On Tue, 08 May 2001 00:32:18 -0400, you wrote:
>The board uses a 7404 Hex Inverter (14-pin DIP) to invert the address/chip
>select line. I designed the board specifically for use with 4K ROMs. 2K
>should also work, but anything larger than 4K (2732s) will not work.
I'm no electronics whiz, but I recall someone mentioning that the inverter
for the chip-select line could be done with a single transistor, no need
for a (comparatively) bulky and expensive 14-pin DIP chip. Based on my
sketchy knowledge, I think that's correct. Anyone? Wilkson?
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