30197another wonderful donation and a mystery solved
- Apr 16, 2013William F. Dudley Jr. donated another wonderful box
of homebrew parts to MARCH:
a new unused Intersil 6100 eval kit,
several PHI-deck digital cassettes
(2 in the original blue eval cases),
spare memory cards and schematics.
The intention was to build a PDP8
using the 6100 chips and the PHI decks
emulating DECtapes to run OS8
and all the PDP8 software.
Each memory card is 4k of 12 bit DRAM,
8 max per system.
They're all spare parts for the PDP8 he built.
That's the "mystery machine" from a few weeks ago,
so MARCH now has a homebrew PDP8!
Bill Dudley identified the "mystery machine" as his.
The flip-chip backplane was a clue
that it is DEC compatible!
> That's it. PDP-8 using the 6100 chip set.
> Oh, and the LEDs are actually HP dot matrix LEDs
> with builtin counter/decoder/driver/LED.
> Quite high-tech for 1976.
> If it's got that "flip-chip" bus, a baby blue front panel,
> thumb wheels, and those same memory cards, then that's it.
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