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KK11-A / PDP-11/34 Cache module print set

by jnc＠mercury.lcs.mit.edu

> From: Marc Howard > what's the difference between a KK11-A and KK11-B? KK11-A -> -11/34 KK11-B -> -11/44 Noel

8 years, 7 months

KK11-A / PDP-11/34 Cache module print set

by jnc＠mercury.lcs.mit.edu

> From: Mattis Lind > I have now scanned the MP00574 / KK11-A printset I have received. Thank you very much for doing that! Those prints were one of the main missing PDP-11 print sets. > Hope the quality is good enough. It looks good to me. Noel

8 years, 7 months

ADV11-A vs. ADV11-C and 22-bit Bus

by mark＠matlockfamily.com

I have an ADV11-A that I would like to use in a Q22 RSX11M+ system. The ADV11-C will work in a 22-bit Bus system from what I understand but the ADV11-A was made for 18 bit Bus systems. In the OEM Micronote book, Note 5, it states: Any device which uses backplane pins BC1, BD1, BEl, BF1 or DC1, 001, DEl, OF!, for purposes other than BDAL18-21 is electrically incompatible with the 22-bit bus and may not be used without modification. Further down it lists the ADV11-A as a device that does not meet the requirements for a Qbus 22-bit system because: ADV11 (A012). A/D Converter. (Use of BC1 for purposes other than BDAL18) When I look at the Board connector B pin C side 1 (component side) the BC1 pin is tied to ground. Several other pins are also tied to ground on that connector such as BC2, BJ1, and BT1. Other than BC1 which is BDAL18 being tied to ground the pins BDAL19 (BD1), BDAL20 (BE1), And BDAL21 (BF1) are all not connected to anything. This also matches the field engineering print for ADV11-A (B-TC-ADBV11-A-1) where BC1 is shown tied to ground on page 21. So it looks like if I simply cut the trace between the BC1 finger and its connection to ground on the board it would become Q22 compatible. Is it that simple? Thanks, Mark Matlock

8 years, 7 months

RK05 rear filters/brackets

by jnc＠mercury.lcs.mit.edu

> From: Fritz Mueller > My restored RK05 drives are missing their rear air filters (the ones that > cover the back of the card cage). The formal DEC name is "prefilter" (since the air that comes in here goes through the cards, and the air blower, and then through the absolute filter on the way to the pack), and the metal thing that holds it on is the "frame". > I'd really appreciate a few photos so I can see what these looked like > and how they were put together? Here you go: http://gunkies.org/wiki/RK05_disk_drive#Prefilter_frame pictures and all the dimensions I could think of to measure. (I didn't bother with the hole locations, since you can get them off the drive.) The little hand-knob-bolts are DEC standard (used elsewhere too). Noel

8 years, 7 months

RK05 rear filters/brackets

by fritzm＠fritzm.org

My restored RK05 drives are missing their rear air filters (the ones that cover the back of the card cage). I would like to fashion some sort of replacements. If anybody here has access to drives with the original filters, I?d really appreciate a few photos so I can see what these looked like and how they were put together? cheers, ?FritzM.

8 years, 7 months

KK11-A / PDP-11/34 Cache module print set

by mattislind＠gmail.com

I have now scanned the MP00574 / KK11-A printset I have received. https://drive.google.com/open?id=0B-rp4vyPPYu1U0tvT0Q5enFpVkZYSW5mMUV4dnJPQ… Hope the quality is good enough. BTW. I am looking for the H8822 over the top connector. I just ask here in case anyone has a spare. Otherwise it wouldn't be that much of a hassle to make my own. I do have the H8821 as a trade in case that is of interest. /Mattis

8 years, 7 months

SCSI Controller Hanging...

