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Disassembled Compaq BIOS can now be reassembled

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Jeff Parsons 2015-04-06 16:02:27 -07:00 • committed by jeffpar
commit fd323fc9c7
4 changed files with 14396 additions and 15195 deletions
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28508
devices/pc/bios/compaq/deskpro386/1988-01-28.nasm
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12
devices/pc/bios/compaq/deskpro386/README.md
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@ -67,15 +67,13 @@ Producing Source Code with NDISASM
---
From the current directory, I ran:
ndisasm -o0x8000 private/1988-01-28.rom > 1988-01-28.nasm
ndisasm -o0x8000 -se105h -se05ah -se6ffh -sf025h -sf8aah private/1988-01-28.rom > 1988-01-28.nasm
Then I massaged the output with a regex:
^([0-9A-F]+)\s+([0-9A-F]+)\s+(o32 |a32 |)([^\s]*) *(.*)$ --> \t$3$4\t$5\t\t\t; $1 $2
Then I ran custom TextOut command to clean up the code:
Then I ran the TextOut command, with the *--nasm* option, to clean up the code:
node ~/Sites/pcjs/modules/textout/bin/textout --file=1988-01-28.nasm --nasm > t.nasm
mv t.nasm 1988-01-28.nasm
The result: [1988-01-28.nasm](1988-01-28.nasm). Now it needs a human touch.
The result, [1988-01-28.nasm](1988-01-28.nasm), can then be reassembled:
nasm -f bin 1988-01-28.nasm -l 1988-01-28.lst -o 1988-01-28.rom