test-drb January 2008

test-drb@ccmp.vtda.org

221 participants
430 discussions

Looking for old issues of Datamation, late 60's with Fairchild/SEL Advertisement

by aek＠bitsavers.org

> Somewhere around '68 there was an Ad by Fairchild semiconductor showing >a SEL minicomputer. I've updated http://bitsavers.org/pdf/sel with a bunch more manuals, and some Datamation SEL ads >from 1965 and 1967. I didn't see any Fairchild ads in 1968 or 69 showing a SEL machine.

18 years

Quirky computer collectors?

by jfoust＠threedee.com

I received this inquiry via another mailing list. I think it's legit. They're coming to the USA looking for "quirky" people. Might there be a classic computer collector they should feature? - John From: Rebecca Rusz Sent: Thursday, January 17, 2008 7:06 AM To: jzd at cvctv.org Subject: Att: extraordinary people Im Rebecca Rusz and I work with research for a swedish TV show called "the 100 most extraordinary people". We are producing the 6th season now, this time in America. The team consists of our two TV hosts Philip and Fredrik, a segment producer nad a photographer. They travel across the states meeting offbeat/quirky people in order to find americas most extraordinary person. My hope is that they will travel to Illinois at the end of January beginning of february, meeting people. Why Im contacting you is that I know that public access tv have a lot of quirky people, so Im wondering if you could help me digging up some people for us? We need the people who are quirky IRL and not just in front of the camera. Thank you in advance. If you want, leave your direct number and I can call you back to discuss some more. Looking forward hearing from you soon. Rebecca Rusz Research

18 years

Interesting search on Flickr (really it is on topic)

by jwstephens＠msm.umr.edu

I didn't realize I had a lot of time to kill tonight and put in "interdata" into flickr.com's search. It hits photos taken at a 2005 reunion which apparently was for Interdata, Perkin Elmer, and Concurrent ex employees. Probably from someone on this list, though the name didn't ring a bell. I won't post it here for privacy's sake in case the people who are mentioned would like not to be spammed. There are some nice photos of vintage equipment in the pile, which leads to other photo collections ... I have seen others mention lists for Dec equipment as well, but had not seen Interdata mentioned or searched for. Jim

18 years

Reading Polymorphic double density double sided disk

by dm561＠torfree.net

----------Original Message: Date: Sat, 19 Jan 2008 21:31:40 -0800 From: dwight elvey <dkelvey at hotmail.com> Subject: RE: Reading Polymorphic double density double sided disk > From: dm561 at torfree.net > > Date: Fri, 18 Jan 2008 18:20:45 -0800 > From: dwight elvey > Subject: Reading Polymorphic double density double sided disk. > > >>Is there an easy way to separate track from sector using Z80 code? >>Dwight > > ---------- > Might be easier in hardware with a monostable or two; if you're interested, > the Vector Graphic 10 sector HS Micropolis FDC manual on Howard's site > might be a useful read (schematics, timing diagrams, etc.): > > http://www.hartetechnologies.com/manuals/Vector%20Graphics/ > Vector_Micropolis_Disk_Controller_Tech_Manual.pdf > Hi Mike I already have a index, sector seporator. I built it with a 7438, 7414 and 2 555's. It works fine. One could use a single 556 but 555s are easier to find. What I mean is that the disk has index into the disk as 0 to 799 sectors. The disk is 10 sectors so one needs to divide this index by 10 to get the track number and the remainder is the sector number. The original code handle a 32 sectored disk. Because 32 is a power of 2, doing the calculations were much easier. Divide by 10 is not as easy. See my next post. If anyone wants a schematic of my index, sector pulse seporator, I can scan it and send it out. Dwight -----------Reply: Oops; careless reading on my part; I'd read "separate *index* from sector," instead of "track." Probably because I've been playing with the opposite, generating HS sector pulses from the index, also with 555s... mike

