test-drb

test-drb@ccmp.vtda.org

101090 discussions

by jsw＠ieee.org

Sorry, I didn?t ask on this one. It looked like a well used/loved machine with some wear and customizations to the front panel Jerry > On May 22, 2016, at 9:51 AM, Bill Sudbrink <wh.sudbrink at verizon.net> wrote: > > Jerry Weiss wrote: >> I saw one Altair 8800 > > I haven't seen an Altair at a hamfest in this century. > Out of curiosity, what was the seller asking? > > Bill S. > >

10 years

General Question about UNIBUS backplanes

by billdegnan＠gmail.com

Background - I have a PDP 11/40 that came to me with a CPU backplane and a general purpose 4 slot peripheral backplane. The CPU backplane came to me connected to the 4 slot via a std 11/40 M981. In the 4-slot I have I have a working 64K solid-state RAM card, M7856 serial card, M9312 bootstrap/console card, and an RL02 drive controller. I can access RAM >from the console, run the console program (monitor program) off the M9312 through the serial card. I can't boot yet off the RL02 and I am thinking this is due to a termination issue, not sure yet. I decided I need more backplane to go any farther. So I decided to insert two 32K core memory backplanes in between the original two backplanes that came with the system. My plan is to replace the solid-state RAM card with core, and this will free up a slot on the 4-slot backplane for a terminator. Am I correct in my logic? I have connected the "new" backplanes using M920's. Imagine the original system with a core backplane wedged in the middle. Power seems fine, DC LO AC LO fine. Right now there is nothing in the core backplanes, First I want to verify that I have them arrayed correctly and that I can still communicate with the (now) 4th backplane in the back. I can run "chase the lights" from the console but the serial card seems to have stopped working. It appears that the console program is being loaded and runs from the M9312 but nothing is appearing on the terminal. I cannot send an "A" to the terminal, the most basic test I can think of. Could be the the M7856 card decided to die on me just now, or something else is wrong. Does anyone have a PDP 11 /05/10/35/40 and have experimented about what you can and can't do with backplanes? I know that there are a lot of variables here, so I'd like to start with the basics Basic Question #1 Do I need grant cards in *every* empty slot of the core backplane, including the end slots with the M920's? Basic Question #2 Can you only use the core backplanes for core memory (assume yes), or are they capable of holding other types of cards temporarily? (yes/no/maybe) I am researching the system config on my own, but I thought if anyone had any advice I'd love to hear it, make troubleshooting a little easier. I have read up on the subject: http://retrocmp.com/how-tos/setup-a-pdp-11-unibus-backplane https://trmm.net/PDP-11 I see this is not a simple little thing. Working to find more GC cards now. Thanks b -- @ BillDeg: Web: vintagecomputer.net Twitter: @billdeg <https://twitter.com/billdeg> Youtube: @billdeg <https://www.youtube.com/user/billdeg> Unauthorized Bio <http://www.vintagecomputer.net/readme.cfm>

10 years

VGA Error Code from DECpc AXP 150 (Jensen)

by robert.jarratt＠ntlworld.com

I am hoping to install Windows NT 3.1 on my Jensen. Unfortunately I am getting an error code relating to VGA. The tech docs I have make no mention of this code, anyone know what it means: VGA ?? 06 0020 Regards Rob

10 years

Hamvention

by alexmcwhirter＠triadic.us

Anyone spot anything list related at hamvention? I'm around trying to find anything cool. Particularly sun and ibm stuff. Sent from my T-Mobile 4G LTE Device

