test-drb December 2017

test-drb@ccmp.vtda.org

127 participants
147 discussions

by jcwelch＠hal-pc.org

Update: This is the map of the machine: ........................?? AAA BBB CCC DDD EEE FFF .................... (Rear/Fans/Power Supply) 1 [M8266----------------] (Front/Keypad/DC ON) ........................ 2 [M8265----------------] .................... ........................ 3 [M9312] [M7859--------] .................... ........................ 4 [M7891----------------] .................... ........................ 5 [M7762----------------] .................... ........................ 6???????? [M7860--------] .................... ........................ 7 [M7840----------------] .................... ........................ 8???????????? GNT .................... ........................ 9 [M9302] [M7856--------] .................... ........................?? AAA BBB CCC DDD EEE FFF .................... Reseating the ribbon cable on the M7859 changed the display.? I have replaced the M7840 with a G7273. Now when I power on it says (dim)0, (bright)0, blank, (dim)0, blank, blank. I have reseated the M7859, I don't think I have another one. Maybe I should hit it with a vacuum. I had forgotten about needing to cut a wire for DMA.? Can you give me a refresher on how to tell which slots are cut?? I remember having to turn the chassis over and looking for a particular wire but that was >15 years ago. On 12/8/2017 3:17 PM, Henk Gooijen wrote: > > > > > > Van: John Welch via cctech > Verzonden: vrijdag 8 december 2017 21:25 > Aan: cctech at classiccmp.org > Onderwerp: Revive 11/34 > > > > I am reviving an 11/34. Cards are: > > Back/Fans [M8266--------]? Front of machine where keypad is. > >??????????? [M8265--------] > >??????????? [M9312] [M7859] > >??????????? [M7762--------] > >??????????? [OPEN]? [M7860] > >??????????? [M7840--------] > >??????????? Bus grant in third from front slot > >??????????? [M9302] [M7856] > The 7856 is hooked to a cable/null modem (i think)/PC running > XP&Hyperterminal > > When I first powered on the programmers console said '7' and I powered > off, then back on, and now it says '5' > > Any suggestions as to what to try first?? I may have the bus grant in > backwards.? I have other boards I can try. > > Sincerely, > John Welch > :qw > > > > > > It is not completely clear (to me) how the modules are installed in the > > backplane. Standing in front of the 11/34 processor box (looking at the > > console), slot number 1 is at the right side. Each slot has 6 positions. > > Position A is at the rear side, followed by B thru F. Position F is > > thus at the front side. > > There is no confusion about the first 4 slots. > > > > Slot 1 and 2 hold the 11/34A processor boards, with M8266 in slot 1, > > and M8265 in slot 2. > > Slot 3, positions A and B has the M9312 bootstrap/terminator board, > > and slot3, positions C thru F has the M7859 KY11-LB programmer's console > > interface board. > > Slot 4 holds the RL11 interface. This module does "DMA", so the NPR > > jumper must be cut (open) on the backplane. > > Slot 5 has an SPC in positions C thru F. I had to look it up; it is the > > DR11-C. > > > > We are up to slot 6. Now things get "interesting" ... is that M7840 a typo? > > The field guide says that this is a KE11-B Extended Arithmetic Element. > > I do not know that board, is it "hex" or "quad"? > > Not sure that board belongs there ... and if it is quad, I assume it has > > to be in positions C thru F. I would suggest to pull this module, and > > check the NPR wire presence on the backplane. You need a G727A or G7273 > > in this slot when the M7840 is removed. > > > > If you are not skipping slots (see below), we are now at slot 7. There > > is probably a G727A grant continuity card (aka "knockle buster") in > > position D. That would be OK, but if the NPR jumper is cut on the > > backplane, you would need a G7273 continuity and NPR card in positions > > C - D. It is easy to have the G727 put in wrong. The 4 copper "jumper" > > traces should be facing the next higher-numbered slot. > > > > Then you say that the next slot has the M9202 (in position A - B) and > > the M7856 (SLU and RTC) in positions C thru F. > The M9202 connects two system units (backplanes). So, what is the next > > backplane?? Or do you have the M9202 in slot 8 and slot 9, positions > > A - B?? I have never seen that ... > > > > I am missing one slot. The 11/34 backplane has 9 slots. > > > > When you power up the system, the display should show 6 octal numbers. > > If only one digit shows a number (7 or 5 or whatever), there is an > > issue with the console itself, or the M7859. The 6 digits of the display > > are multiplexed. Maybe the connection cable between the console and the > > M7859 - damaged/knicked? It is worth checking out the simpler things first. > > > > Henk. -- Sincerely, John Welch 281-353-4706 Home 713-725-7017 Cell :qw

6 years, 9 months

RX02 Difficulties

by jnc＠mercury.lcs.mit.edu

> From: Aaron Jackson > Most of the tests now look something like this: > ... > SECTOR ADDRESS ERROR > EXPECTED SECTOR=18. > TARGET SECTOR=17. I wonder if there's a problem with the floppy you are using? Remember, the RX0x drives can't hard reformat the floppies (as in, write the sector headers), so if the floopy has a problem, you can't fix it with the RX02. Noel

6 years, 9 months

Tandy 1000 keyboard keys

by alexandre.tabajara＠gmail.com

Greetings from Brazil :) Just got a Tandy 1000 SX. Nice shape, but it is missing the ESC and F10 keys. Would someone have a complete assembly (switch + caps) to sell, shipping to Brazil incuided? I'd also be interested in the monitor cable and one or two joysticks. Thanks! Alexandre http://tabajara-labs.blogspot.com

6 years, 9 months

VAX Q-bus identical to PDP-11 Q-bus?

by aaron＠aaronsplace.co.uk

I'm looking after a VAX 4000 for a friend, which has a SCSI Q-bus card (M5976). If the card did not have the large metal face, would it work in a Q-bus PDP-11? We are not going to potentially ruin a card by trying this, but I am interested to know if this is the case. Thanks, Aaron.

