Re: "newer" vintage computers, parts, electronics for sale $100 LARGE lot

2022-05-09 Thread Grant Taylor via cctalk
On 5/9/22 3:54 PM, Bill Degnan via cctalk wrote: https://philadelphia.craigslist.org/sys/d/kennett-square-vintage-computers/7480814347.html What are the two (identical) 1U servers that are missing the face / bezel in picture 17? They look suspiciously like a Sun 1U server I have. If they

"newer" vintage computers, parts, electronics for sale $100 LARGE lot

2022-05-09 Thread Bill Degnan via cctalk
https://philadelphia.craigslist.org/sys/d/kennett-square-vintage-computers/7480814347.html I am clearing space at the museum. I really don't want to send directly e-waste so consider making this large lot of 80's-early 2000's items for the low low price of $100 yours. If you're a HAM fest/flea

Re: The TRS-80 Journey Continues

2022-05-09 Thread Fred Cisin via cctalk
Sorry, to pester with irrelevant details, . . . On Mon, 9 May 2022, Bill Gunshannon via cctalk wrote: Not pestering. I appreciate you taking the time to answer my questions. I'm enjoying "going back to those days". But, I got out of TRS80 whenthe PC was introduced. When the model4 came

Re: The TRS-80 Journey Continues

2022-05-09 Thread Bill Gunshannon via cctalk
On 5/9/22 17:08, Fred Cisin via cctalk wrote: On Mon, 9 May 2022, Bill Gunshannon via cctalk wrote: I "duplicated" getting the prompts that I don;t think should be there. All I have to do is try to boot from a bad disk.  ie. Hit reset while holding the "1" key with a non-bootable disk in drive

Re: Looking for Silent 700 Model 765 lower board

2022-05-09 Thread James B DiGriz via cctalk
On Sat, 7 May 2022 19:05:49 -0700 Cameron Kaiser via cctalk wrote: > These things must be cursed by G-d. I've landed three. Two had bad > lower boards (the ones with the bubble memory and the main 9980 MCU) > already. The third had a bad print mechanism. I replaced the printer > mechanism, but

Re: The TRS-80 Journey Continues

2022-05-09 Thread Fred Cisin via cctalk
On Mon, 9 May 2022, Bill Gunshannon via cctalk wrote: I "duplicated" getting the prompts that I don;t think should be there. All I have to do is try to boot from a bad disk. ie. Hit reset while holding the "1" key with a non-bootable disk in drive 0:. Sorry, to pester with irrelevant details,

Re: The TRS-80 Journey Continues

2022-05-09 Thread Bill Gunshannon via cctalk
On 5/9/22 14:39, Kelly Leavitt wrote: *From:* cctalk on behalf of Bill Gunshannon via cctalk *Sent:* Monday, May 9, 2022 1:10 PM *To:* cctalk@classiccmp.org *Subject:* Re: The TRS-80 Journey Continues On 5/9/22

Re: The TRS-80 Journey Continues

2022-05-09 Thread Kelly Leavitt via cctalk
From: cctalk on behalf of Bill Gunshannon via cctalk Sent: Monday, May 9, 2022 1:10 PM To: cctalk@classiccmp.org Subject: Re: The TRS-80 Journey Continues On 5/9/22 13:410 Bill via cctalk wrote: > Just took some time to duplicate it. Answered the "Cass?"

Re: The TRS-80 Journey Continues

2022-05-09 Thread Bill Gunshannon via cctalk
On 5/7/22 13:48, Fred Cisin via cctalk wrote: On Sat, 7 May 2022, Bill Gunshannon via cctalk wrote: On another note, at one point my 4P failed to read from a floppy.  The "Cass?" prompt showed up followed by the "Memory" prompt.  I'm confused.  I thought the 4P didn't have any ROM in it. 

Re: DEC H7822 power supply

2022-05-09 Thread Tony Duell via cctalk
On Mon, May 9, 2022 at 2:27 PM Paul Koning via cctalk wrote: > > Why would you expect a transceiver power supply to be isolated from system > ground? The transceiver logic ground (via the AUI connector) is tied to the > system ground. It is the coax that is isolated from the system ground,

Re: DEC H7822 power supply

2022-05-09 Thread Paul Koning via cctalk
> On May 8, 2022, at 7:04 PM, Maciej W. Rozycki via cctalk > wrote: > > On Sun, 8 May 2022, Tony Duell wrote: > >>> In the H7821 it's -9Vdc return pairing with -9Vdc supplied on the yellow >>> wire (an isolated circuit). Pin numbers 14 & 13. Try measuring voltage >>> across the suspicious

Re: DEC H7822 power supply

2022-05-09 Thread Peter Coghlan via cctalk
Tony Duell wrote: > On Sun, May 8, 2022 at 1:02 PM Maciej W. Rozycki via cctalk > wrote: > > > In the H7821 it's -9Vdc return pairing with -9Vdc supplied on the yellow > > wire (an isolated circuit). Pin numbers 14 & 13. Try measuring voltage > > across the suspicious connections as any

Re: DEC H7822 power supply

2022-05-09 Thread Peter Coghlan via cctalk
Hi Maciej, > > > > > What is H7826 used in? I don't think I have any of those. > > DECstation 5000/1xx systems and TURBOchannel Extender boxes. Not sure if > anything else. > Ok. I have VAXStation/MicroVAX and Alpha systems but no DECStations so that explains why I haven't seen them. > > >