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ISO OSF/1 books

by aek＠bitsavers.org

I have a small collection of the Prentice-Hall OSF/1 book series, does anyone have copies they don't need?

5 years, 2 months

DEC ADV11-D Analog to Digital converter with DMA

by mark＠matlockfamily.com

I recently acquired an ADV11-D Qbus A/D board and having been working on a RSX11M+ driver for it. It is similar enough to the ADV11-C that the driver I wrote for the -C works ok, but the -D is DMA capable. It seems to have two extra CSR registers in addition to the CSR, and read buffer. Does anyone have documentation for this board? It is mentioned in the Oct. 88 Microsystems Option Guide and both RSX and VMS supported it. It was also mentioned in the Dec 92 Real Time Products Technical manual. It has a 40 pin IDC connector that appears to have some amount of differences from the ADV11-C and no where have I seen any info on the DMA capability. Does anyone have a ADV11-D user manual or XXDP source code for testing it? Thanks, Mark

5 years, 3 months

Identifying a Mystery ISA Card

by w9gb＠icloud.com

Sean, Fred, and Glen ? Sorry, late to this ISA card thread. I worked in Tech Support for an Apple/IBM/HP/Novell retail computer dealer, during summers in early 1980s, when in Graduate school. So I saw the ?wide selection? of add-in cards for IBM PC/XT and compatibles. == This is a ?Taiwanese generic 6-Pak? Add-In (8-bit ISA) expansion card. RAM 384 kB; Serial port, Parallel port, Game port, AND Real Time Clock ! Glen is CORRECT, the National Semiconductor MM58167 is the RTC IC. Texas Instruments bought out National in 2011, data-sheet still available. The ?solder-in? B1 battery has been cutout (open space below/left of MM58167). Replacement battery (likely ~ 3 to 3.6 Volt) can be acquired from Digi-Key. Take measurements and closeup photo of ?B1? Area, to CONFIRM Model and Size. ? My Quick Guess ? Tadiran TL series 1/2 AA with Axial pins, 3.6V High Capacity Cylindrical battery http://www.tadiranbat.com/assets/tll-5902.pdf Tadiran TL-5902/P .... $6.65 https://www.digikey.com/en/products/detail/tadiran-batteries/TL-5902-P/5125… greg, w9gb chicago === Date: Thu, 15 Oct 2020 17:34:58 -0700 From: Glen Slick <glen.slick at gmail.com> To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> Subject: Re: Identifying a Mystery ISA Card On Thu, Oct 15, 2020, 5:24 PM Fred Cisin via cctalk <cctalk at classiccmp.org> wrote: >> On Thu, 15 Oct 2020, Sean Ellis via cctalk wrote: >> I got this (currently exploded) mystery RAM, RTC, and I/O board out of >> a dead Sanyo luggable the other night, and once I replace the burned >> up tantalums I'd like to put it in my 5150 so I can get a full 640k of >> RAM. >> Question is, does anyone know what this board is? It's a completely >> anonymous board with not even an FCC ID to go off of. I'm assuming the >> RAM is at least strapped right; all the banks are full which should be >> 384k, and the Sanyo was a 256k machine = 640k. >> Here's a couple pictures; one's an actual picture of the card and the >> other is a simplified TULARC/TH99-esque vector of what's on the board. >> https://i.imgur.com/WhO4cco.jpg >> https://i.imgur.com/uBCkv5G.png > > It resembles, although doesn't match, the AST Six-Pack. > But the AST Six-pack had a clock circuit. Isn't the 24-pin DIP part number MM58167 ,shown in the images referenced above, an RTC chip?

5 years, 3 months

Firing up the pdt11

by cz＠alembic.crystel.com

I'm back to working on the PDT11/150 again, the bottom floppy is weird: It doesn't read rx01 disks, period. Top one is fine. So I tried swapping all of the connectors on the control board so the top one was PD1: and the bottom was PD0: Sure enough the top drive works fine as PD1: and bottom is still dead so it's a drive issue. Pull the drive, put in a spare, button it up, and sure enough it still doesn't work. Any ideas? Also I recall my MiniMinc/150 (which is in parts in my shed) had EIS and FIS, but this one only reports FIS. Did DEC make pdp11/03 expansion chips that only had FIS? C

