On Monday 14 August 2006 19:43, Ethan Dicks wrote:
On 8/15/06, woodelf <bfranchuk at jetnet.ab.ca>
wrote:
If you use 2167's ( 16k x 1 ) ram's
you can have 16k of memory ( 12 chips ) for
about $25 not counting glue logic and other stuff.
Why not use a pair of 62256s? 32Kx16 and ignore 4 bits. It'd even be
easy to use a Dallas DS1210 or something like it to provide battery
backup.
I'd probably do something like what the SBC-6120 does... use some typical 486
motherboard cache SRAM. Cheap, and relatively easy to find. :)
You'd end up with one or two chips to do 32k x 12.
Pat
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