Model 100 RAM
diy modules
Francesco Messineo Gerbers for DIY Buy pre-made
Stardust DIP version SMT version
NEC module
There was an NEC module on ebay for a while. These work in Model 100.
http://ebay.com/itm/251666092812 (sold out now)
Pics https://goo.gl/photos/gGVSWwGiv9NSwveR7
If someone wants to clone the design, I have a few of these and can send you one.
8k (8,192-word) × 8-bit Static RAM
Components:
NEC D4364G-15L
TIHC148 (Texas Instruments' 74HC148)
Length 36mm / 1.42"
Width 22mm / 0.87"
row spacing 19mm / 0.74"
pin pitch 2.54mm / 0.1"