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Model 100 upgrade

I've designed a new mainboard for the Tandy / RadioShack TRS-80 Model 100, one of the very first tablet computers. The machine turns thirty years old this year and, amazingly, many of them still function! My upgrade replaces the Model 100's 2.4 MHz 80C85 with the more modern 16 MHz AVR AT90USB1286 on a Teensy++ and adds new features like VT100 emulation and the potential to increase the storage from the original by a factor of one million. [more inside]
posted by autopilot on Jan 6, 2013 - 1 comment

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