retrocomputing

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I stumbled across this the other day - Old DOS Never dies... (ia801209.us.archive.org)

This should boot up on your run of the mill S-100 based system with an 8086. Maybe an 8080 too? Also, it reportedly runs under #simH as a virtual machine. According to some, this is the earliest known version of #86-DOS, not long after replacing #QDOS as its successor....

I reverse-engineered all Timex Datalink watches and devices, the Notebook Adapter, and the CRT graphics in Ruby! (lemmy.world)

Heya! I thought I’d mention that I’ve been doing a bunch of development on the optical Timex Datalink watches! I have been carefully sniffing data from the original Timex software with a logic analyzer, and have fully reverse engineered every Datalink protocol, the serial Notebook Adapter, and even the CRT syncing graphics!...

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