Re: Anyone know where uPD2167 SRAMs appeared?

2018-10-10 Thread allison via cctalk
On 10/09/2018 08:54 PM, Josh Dersch via cctalk wrote: > On Tue, Oct 9, 2018 at 5:14 PM Ethan Dicks via cctalk > wrote: > >> Hi, All, >> >> I asked a version of this question earlier this year. I have not been >> able to find any vintage machines that used these 16Kx1 55ns SRAMs. >> Anyone recogni

Re: Anyone know where uPD2167 SRAMs appeared?

2018-10-09 Thread Ethan Dicks via cctalk
On Tue, Oct 9, 2018 at 9:07 PM Chuck Guzis via cctalk wrote: > On 10/09/2018 05:13 PM, Ethan Dicks via cctalk wrote: > > > I asked a version of this question earlier this year. I have not been > > able to find any vintage machines that used these 16Kx1 55ns SRAMs. > > Anyone recognize them? > > S

Re: Anyone know where uPD2167 SRAMs appeared?

2018-10-09 Thread Glen Slick via cctalk
On Tue, Oct 9, 2018 at 5:14 PM Ethan Dicks via cctalk wrote: > > There's little point in wiring 8 of them up into a byte vs using a > 62256 except for speed. 55ns is faster than any 8MHz machine really > needs (100ns-150ns was typical for those depending on bus > architecture). I could see these

Re: Anyone know where uPD2167 SRAMs appeared?

2018-10-09 Thread Chuck Guzis via cctalk
On 10/09/2018 05:13 PM, Ethan Dicks via cctalk wrote: > I asked a version of this question earlier this year. I have not been > able to find any vintage machines that used these 16Kx1 55ns SRAMs. > Anyone recognize them? Lots of them for sale on eBay. Probably few > buyers. One would want to k

Re: Anyone know where uPD2167 SRAMs appeared?

2018-10-09 Thread Josh Dersch via cctalk
On Tue, Oct 9, 2018 at 5:14 PM Ethan Dicks via cctalk wrote: > Hi, All, > > I asked a version of this question earlier this year. I have not been > able to find any vintage machines that used these 16Kx1 55ns SRAMs. > Anyone recognize them? Lots of them for sale on eBay. Probably few > buyers.

Anyone know where uPD2167 SRAMs appeared?

2018-10-09 Thread Ethan Dicks via cctalk
Hi, All, I asked a version of this question earlier this year. I have not been able to find any vintage machines that used these 16Kx1 55ns SRAMs. Anyone recognize them? Lots of them for sale on eBay. Probably few buyers. One would want to know which systems used them, thus my question. They