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

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? > >

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 >

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

dmk to imd problem

2018-10-09 Thread Fritz Chwolka via cctalk
Hi, I have a lot of dmk images and tried to convert them to imd with dmk2imd.com. Trying with on of those files: http://oldcomputers-ddns.org/public/pub/rechner/eaca/genie_3s/my_genie_3s/image/fritz/cpm/g3s_f01.dmk The conversion was fast and told me: Tracks:80x6528 DSSD Assuming 500kbps data

Re: WTB: BA11-K Rack Rails

2018-10-09 Thread Noel Chiappa via cctalk
> From: Paul Anderson > I don't remember the D tilting. http://gunkies.org/wiki/File:BA11-DSide.jpg This is very similar to the slides on the BA11 (-11/20), which also had the rotation, so I suspect they were all this way (i.e. there no early versions without, etc). Having said that, if

Re: dmk to imd problem

2018-10-09 Thread Al Kossow via cctalk
On 10/9/18 12:39 AM, Fritz Chwolka via cctalk wrote: Hi, I have a lot of dmk images and tried to convert them to imd with dmk2imd.com. try the conversion in the HcX utility

Re: WTB: BA11-K Rack Rails

2018-10-09 Thread Bill Degnan via cctalk
On Tue, Oct 9, 2018 at 8:19 AM Noel Chiappa via cctalk < cctalk@classiccmp.org> wrote: > > From: Paul Anderson > > > I don't remember the D tilting. > > http://gunkies.org/wiki/File:BA11-DSide.jpg > > This is very similar to the slides on the BA11 (-11/20), which also had the > rotation,

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

Re: BPK-72 or Bubble Memory Dummy Module + Seed Module

2018-10-09 Thread dwight via cctalk
CHM has these in their collection. Where are you located at? They don't look really complicated. I'd think one could make one if they had a schematic. Dwight From: cctalk on behalf of Josh via cctalk Sent: Monday, October 8, 2018 9:42:22 AM To: General