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| 1 | #!/bin/sh
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| 2 | #
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| 3 | # a.out2com - Minix a.out to DOS .COM Author: Kees J. Bot
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| 4 | # 17 Jun 1995
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| 5 | # Transform a Minix a.out to the COM format of MS-DOS,
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| 6 | # the executable must be common I&D with 256 scratch bytes at the start of
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| 7 | # the text segment to make space for the Program Segment Prefix. The Minix
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| 8 | # a.out header and these 256 bytes are removed to make a COM file.
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| 9 |
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| 10 | case $# in
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| 11 | 2) aout="$1"
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| 12 | com="$2"
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| 13 | ;;
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| 14 | *) echo "Usage: $0 <a.out> <dos.com>" >&2
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| 15 | exit 1
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| 16 | esac
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| 17 |
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| 18 | size "$aout" >/dev/null || exit
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| 19 | set `size "$aout" | sed 1d`
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| 20 | count=`expr \( $1 + $2 - 256 + 31 \) / 32`
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| 21 |
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| 22 | exec dd if="$aout" of="$com" bs=32 skip=9 count=$count conv=silent
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| 23 |
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| 24 | #
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| 25 | # $PchId: a.out2com,v 1.3 1998/08/01 09:13:01 philip Exp $
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