5 years, 3 months

PDP 8/L & 8/I G228 warning

by djg＠pdp8online.com

Noticed in another thread an 8L is upcoming on the persons restoration list. Making separate post so more visible. The G228's have a 20 uF 50V electrolytic capacitor on them. I have had two short. When they short its a race between the trace on the board burning up or the backplane 30 AWG wirewrap wire burning up. One was on an 8/I I was restoring where the backplane wire providing the power burnt up at power on. Wasn't shorted before power on. The other was I saw one G228 had a burnt track while I was washing the cards in an 8/L. I had not applied power at that point so that was old damage. Usage history is unknown. As a minimum I would recommend applying current limited 30V to the capacitor on each card out of the machine before initial power on. Low enough limit may allow the capacitor to reform without shorting. The same part # capacitor is still available for protective replacement. The capacitors don't read shorted before power is applied. Unknown if they will short if the machine is powered on periodically. I've head lots of reports of all the failures in 8/L's. I replaced the one G228 and some bulbs but otherwise the machine was fine. It did need a lot of cleaning and I did do my normal power supply reform and checkout.

5 years, 3 months

AOL CD and other old PC software...

by peter＠vanpeborgh.eu

I have a collection of British magazine CDs and DVDs from the mid-1995ish to 2013ish. They contain tools, programs, etc. I tried 5 and they mounted under Win10 so they should work on old win releases: XP,7,8? Would anyone be interested in acquiring these? Talk to me and we can work out how. peter || | | | | | | | | Peter Van Peborgh 62 St Mary's Rise Writhlington Radstock Somerset BA3 3PD UK 01761 439 234 "Our times are in God's wise and loving hands" || | | | | | | | |

5 years, 3 months

Next project: 11/24. Does it need memory?

by jnc＠mercury.lcs.mit.edu

> From: Ethan Dicks > ODT works from my 11/34 with bad RAM, ?? The -11/34 doesn't have 'real' ODT (like the one in the LSI-11's, KDF11's, KDJ11's), which is in microcode). The M9301 and M9312 bootstrap ROM boars contain a console emulator, but it's in macrocode. Noel

5 years, 3 months

AOL CD and other old PC software...

by wh.sudbrink＠verizon.net

Like most of us, as a result of COVID, I've been mostly stuck at home. Consequently, I've been going through and organizing a lot of boxes of old stuff that just accumulated and I did not consider to be part of my vintage computing collection. However, I have noticed (and chuckled over) the fact that others are collecting computers and software that I "just used". Anyway, I'm finding stuff that I think others may appreciate more than I and I'm wondering about its value. First, I have what I believe is a pretty early AOL CD and I understand that it may be collectable. It includes the original silver, blue and red cardboard sleeve that reads (in part): America Online CD-ROM! IT'S NEW! IT'S FREE! Now with World Wide Web Browser! Any thoughts on this would be appreciated. Most of what I find with Google seems to be related to a boom about five years ago. I have also found boxes full of other software, along with their original packaging. Original DOOM, original Lemmings, Wing Commander, Wing Commander II, Falcon, several old Microsoft Flight Sims, etc., etc. Thanks, Bill Sudbrink -- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus

5 years, 3 months

Next project: 11/24. Does it need memory?

by cz＠alembic.crystel.com

Ok, with the PDT and the RX02's out of the way I'm running down to the wire on fixing stuff before I tackle the 8/L's. Next up is the 11/24, this is one of the 5.25 inch rack mounts with a CPU, KT24, and no memory. First question: Will ODT respond at all with no memory on the Unibus? Second question: Can a 128kw memory board from an 11/34 work in an 11/24? Or do I need one of the 11/44 boards to make it go?

5 years, 3 months

Identifying a Mystery ISA Card

by seanellis9＠gmail.com

Hey all, I got this (currently exploded) mystery RAM, RTC, and I/O board out of a dead Sanyo luggable the other night, and once I replace the burned up tantalums I'd like to put it in my 5150 so I can get a full 640k of RAM. Question is, does anyone know what this board is? It's a completely anonymous board with not even an FCC ID to go off of. I'm assuming the RAM is at least strapped right; all the banks are full which should be 384k, and the Sanyo was a 256k machine = 640k. Here's a couple pictures; one's an actual picture of the card and the other is a simplified TULARC/TH99-esque vector of what's on the board. https://i.imgur.com/WhO4cco.jpg https://i.imgur.com/uBCkv5G.png

5 years, 3 months

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