[sdiy] RAM CCD

[Ken Stone]

>Yep, that's right. To replace a 2112 (or two), it should be possible to
>do some stripboard hack using a 6116 at a pinch. 
>Address In, common Data I/O, WR, CE - it's all there.

Actually, I had a couple of these 2112 kicking around. I wonder what I did with
them.

>D4016D looks like NEC, meaning uPD4016D. Sometimes NEC had a different
>numbering scheme than the rest of the world. Found nothing about that
>one though. My 1979 NEC book appears to be too fresh for that...

Already posted on this one. Its an NMOS variant of the 6116 for all
practical intents and purposes.

Also a couple of times I've mentioned using 6116P as battery backed up ram
and getting at least 15 years out of the batteries (AAA drycells) keeping
the data intact. ANd each time I have, someone has "corrected" me saying
6116LP. So let me take this opportunity to state emphatically that they are
6116P - NOT the low power ones. Even the regular ones draw little current.

As for the NMOS variants, it is a different matter entirely. I forget the
part number, but it was a pin for pin drop-in for the 6116, and it GUZZLED
current.

Ken
_______________________________________________________________________
Ken Stone   sasami at hotkey.net.au or sasami at cgs.synth.net
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