Last change
on this file since 341 was
203,
checked in by gregli@…, 12 years ago
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Reworked the 'skip detecting the slave if there was no master' code to be more complete (includes configurator drives) and to take into account int13h/25h calls. Some of the changes in my last checkin have been rolled back as a result (they are no longer needed). I did take a byte out of RAMVARS, but there was an alignment byte available for the taking. I also added a perl script for padding and adding the checksum byte to a binary image, which can be invoked manually or with 'make checksum'.
|
File size:
1.3 KB
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Line | |
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1 | @rem = '--*-Perl-*-- |
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2 | @echo off |
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3 | perl -x -S %0 %1 %2 %3 %4 %5 %6 %7 %8 %9 |
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4 | goto endofperl |
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5 | @rem '; |
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6 | #!perl |
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7 | # |
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8 | # Add checksum byte to ROM image |
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9 | # |
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10 | # Use a size of 0 to skip this script entirely (file is not modified) |
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11 | # |
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12 | # On Windows, this file can be renamed to a batch file and invoked directly (for example, "c:\>checksum file size") |
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13 | # |
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14 | |
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15 | ($ARGV[0] ne "" && $ARGV[1] ne "") || die "usage: checksum filename size\n"; |
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16 | |
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17 | $desiredSize = int($ARGV[1]); |
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18 | |
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19 | if( $desiredSize == 0 ) |
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20 | { |
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21 | exit( 0 ); |
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22 | } |
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23 | |
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24 | open FILE, "+<".$ARGV[0] || die "file not found\n"; |
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25 | binmode FILE; |
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26 | $cs = 0; |
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27 | $last = 0; |
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28 | $bytes = 0; |
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29 | while( ($n = read( FILE, $d, 1 )) != 0 ) |
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30 | { |
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31 | $cs = $cs + ord($d); |
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32 | $cs = $cs % 256; |
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33 | $bytes = $bytes + 1; |
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34 | } |
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35 | $oldBytes = $bytes; |
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36 | |
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37 | if( $bytes > $desiredSize - 1 ) |
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38 | { |
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39 | die "ERROR: image is bigger than ".($desiredSize-1).": $bytes\n"; |
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40 | } |
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41 | |
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42 | $fixzero = chr(0); |
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43 | while( $bytes < $desiredSize - 1 ) |
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44 | { |
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45 | print FILE $fixzero; |
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46 | $bytes++; |
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47 | } |
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48 | |
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49 | $fixl = ($cs == 0 ? 0 : 256 - $cs); |
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50 | $fix = chr($fixl); |
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51 | print FILE $fix; |
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52 | |
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53 | close FILE; |
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54 | |
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55 | open FILE, "<".$ARGV[0]; |
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56 | binmode FILE; |
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57 | $cs = 0; |
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58 | $newBytes = 0; |
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59 | while( ($n = read( FILE, $d, 1 )) != 0 ) |
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60 | { |
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61 | $cs = $cs + ord($d); |
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62 | $cs = $cs % 256; |
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63 | $newBytes++; |
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64 | } |
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65 | $cs == 0 || die "Checksum verification failed\n"; |
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66 | |
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67 | print "checksum: ".$ARGV[0].": $oldBytes bytes before, $newBytes bytes after\n"; |
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68 | |
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69 | __DATA__ |
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70 | :endofperl |
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