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Microcontroller Exploits
book

Microcontroller Exploits

by Travis Goodspeed
September 2024
Intermediate to advanced
408 pages
7h 29m
English
No Starch Press
Content preview from Microcontroller Exploits

I  Other Chips

I.1 PAL Truth Tables

Programmable array logic (PAL) and generic array logic (GAL) devices were early technologies for programmable logic that predate CPLD and FPGA devices. Programming methods were often unique to the brand of the chip, while the pinout and functionality were compatible between vendors. These days, they are mostly dumped for retrocomputing emulation and repair projects.

DuPAL is an open suite of tools for PAL reverse engineering, available as Battaglia (2020). It consists of a hardware board with an Atmega chip for applying inputs and sampling outputs of a PAL chip, and GUI tools in Java that can export observations or test potential chip configurations.

DuPAL does not read the raw memory out of the chip, so it ...

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Publisher Resources

ISBN: 9781098182243Errata Page