
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