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annotate lib/alib/bin_hex.as @ 3278:ea1afb494127

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defs: Add Bt.Sec for atari and corsham
author Tormod Volden <debian.tormod@gmail.com>
date Sat, 07 Mar 2020 23:52:40 +0100
parents 03f26e88b809
children
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1 ********************************************
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2 *
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3 * Binary to hexadecimal convertor
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4 *
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5 * This subroutine will convert the binary value in
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6 * 'D' to a 4 digit hexadecimal ascii string.
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9 * OTHER MODULES NEEDED: BIN2HEX
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11 * ENTRY: D=value to convert
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12 * X=buffer for hex string-null terminated
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14 * EXIT all registers (except CC) preserved.
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16 nam Convert # to Hex String
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17 ttl Assembler Library Module
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20 section .text
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22 BIN_HEX:
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23 pshs d,x
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24 ldb ,s
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25 lbsr BIN2HEX convert 1 byte
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26 std ,x++
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27 ldb 1,s
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28 lbsr BIN2HEX convert 2nd byte
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29 std ,x++
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30 clr ,x term with null
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31 puls d,x
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33 endsect
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