6 years, 9 months

Any difference between VAX Q-bus and PDP-11 Q-bus cards?

by aaron＠aaronsplace.co.uk

6 years, 9 months

Preventing VAX running VMS / Multinet from being used as SMTP relay

by billdegnan＠gmail.com

I have a microvax set up with VMS 5, running MULTINET (and decnet locally). The server has a FQDN and after a while being exposed to the WWW someone out there started using the server as an SMTP relay. I can disable and clear the queue, but I'd like to block entirely this from happening in the first place. I'd like to learn more about how this happens in VMS. Anyone have had this same problem before? I realize back when VMS 5 was current it was not so much of an issue, but today it is. I am working on a solution. I can envision a few ways including blocking the smtp relay port >from the firewall, but if possible I'd like to set up a VMS Multinet solution as a learning exercise. I am open to suggestions, and once I find the solution I'll post it. I understand that this kind of thing is not cookie cutter, there are different levels one could address something like this. I have a comcast business router, and one of the 5 IPs I have is NAT assigned to the internal 10.1.10 port of the microvax. This is the same machine I wrote about previously as with then, thanks for your help. I find the best way to learn is on the actual hardware warts and all. Bill

6 years, 9 months

Kodak Diconix 150plus - looking for info

by r_a_feldman＠hotmail.com

>Date: Sat, 25 Nov 2017 23:27:29 +0000 >From: Philip Pemberton <classiccmp at philpem.me.uk> > >Hi folks, > >I just picked up a Kodak Diconix 150 Plus portable inkjet printer. No >power supply or documentation, but it works fine. <snip> >Which brings me onto my question... Does anyone have any information on >this printer? I have a Diconix 180si, with User Manual and Technical Reference manual. >I'm mainly looking for a DIP switch table (annoyingly, it won't produce >a config print - just a test page). I'd also love to find some details >on the control codes, emulations and character sets it supports. The 180si does not use DIP switches, so I can't help with that. The Tech Ref manual does have Command Code and Character Set info, however. The whole manual is a bit over 100 pages. I can scan it if you are interested. >Also - does anyone know what the material on the printhead capping >station is, or if they're still available? >It looks like a cardboard or blotting paper pad with a plastic backing >card. This one is soaked in ink and looks like it could do with being >replaced. I assume it's to stop the cartridge from drying out? The 180si uses one also. It "catches a spray of ink which the printer uses to clear the printhead cartridge before printing." A new pad is included in each printhead cartridge container. >I've put a HP 51604A (expired 2012!) cartridge in there, and it seems >happy enough. >Thanks, >-- >Phil. >classiccmp at philpem.me.uk >http://www.philpem.me.uk/ Bob

6 years, 9 months

Reminder about Vintage Computer Calendars

by sbolton＠bfree.on.ca

To everyone who ordered the amazing vintage computer calendars from us recently - thank you! I trust everyone has received theirs by now >from the first round. We still have a few left for those interested! Go the page below: http://pcmuseum.ca/shop.asp If you don't want to use PayPal, we have alternative payment methods available. Thanks for your support--hope everyone has a great holiday season!

6 years, 9 months

Playing with HP2640B

by mattislind＠gmail.com

I have been working on a HP 2640B terminal. It was mostly about fixing the "screen mold" problem and cleaning up the liquids that had been seeping out >from the screen down into the bottom. The small coaxial wire that connects the 4.9152 MHz clock signal form the power supply (never seen a crystal controlled SMPSU before!) to the backplane was broken off, but after fixing that the terminal worked fine. Just needed some adjustment to the brightness. With the correct terminfo installed it worked quite well as a serial terminal to a Linux box. Then I tried the short 8008 programs that Christian Corti pointed to http://computermuseum.informatik.uni-stuttgart.de/dev_en/hp2644/diag.html and ftp://computermuseum.informatik.uni-stuttgart.de/hp/hp2644 I tried both a couple of times. The terminal enter the LOADER mode but just hangs completely at the end. I tried different baudrates but no difference. The selftest STATUS line tell me 40<802 which should indicate that there are 4k memory in the terminal. However there should be 5k since there is one 4k board and one combined control store and 1 k RAM board. Maybe there is a fault in the 1k SRAM? The terminal doesn't complain though. Regardless, the programs listed either starts at adress 30000 or 36000 which should then be within the available space. The question is, should these program work for the HP2640B as well? It has a 8008 but my guess is that the firmware is different from the 2644. What is the joint experience regarding this? Has anyone ran these small programs above on a HP2640B? The HP 2640B firmware consists of four EA 4900 ROM chips which annoyingly are not anything like normal EPROMs. So dumping will need special considerations. Has anyone dumped the HP 2640B firmware already? I didn't find it on bitsavers. /Mattis

6 years, 9 months

NeXT hardware about to be recycled in Texas

by lproven＠gmail.com

https://twitter.com/tapbot_paul/status/937465839888093184/photo/1 I don't know if anyone is in the area to rescue this... -- Liam Proven ? Profile: https://about.me/liamproven Email: lproven at cix.co.uk ? Google Mail/Talk/Plus: lproven at gmail.com Twitter/Facebook/Flickr: lproven ? Skype/LinkedIn/AIM/Yahoo: liamproven UK: +44 7939-087884 ? ?R/WhatsApp/Telegram/Signal: +420 702 829 053

6 years, 9 months

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test-drb December 2017