10 years

Hamvention

by alexmcwhirter＠triadic.us

I picked up one of those power systems, the other was gone before I got to it. The only things I can add are an amiga and tons of cisco network gear. Not a whole lot this year I suppose. Sent from my T-Mobile 4G LTE Device -------- Original message -------- From: Brian Marstella <brian at marstella.net> Date: 5/22/2016 12:09 AM (GMT-05:00) To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> Subject: Re: Hamvention After Alex mentioned it, I'd thought about driving up if anyone saw anything of interest, but sounds like there isn't a great deal to pick from for older computers. I really can't justify the drive anyway, this year... Brian KI4GTD On Sat, May 21, 2016 at 11:48 PM, Jerry Weiss <jsw at ieee.org> wrote: > I saw one Altair 8800 and one TRS-80 III out in the swap fest.? Some more > recent power (5?) series, but that?s about it. > > Jerry WB9MRI > > > > On May 20, 2016, at 1:18 PM, Alex McWhirter <alexmcwhirter at triadic.us> > wrote: > > > > > > > > > > Anyone spot anything list related at hamvention? I'm around trying to > find anything cool. Particularly sun and ibm stuff. > > > > Sent from my T-Mobile 4G LTE Device > >

10 years

Making MAINDEC paper tapes with a 33 ASR

by chd＠chdickman.com

I need to make some paper tapes of the diagnostics for my PDP-8/e. I built an RS232/current loop interface and have it working I think Did anyone else notice that the standard cable to connect the M8655 to a tty uses shielded twisted pair cable, but doesn't have the signal pairs in the twisted pairs? This same cable is used with the DL11 too. -chuck

10 years

MINC is going to Pete Turnbull

by spedraja＠gmail.com

Congratulations, Pete. I'd like to put some day my hands in one of these but work and distance (Spain) make it complicated. Perhaps in some years >from now. Kind Regards Sergio

10 years

MSI 6800

by vintagecomputer＠bettercomputing.net

Thanks Kip! I did manage to get it going. Turned out the switches for baud rate are not labelled accurately. It has a monitor called Weebug.. no idea how to operate it. :) ?Hoping it's similar to SWTBUG, MIKBUG etc. Brad Sent from my Samsung device -------- Original message -------- From: Kip Koon <computerdoc at sc.rr.com> Date: 2016-05-21 4:29 AM (GMT-08:00) To: "'General Discussion: On-Topic and Off-Topic Posts'" <cctalk at classiccmp.org> Subject: RE: MSI 6800 Hi Brad, I found these two links.? I hope they help. < http://www.old-computers.com/museum/computer.asp?st=1&c=732> < http://www.hinkles.us/chuckbo/MSI-6800/index.htm> Take care my friend. Kip Koon computerdoc at sc.rr.com http://www.cocopedia.com/wiki/index.php/Kip_Koon > -----Original Message----- > From: cctalk [mailto:cctalk-bounces at classiccmp.org] On Behalf Of Brad H > Sent: Friday, May 20, 2016 10:31 AM > To: General Discussion: On-Topic and Off-Topic Posts > Subject: MSI 6800 > > > > Hi there, > I have acquired an MSI 6800 (SS50) computer and am trying to figure out how to get it going.? I am reaching out everywhere hoping to > find someone with knowledge of these as I have searched around extensively and cannot find a manual. > With a null modem cable connected to a PC I can get a response from the computer by typing things or resetting it, but the output is > garbled.? I know the baud rate but at present have no way to determine the other settings like bit, parity, etc. > Any help/advice would be appreciated! > Brad > Sent from my Samsung device

10 years

MINC is going to Pete Turnbull (tony duell)

by mark＠matlockfamily.com

> I would hope whoever gets it is prepared to exchange information. There is no > software with my machine, of course. Pete, Congrats! Once you pick up the system feel free to contact me about getting copies of the limited software I have for the MINC at this time. They are great systems to experiment with. Mark Matlock > > In case anyone is worried I am keeping 2 MINCs myself. One is an RL01-based > one that I have pulled the CPU, RAM and Bootstrap cards from and hung it off > a DW11-B (Unibus-Qbus interface) on a PDP11/45 (yes, that does work!). I've not > got the 11/45 running after the house move, but it is all there and sorting it out > is just a matter of time The other MINC is a MINC-23 (PDP11/23 CPU board), > with an RX02. I am also keeping at least one of every MINC module I have > ever owned, including MNCAG (analogue preamplifier) and MNCTP > (thermocouple interface). Tony, Using a DW11-B to connect the MINC to a PDP-11/45 sounds fantastic! What a neat idea! I have all the MINC modules except the MNCTP thermocouple interface and the MNCAM analog mux. With the modified BDV11 I've been able to boot 11/03, 11/23 and 11/73 CPUs. I run either RT-11 and RSX11M by changing MicroSD cards on the UC07 / SCSI2SD drives (configured as 4 150 MB drives). I understand some MINC-23s ran RSX and would love to find any drivers for RSX and the MINC modules. Mark Matlock