18 years

SC/MP

by ajwills＠paradise.net.nz

In case anyone is interested ;-), I have moved my echo of Sipke de Wal's old website (xgistor.ath.cx) to http://www.xgistor-echo.mydyn.net (I had hosted it at xgistor-echo.ath.cx for two years but they seemed to want people to pay after two years free dns routing). (for those who hadn't seen it - He had a big collection of datasheets, emulators etc, and some stuff about SC/MP processor and TI-59 calculator that I haven't seen elsewhere) -- Tony (no, not *that* Tony, another one :-)

18 years

are IBM RS/6000 40-bit 72-pin SIMMS ECC standard?

by compoobah＠valleyimplants.com

I have some 16MB IBM "40-bit" memory modules out of an RS/6000 (the 7012/370 or 7030/3CT compatible type). Roy's looking for some ECC SIMMS for a RAID controller. Does anyone know if these are standard ECC or proprietary? I know they are a different pinout than 32 or 36- bit 72-pin SIMMs. I've heard proprietary, same as the HP-9000 memory modules (very hard to believe looking at the ones that go in my C180), and standard ECC SIMMS - and they can't all be right.

18 years

Reading Polymorphic double density double sided disk

by dm561＠torfree.net

Date: Fri, 18 Jan 2008 18:20:45 -0800 From: dwight elvey <dkelvey at hotmail.com> Subject: Reading Polymorphic double density double sided disk. <snip> >Is there an easy way to separate track from sector using Z80 code? >Dwight ---------- Might be easier in hardware with a monostable or two; if you're interested, the Vector Graphic 10 sector HS Micropolis FDC manual on Howard's site might be a useful read (schematics, timing diagrams, etc.): http://www.hartetechnologies.com/manuals/Vector%20Graphics/ Vector_Micropolis_Disk_Controller_Tech_Manual.pdf mike

18 years

Disk formatting programs

by rcini＠optonline.net

All: I?ve completed the rehab and reconstruction of a CompuPro Disk 1 system for my IMSAI, creating a new system master from scratch. I?ll have a Web page about it up shortly. Anyway, I only have a simple disk formatting program that?s built into the monitor ROM. I?ve heard that some specific versions of CP/M have formatting programs but I can?t locate the source for one that?s appropriate for the Disk 1 controller (which is based on the 8272 VLSI). I can make the ROM version into a simple COM file, but I thought I?d poll the group before building it myself. Does anyone have the source code or a pointer to one? Thanks. Rich -- Rich Cini Collector of Classic Computers Build Master and lead engineer, Altair32 Emulator http://www.altair32.com http://highgate.comm.sfu.ca/~rcini/classiccmp

18 years

*Brand New* Sega/Yeno F.S.

by chrism3667＠yahoo.com

I have 2 I've acquired recently. I only want to sell one. 150$ + shipping. look here: http://old-computers.com/museum/computer.asp?st=1&c=1096 ____________________________________________________________________________________ Never miss a thing. Make Yahoo your home page. http://www.yahoo.com/r/hs

18 years

PDP 11 rescue.

by silvercreekvalley＠yahoo.com

Hi, I'm trying to rescue/restore a PDP 11/34A. The basic CPU looks to be in a good state, its been stored well. What I'd like to do is make up a small 19" rack of some kind (was this the DEC 'corporate' rack) or a regular rack if I cant find that, and add a suitable 11/34A compatible disk drive. I have a suitable VT. The 11/34A has a good selection of tape and disk interface cards so an RL02 or similar would probably work fine. Does anyone have anything available for sale or trade in the UK preferably. I can collect of course. I have plenty of PDP QBUS spares for trade if that's of interest - just no disks or racks. Thanks! Ian. ____________________________________________________________________________________ Looking for last minute shopping deals? Find them fast with Yahoo! Search. http://tools.search.yahoo.com/newsearch/category.php?category=shopping

18 years

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test-drb January 2008