[time-nuts] Cheap 5370A on eBay

2014-12-20 Thread Mark Sims
I believe there are 5370 ROM dumps on KO4BB.COM I few years back i posted on this forum how I restored a 5370A that had a missing ROM board by installing an EEPROM into the empty socket on the CPU board. I did have to jumper a couple of address lines to the EEPROM and perhaps tweak the

Re: [time-nuts] Cheap 5370A on eBay

2014-12-20 Thread Poul-Henning Kamp
In message blu170-w651e405ea49cc0fe9e42d0ce...@phx.gbl, Mark Sims writes: I believe there are 5370 ROM dumps on KO4BB.COM They're also in the BBB-5370 repos. I few years back i posted on this forum how I restored a 5370A that had a missing ROM board by installing an EEPROM into the

Re: [time-nuts] Cheap 5370A on eBay

2014-12-20 Thread Mike S
On 12/19/2014 10:40 PM, Mark Sims wrote: I few years back i posted on this forum how I restored a 5370A that had a missing ROM board by installing an EEPROM into the empty socket on the CPU board. Based off of that, I did similar, and documented it here: http://www.flatsurface.com/5370A/

Re: [time-nuts] Cheap 5370A on eBay

2014-12-20 Thread Orin Eman
On Sat, Dec 20, 2014 at 12:12 AM, Poul-Henning Kamp p...@phk.freebsd.dk wrote: In message blu170-w651e405ea49cc0fe9e42d0ce...@phx.gbl, Mark Sims writes: I believe there are 5370 ROM dumps on KO4BB.COM They're also in the BBB-5370 repos. I few years back i posted on this forum

Re: [time-nuts] Cheap 5370A on eBay

2014-12-19 Thread Bob Camp
Hi A *lot* of errors on the 5370’s (A or B) can be traced to a couple of fairly simple issues: 1) Connectors and sockets. Simple un-plug and plug back in may solve the problem (at least for a while). 2) The power supply. The parts are pretty common, so it’s a fairly easy fix. 3) Alignment.

Re: [time-nuts] Cheap 5370A on eBay

2014-12-19 Thread Poul-Henning Kamp
In message 766218c3-5ac3-4189-899b-916858f1f...@n1k.org, Bob Camp writes: A *lot* of errors on the 5370’s (A or B) can be traced to a couple of fairly simple issues: 4) (E)PROMS loosing their memory. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 p...@freebsd.org |

Re: [time-nuts] Cheap 5370A on eBay

2014-12-19 Thread Gerhard Hoffmann
Am 19.12.2014 um 19:34 schrieb Poul-Henning Kamp: 4) (E)PROMS loosing their memory. Are the known good eprom images available somewhere? I would like to refurbish my 5370A over the holidays. It still seems to work but has at least some bad contacts in the backplane from time to time. best

Re: [time-nuts] Cheap 5370A on eBay

2014-12-19 Thread Yuri Ostry
Hello, Friday, December 19, 2014, 21:34:35, Poul-Henning Kamp wrote: PH PH In message 766218c3-5ac3-4189-899b-916858f1f...@n1k.org, Bob Camp writes: A *lot* of errors on the 5370’s (A or B) can be traced to a couple PH of fairly simple issues: PH 4) (E)PROMS loosing their memory.

[time-nuts] Cheap 5370A on eBay

2014-12-18 Thread Orin Eman
#151518774079 Currently at $49.95 plus shipping. It's showing a ROM error (7.7) on startup. I asked what the error was this morning and they posted pictures this afternoon. It could be a candidate for one of John Seamons' 5370 processor replacement boards assuming nothing else is wrong. I