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A couple of tools, lisafs and lisaobj

Started by Eschaton, February 21, 2026, 06:00:30 PM

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Eschaton

A little while ago I published a tool I wrote for listing and extracting files from Lisa filesystems on DiskCopy 4.2 disk images, lisafs: https://github.com/eschaton/lisafs

And just now, I published a tool for dumping the contents of Lisa object files, which can hopefully grow into a more comprehensive RE tool, lisaobj: https://github.com/eschaton/lisaobj

Both are ANSI C99, both are under the MIT license, and (since we need to specify nowadays) I didn't use an LLM in the process of creating either, just the documentation on Bitsavers and the Lisa OS source code.

AlexTheCat123

Ah, so this is why you wanted to figure out the packing algorithm!

Nice work; I bet this will prove to be a really useful tool!

Eschaton

Thanks! I'm hoping that this will help us towards, say, disassembling things like the Workshop shell so they can be hacked on to fix bugs, add features, etc.