Fixed broken links
This commit is contained in:
Jeff Parsons
parent
06094fcd48
commit
fcab095fa0
10 changed files with 23 additions and 21 deletions
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@ -30,7 +30,7 @@ The following IBM keyboard configuration files are currently available:
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- [us83-buttons-arrows.xml](us83-buttons-arrows.xml)
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- [us83-buttons-functions.xml](us83-buttons-functions.xml)
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- [us83-buttons-minimal.xml](us83-buttons-minimal.xml)
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- [us83-buttons-softkeys.xml](us83-buttons-softkeys.xml)
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- [us83-softkeys.xml](us83-softkeys.xml)
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- [us84-buttons-arrows.xml](us84-buttons-arrows.xml)
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- [us84-buttons-functions.xml](us84-buttons-functions.xml)
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@ -57,7 +57,8 @@ a predefined state, which automatically restores the machine and the specified a
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state, while others include a hard disk with preinstalled software.
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However, most simply boot an early version of DOS, and the hard disk, if any, will generally be unformatted.
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From there, you can other disks and install other software.
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From there, you can load other disks from the [Disk Library](/disks/pc/) (or mount your own disks) and install
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other software.
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### Model 5150 Machine Configurations
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@ -2,7 +2,7 @@
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layout: post
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title: COMPAQ BIOS ROMs
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date: 2016-02-24 14:00:00
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permalink: /blog/2016/02/24/
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permalink: /devices/pc/rom/compaq/bios/
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---
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COMPAQ BIOS ROMs
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@ -13,10 +13,10 @@ tmp:
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tmp/1988-01-28.rom: 1988-01-28.json
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$(FILEDUMP) --file=1988-01-28.json --output=tmp/1988-01-28.rom --format=rom
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tmp/1988-01-28-regen.nasm: tmp/1988-01-28.rom
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ndisasm -o0x8000 -se105h -se05ah -se6ffh -sf025h -sf8aah tmp/1988-01-28.rom > tmp/1988-01-28-regen.nasm
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$(TEXTOUT) --file=tmp/1988-01-28-regen.nasm --nasm > tmp/t.nasm
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mv tmp/t.nasm tmp/1988-01-28-regen.nasm
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tmp/1988-01-28-regen.asm: tmp/1988-01-28.rom
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ndisasm -o0x8000 -se105h -se05ah -se6ffh -sf025h -sf8aah tmp/1988-01-28.rom > tmp/1988-01-28-regen.asm
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$(TEXTOUT) --file=tmp/1988-01-28-regen.asm --nasm > tmp/t.asm
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mv tmp/t.asm tmp/1988-01-28-regen.asm
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tmp/1988-01-28-regen.rom: tmp/1988-01-28-regen.nasm
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nasm -f bin tmp/1988-01-28-regen.nasm -l tmp/1988-01-28-regen.lst -o tmp/1988-01-28-regen.rom
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tmp/1988-01-28-regen.rom: tmp/1988-01-28-regen.asm
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nasm -f bin tmp/1988-01-28-regen.asm -l tmp/1988-01-28-regen.lst -o tmp/1988-01-28-regen.rom
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@ -86,7 +86,7 @@ In the current directory, an original ROM can be regenerated from the JSON-encod
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The ROM can then be fed into NDISASM, the disassembler included with NASM:
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ndisasm -o0x8000 -se105h -se05ah -se6ffh -sf025h -sf8aah 1988-01-28.rom > 1988-01-28.nasm
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ndisasm -o0x8000 -se105h -se05ah -se6ffh -sf025h -sf8aah 1988-01-28.rom > 1988-01-28.asm
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The `-o0x8000` argument is required to "org" the file at the proper starting address, but the `-s` arguments
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are optional; they simply establish a few sync points within the ROM image that save a little cleanup effort, by
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@ -94,13 +94,13 @@ preventing disassembly in the middle of instructions.
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Next, the PCjs [TextOut](/modules/textout/) command, with the *--nasm* option, prepares the code for reassembly:
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node ../../../../../../modules/textout/bin/textout --file=1988-01-28.nasm --nasm > temp.nasm
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mv temp.nasm 1988-01-28.nasm
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node ../../../../../../modules/textout/bin/textout --file=1988-01-28.asm --nasm > temp.asm
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mv temp.asm 1988-01-28.asm
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The result, [1988-01-28.nasm](1988-01-28/1988-01-28.nasm), after a small amount of manual cleanup, can now be
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The result, [1988-01-28.asm](1988-01-28/1988-01-28.asm), after a small amount of manual cleanup, can now be
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successfully reassembled:
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nasm -f bin 1988-01-28.nasm -l 1988-01-28.lst -o 1988-01-28.rom
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nasm -f bin 1988-01-28.asm -l 1988-01-28.lst -o 1988-01-28.rom
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However, it does NOT produce a binary identical to the original ROM, in part because of instruction ambiguities (ie,
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instructions that can be assembled multiple ways). It's possible the reassembled ROM may still work, but more research
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@ -17,7 +17,7 @@ Each ROM chip apparently contains 32Kb of data, but only the upper 16Kb of each
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VGA_Wonder_V3-1.02_EVEN.BIN
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VGA_Wonder_V3-1.02_ODD.BIN
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and merge them into a single 64Kb file, using the PCjs [FileDump](/modules/filedump/lib/) utility:
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and merge them into a single 64Kb file, using the PCjs [FileDump](/modules/filedump/) utility:
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filedump --file=1988-11-11/archive/VGA_Wonder_V3-1.02_EVEN.BIN --merge=1988-11-11/archive/VGA_Wonder_V3-1.02_ODD.BIN --format=rom --output=1988-11-11/archive/VGA_Wonder_V3-1.02.rom
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