10 years

Best LCDs for retrocomputing - Was: Re: New *square* 1:1 26.5"LCD monitor 1920x1920

by robert.jarratt＠ntlworld.com

I tried the Dell on my Rainbow, but unfortunately it did not work. Looks like I would need the scan doubler that was mentioned. Regards Rob > -----Original Message----- > From: cctalk [mailto:cctalk-bounces at classiccmp.org] On Behalf Of Rob Jarratt > Sent: 17 May 2016 07:31 > To: Ian Finder <ian.finder at gmail.com>; General Discussion: On-Topic and > Off-Topic Posts <cctalk at classiccmp.org> > Subject: RE: Best LCDs for retrocomputing - Was: Re: New *square* 1:1 > 26.5"LCD monitor 1920x1920 > > I?ll let you know in a few days when I get back home. > > Regards > > Rob > > Sent from my Windows 10 phone > > From: Ian Finder > Sent: 16 May 2016 23:48 > To: Jarratt RMA; General Discussion: On-Topic and Off-Topic Posts > Subject: Re: Best LCDs for retrocomputing - Was: Re: New *square* 1:1 > 26.5"LCD monitor 1920x1920 > > Addendum- > > This thread (http://www.vogons.org/viewtopic.php?f=46&t=44692) seems > to indicate the 2007FP CAN do 15hkz on the VGA / RGB input... so maybe > you're all good. Anyone here want to test? > > On Mon, May 16, 2016 at 3:46 PM, Ian Finder <ian.finder at gmail.com> wrote: > This post: http://www.vcfed.org/forum/archive/index.php/t-16744.html > Seems to indicate that the Rainbow is a 15khz sync signal, more akin to > normal interlaced video- which I called out in my other post as being the > one type of signal that doesn't always work for these displays. > > You may find success using a GBS-8220 scan-doubler, (ebay, c. $28 > USD), perhaps with a sync-strainer circuit to feed the SoG signal to the Scan > Doubler as composite sync, if it doesn't work directly with the 2007FP. > > Curious to hear what you figure out. > > > > On Mon, May 16, 2016 at 3:25 PM, Jarratt RMA > <robert.jarratt at ntlworld.com> wrote: > > > > > On 16 May 2016 at 22:52 Adrian Graham > ><witchy at binarydinosaurs.co.uk> > > wrote: > > > > > > On 16/05/2016 20:13, "Ian Finder" <ian.finder at gmail.com> wrote: > > > > > I dunno if it's relevant or not, but my go-to LCD for retro > >stuff is the > > > Dell 2007FP- > > > There was a panel lottery, some are TN, some IPS. Both are solid. > > > > > > They are 4:3, 1600x1200 native. > > > > > > They have DVI, VGA, Composite and S-Video inputs, and very > >stellar > > > scalers. > > > > In fact there was one available for ukp35 so it's now mine. I > >remember these > > monitors from a few years ago at a customer that specialised in > >video for > > aeroplanes, I used one not quite daily but remember being irked at > >the time > > that it was several button presses needed to get from VGA to DVI > >input, > > hahaha. > > > > > He had another one at that price (the last one apparently), so I have bagged > that one. I tried my Viewsonic, which does SoG, on my Rainbow at the > weekend, but that didn't work, perhaps this will. Even if it doesn't it will still > be a good second monitor for my everyday PC. > > Regards > > Rob > > > > -- > Ian Finder > (206) 395-MIPS > ian.finder at gmail.com > > > > -- > Ian Finder > (206) 395-MIPS > ian.finder at gmail.com

10 years

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test-drb