My traditional NOS sources for MK4096 have dried up, so now I have to scrounge around for “pulls” for Apple-1/Mimeo ram.
Some MITS s100 ram cards have nice Mostek MK4096 dated 1976 and early 77. Pulling chips off two MITS ram cards, out of 64 chips total... I got about 18 good ones. Don’t worry I’ll replace the ram with nice reliable MK4027 type ram not appropriate for Apple-1 but plausible for MITS since they tended to use what ever was cheapest in Albuquerque the week they were built.
How scary is that 18 chips.... pretty bad failure rate. Sure it could be that these two cards at some point were stored badly or the MITS card just kills ram chips.
Anyone else have this kind of experience with MK4096 ram chips?