Re: 7854 vs 7D20


On Wed, 13 Dec 2017 07:37:27 -0000, you wrote:

The 7854 uses a TMS9900 processor, with a maximum clock speed of 3MHz. Takes me back to 1981 in my
first paid job, designing video switching networks driven by that processor. Massive ceramic package
that needed a great amount of force to push into a turned pin socket.


Many people may have run across the TMS9900 in the TI-99/4 and
TI-99/4A home computers from Texas Instruments. I was surprised to
find it in the 7854 but immediately recognized it.

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