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annotate lib/alib/datestr.as @ 2852:f2e92661b4c6 lwtools-port

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Makefiles: Always use macro for lwar and rm The LWAR macro is new, rm was still used in one place.
author Tormod Volden <debian.tormod@gmail.com>
date Fri, 12 Jul 2013 22:41:18 +0200
parents 03f26e88b809
children
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1 *****************************************
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2
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3 * Convert a date to a string. This can be used
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4 * for converting the system time as well as
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5 * modify/create dates from files. The date must
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6 * be 6 bytes -- null pad file dates.
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9 * OTHER MODULES NEEDED: BIN_ASC
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11 * ENTRY: X=binary date
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12 * Y=buffer for ascii
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14 * EXIT: all registers preserved (except cc)
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16 nam Get ASCII Date
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17 ttl Assembler Library Module
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20 section .text
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21
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22 DATESTR:
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23 pshs d,x,y,u
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24 leau delims,pcr
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25
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26 loop
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27 bsr get1 convert a byte
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28 lda ,u+ get next delimiter
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29 sta ,y+ add to ascii buffer
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30 bne loop not end yet
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31 puls d,x,y,u,pc
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33 get1
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34 ldb ,x+ get next byte to convert
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35 clra only doing one byte value
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36 pshs x save ptr to date packet
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37 leas -8,s buffer for ascii number
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38 tfr s,x
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39 lbsr BIN_DEC convert
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40 ldd ,x get ascii
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41 tstb 1byte number?
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42 bne get2 no
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43 tfr a,b
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44 lda #'0 leading "0"
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46 get2
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47 std ,y++ to buffer
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48 leas 8,s
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49 puls x,pc
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51 delims
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52 fcc '// ::'
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53 fcb 0
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55 endsect
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56 t