by harper＠secureoutcomes.net

Hello Plamen - I use the SCSI controller that is built into the MVME177 transition module. No, when I RESET the system, I just press the RESET button on the processor board - usually when it is hung with my software. On this system, I only code in 68K assembly and so I do see the "occasional" hang :) Is the "SCSI reset option" part of the 68K/BUG RESET command? In my documentation - and I easily may not have the latest documentation - I only see RESET options to force a COLD or WARM start on hardware RESET. The documentation that I have also cautions: "...may cause the disk controller to be out of phase with respect to the disk configuration tables in memory", which certainly makes sense. However, I do not modify any of those tables from system default. I appreciate your input. Regards, Jack Evergreen, Colorado At 11:57 AM 1/23/2018, Plamen Mihaylov wrote: >What SCSI controller are? you using - MVME320, 327 or 328 ? >Do you reset the MVME177 board using RESET >command from 177bug> along with SCSI bus reset? option? > >Best regards, >Plamen > > >On Tue, Jan 23, 2018 at 6:33 PM, Jack Harper via >cctalk <<mailto:cctalk at classiccmp.org>cctalk at classiccmp.org> wrote: > >Greetings to the List from the Snowy Rocky Mountains. > >Beautiful clear sunny day here at +9F :) > >The SCSI controller on the 68K development >system (VMEbus) that I have cobbled together >occasionally hangs after I reset one of the >processor boards (there are four MVME177-005 68060 boards in the VME rack). > >The hang then happens when my software touches >the SCSI drives via the ROM'd 68K/Bug I/O >primitives and the hang will not go away even >after another reset until I cycle power. > >I have never before dealt with SCSI as a >programmer - does this sound like something is configured incorrectly? > >There is not much to configure. > >I point out that I am not certain that I have >the termination resistors correct. > > >Thoughts? > >I appreciate any advice. > > >Regards, > >Jack >Evergreen Colorado > > > > > >---------------------------------------------------------------------------------- >Jack Harper, President >Secure Outcomes Inc >2942 Evergreen Parkway, Suite 300 >Evergreen, Colorado 80439 USA > ><tel:303.670.8375>303.670.8375 ><tel:303.670.3750>303.670.3750? (fax) > ><http://www.secureoutcomes.net>http://www.secureoutcomes.net >for Product Info. > ---------------------------------------------------------------------------------- Jack Harper, President Secure Outcomes Inc 2942 Evergreen Parkway, Suite 300 Evergreen, Colorado 80439 USA 303.670.8375 303.670.3750 (fax) http://www.secureoutcomes.net for Product Info.

8 years, 7 months

New DEC items from Sellam's collection for sale

by sellam.ismail＠gmail.com

Hey DEC-heads! I added some more boards to my DEC list: http://www.vcfed.org/forum/showthread.php?61371-Sellam-s-DEC-Hardware-Softw… Please inquire directly via e-mail to <sellam.ismail at gmail.com> for fastest response. Thanks! Sellam

8 years, 7 months

Interest in Teac FD235J drives and FC-1 boards?

by cclist＠sydex.com

I've got a fellow with a stock of Teac FD235J (2.88) drives and about a dozen bare Teac FC-1 SCSI boards. I'm trying to gauge interest--I don't think he wants to sell them onesy-twosy, but I'm willing to act as intermediary for single-unit purchases if there is sufficient interest. --Chuck

8 years, 7 months

Televideo keyboards

by sales＠elecplus.com

I am clearing these out of my stock: 4 are beige, with no PN on the back. They have a small RJ9 type connector. 3 are missing one or more caps. 4 are dark on top, and beige on the back. There is no PN. These have the save telephone style connector. All are complete. These have not been tested or cleaned. I would love ro send all 8 of these to 1 person J Pics can be seen here: https://drive.google.com/drive/folders/1GvCajMJk1EeSLjpGnl4LsGbJPH6l-B2H?usp =sharing Cindy Croxton Electronics Plus 1613 Water Street Kerrville, TX 78028 830-370-3239 cell sales at elecplus.com --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus

8 years, 7 months

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