Posted By
gerliczer
on 2019-11-03
07:02:26
|  Re: Photo of an unknown 64kB memory expansion
There are photos of naked 64kB Memory Expansions in the Hardware section. Those that are sharp enough to read the marking of the components always have a pair of 74LS257s. You are the expert, tell me please the following. Why are those there? And what happens when they are operating?
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