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Playing with NASM

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This commit is contained in:
Jeff Parsons 2015-04-04 12:35:36 -07:00 • committed by jeffpar
commit 96a39c9bbe
8 changed files with 15310 additions and 2 deletions
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14924
devices/pc/bios/compaq/deskpro386/1988-01-28.nasm Normal file
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17
devices/pc/bios/compaq/deskpro386/README.md
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@ -62,3 +62,20 @@ the DEVICE OPERATION table indicated that, for a READ operation, /CE and /OE pin
while the /PGM should be connected to INPUT HIGH VOLTAGE. So I wired pin 27 (/PGM) to +5V instead of GND, and the dump
worked perfectly. The NYC Resistor article implied that every *active low* pin should be connected to GND, but apparently
there are exceptions to that general rule.
Producing Source Code with NDISASM
---
From the current directory, I ran:
ndisasm -o0x8000 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 a TextOut command to vertically align all the comments:
node ~/Sites/pcjs/modules/textout/bin/textout --file=1988-01-28.nasm --alignvert > t.nasm
mv t.nasm 1988-01-28.nasm
To be continued....