PT210 rs232 interface module
I've had a fondness for the Radio Shack TRS-80 PT-210 portable printing terminal for a long time. Unfortunately, I've been unable to find an RS-232 interface module for it. A couple years ago I found a hardcopy of the service manual and used it to enter schematics and lay out a board for it. I scanned it and that's the one that's circulating on the web. The schematics and foil patterns in the service manual seem to be slightly wrong, so I've been on the lookout for one on eBay. I found one and won it just now and will use it to verify my design. I should have blank boards ready for sale in a month or two. If the other bidder is here, please email me with a screenshot showing that you bid. I'll send you a blank board free of charge when I get boards made. -- David Griffith d...@661.org A: Because it fouls the order in which people normally read text. Q: Why is top-posting such a bad thing? A: Top-posting. Q: What is the most annoying thing in e-mail?
Re: DECstation firmware archive?
On 03/08/18 23:47, Bill Gunshannon via cctalk wrote: On 08/03/2018 01:53 PM, Glen Slick via cctalk wrote: On Fri, Aug 3, 2018 at 2:26 AM, Jan-Benedict Glaw via cctalk wrote: If it's of interest, I'd probably add a number of VAXstation dumps for several machines (3100, 4000, VS II GPX, VXT). One interesting thing about MicroVAX 3100 firmware is that the M10/20 and the M10e/20e motherboards are the same (as far as I know) as the InfoServer 100 and 150 motherboards, just with different firmware. In some situations an InfoServer may be more useful than a MicroVAX 3100. They can be converted by replacing the firmware. Has anybody ever tried dis-assembling the 3100 ROM to modify it to boot from bigger disks? bill The MicroVAX 3100 M10e/20e have a fix (or at least a late enough console ROM has the fix). No idea how easy it would be to back-port that to the original 3100 M10/20 (or the VAXstation 3100s). Antonio -- Antonio Carlini arcarl...@iee.org
Re: DECstation firmware archive?
On 08/03/2018 01:53 PM, Glen Slick via cctalk wrote: > On Fri, Aug 3, 2018 at 2:26 AM, Jan-Benedict Glaw via cctalk > wrote: >> If it's of interest, I'd probably add a number of VAXstation dumps for >> several machines (3100, 4000, VS II GPX, VXT). > One interesting thing about MicroVAX 3100 firmware is that the M10/20 > and the M10e/20e motherboards are the same (as far as I know) as the > InfoServer 100 and 150 motherboards, just with different firmware. In > some situations an InfoServer may be more useful than a MicroVAX 3100. > They can be converted by replacing the firmware. Has anybody ever tried dis-assembling the 3100 ROM to modify it to boot from bigger disks? bill
Re: Re: DECstation firmware archive?
Hello, maybe you have also a dump for a 4000-100A ? I have a motherboard which seems to have problems to Bcache or Pcache, and another one which I took as replacement, which has a very old version. I wonder if there's a way to dump the firmware in some way from the non-working one, then update the other... Of course I would avoid to desolder and resolder the flash Roms... Andrea
Re: DECstation firmware archive?
On 03/08/18 18:53, Glen Slick via cctalk wrote: On Fri, Aug 3, 2018 at 2:26 AM, Jan-Benedict Glaw via cctalk wrote: If it's of interest, I'd probably add a number of VAXstation dumps for several machines (3100, 4000, VS II GPX, VXT). One interesting thing about MicroVAX 3100 firmware is that the M10/20 and the M10e/20e motherboards are the same (as far as I know) as the InfoServer 100 and 150 motherboards, just with different firmware. In some situations an InfoServer may be more useful than a MicroVAX 3100. They can be converted by replacing the firmware. The specs for the 100 and 150 would confirm your suspicions. There's also a DTJ article somewhere that explains the evolution of the InfoServer line. (After the 150 I think they built custom hardware). Antonio -- Antonio Carlini arcarl...@iee.org
Re: RQDX3 formatter
Hi Eric, The only thing I have seen is the string from VCFED, I don't know if anyone asked Lou about hosting it. Last comment on the thread was Lou - N2MIY Senior Member Join DateMar 2008LocationWestchester County, NYPosts1,244 Sent. If anyone else wants it, let me know. I reread it at lunch today. It seems I finished it three years ago today! Lou On Fri, Aug 3, 2018 at 12:34 PM, Eric Smith wrote: > On Fri, Aug 3, 2018 at 10:08 AM, Bob Smith via cctalk > wrote: >> >> >> http://www.vcfed.org/forum/showthread.php?38940-Patching-ZRQCH0-to-use-any-geometry-MFM-hard-disk-on-RQDX3 > > > Is there some reason Lou doesn't want his document made publicly available > on a web page? >
Re: DECstation firmware archive?
On Fri, Aug 3, 2018 at 2:26 AM, Jan-Benedict Glaw via cctalk wrote: > > If it's of interest, I'd probably add a number of VAXstation dumps for > several machines (3100, 4000, VS II GPX, VXT). One interesting thing about MicroVAX 3100 firmware is that the M10/20 and the M10e/20e motherboards are the same (as far as I know) as the InfoServer 100 and 150 motherboards, just with different firmware. In some situations an InfoServer may be more useful than a MicroVAX 3100. They can be converted by replacing the firmware.
Re: RQDX3 formatter
On Fri, Aug 3, 2018 at 10:08 AM, Bob Smith via cctalk wrote: > http://www.vcfed.org/forum/showthread.php?38940-Patching- > ZRQCH0-to-use-any-geometry-MFM-hard-disk-on-RQDX3 > Is there some reason Lou doesn't want his document made publicly available on a web page?
Re: RQDX3 formatter
https://groups.google.com/forum/#!topic/vmsnet.pdp-11/ZjO5I_keK_k On Fri, Aug 3, 2018 at 12:08 PM, Bob Smith wrote: > http://www.vcfed.org/forum/showthread.php?38940-Patching-ZRQCH0-to-use-any-geometry-MFM-hard-disk-on-RQDX3 > > > On Fri, Aug 3, 2018 at 10:22 AM, Christian Corti via cctalk > wrote: >> Where do you patch the ZRQCH0 binary to use different geometries for non-DEC >> drives with a RQDX3? >> As it seems it should be possible, but noone has told how to do this ;-) >> >> Christian
Re: RQDX3 formatter
http://www.vcfed.org/forum/showthread.php?38940-Patching-ZRQCH0-to-use-any-geometry-MFM-hard-disk-on-RQDX3 On Fri, Aug 3, 2018 at 10:22 AM, Christian Corti via cctalk wrote: > Where do you patch the ZRQCH0 binary to use different geometries for non-DEC > drives with a RQDX3? > As it seems it should be possible, but noone has told how to do this ;-) > > Christian
RQDX3 formatter
Where do you patch the ZRQCH0 binary to use different geometries for non-DEC drives with a RQDX3? As it seems it should be possible, but noone has told how to do this ;-) Christian
Re: DECstation firmware archive?
On Wed, 2018-08-01 17:44:46 +0100, Maciej W. Rozycki via cctalk wrote: > On Sun, 15 Jul 2018, emanuel stiebler via cctalk wrote: > > > Are the firmware eproms for the DECstation archived anywhere? > > Are you looking for anything specific, or just like to save them? > > I have several dumps I made for reverse-engineering purposes, and a > couple of TURBOchannel option ROM dumps too. Let me see... If it's of interest, I'd probably add a number of VAXstation dumps for several machines (3100, 4000, VS II GPX, VXT). MfG, JBG --
