test-drb November 1999

test-drb@ccmp.vtda.org

211 participants
749 discussions

PDP11 spotted today in Sunnyvale CA for SALE

by jeff.kaneko＠juno.com

On Sat, 27 Nov 1999 08:58:54 -0500 "John B" <dylanb(a)sympatico.ca> writes: >Weird Stuff Warehouse still exists??? > >I ordered our SMD-SCSI adaptec board there (back in 90).... everyone >was >laughing at me when I put the order through Supply and Services. Back then, they were a good supplier. We used to get our ACB-4000's, 4070's, and 4525's from them. While I was living in San Jose a few years back, they started carrying mostly peecee stuff. I got boring to go there after that. Jeff ___________________________________________________________________ Get the Internet just the way you want it. Free software, free e-mail, and free Internet access for a month! Try Juno Web: http://dl.www.juno.com/dynoget/tagj.

25 years

Whats the screwiest thing you collect?

by jeff.kaneko＠juno.com

On Sat, 27 Nov 1999 04:30:26 -0500 Dave McGuire <mcguire(a)neurotica.com> writes: >On Sat, 27 Nov 1999, B'ichela wrote: >>On Fri, 26 Nov 1999 SUPRDAVE(a)aol.com wrote: >> >>> as for myself, beer cans and antique outboard motors 1960 and >earlier. >>> >> I collect old Records and 8 track tapes I activly listen to >both >>formats. > > Ok, *now* I'm scared. ;) Be *very* scared. I do the same thing. Jeff ___________________________________________________________________ Get the Internet just the way you want it. Free software, free e-mail, and free Internet access for a month! Try Juno Web: http://dl.www.juno.com/dynoget/tagj.

25 years

DG house numbered part xref/help with what *looks* like a mux...

by CLASSICCMP＠trailing-edge.com

>Pat of this is prompted by a part (not *yet* suspect) I ran >across on a Nova 800 CPU1 board. From the prints it looks >like it's a a quad 2-input mux like a 74158, but the >pinouts are completely different and it's got wired-or >outputs suggesting OC outputs. Select and enable are on >9 and 7 (I may have those switched); 1 = i0a, 2 = i0b, >3 = ya, 4 = yb, 5 = i1b, 6= i1a, 10 = i2a, 11 = i2b, >12 = yc, 13 = yd, 15 = i3a, 14 = i3b > >Of course, that's just the way it's drawn. It could be somewhat >different :-) We're pretty sure you're talking about the 8234, and this is what's said about it in the Nova 800 Technical Manual: Truth table: S0 S1 FN 0 0 !B 1 0 !A 0 1 !B 1 1 1 Pinout: 1 A0 2 B0 3 F0 4 F1 5 B1 6 A1 7 S1 8 Gnd 9 S0 10 A2 11 B2 12 F2 13 F3 14 B3 15 A3 16 Vcc Does this make any sense? -- Tim Shoppa Email: shoppa(a)trailing-edge.com Trailing Edge Technology WWW: http://www.trailing-edge.com/ 7328 Bradley Blvd Voice: 301-767-5917 Bethesda, MD, USA 20817 Fax: 301-767-5927

25 years

Whats the screwiest thing you collect?

by edick＠idcomm.com

IMHO, it makes little sense to retain media for washing-machine-sized disk drives if you don't retain the drives and maintain them in order to retain the value of the media. Hindsight is always 20/20, but wouldn't it make sense to archive data/software on an archival medium, likely, we hope, to remain useable over time, rather than to store it on what's intended for on-line storage, and is likely to become obsolete within a couple of years of when it was developed? The reason these gargantuan drives are no longer around is because it was costly and laborious to maintain them in useable condition, with a routine failure frequency of more than one per week. If you're ever able to recover your data, you can probably store all the software that ever existed for that system on a single 8mm cartridge which will fit in your shirt pocket. Dick -----Original Message----- From: Al Kossow <aek(a)spies.com> To: Discussion re-collecting of classic computers <classiccmp(a)u.washington.edu> Date: Saturday, November 27, 1999 12:26 PM Subject: Re: Whats the screwiest thing you collect? >> Something I've been wondering about. These boards look to have been used >> to convert ESDI to SCSI for stuff like Apollo's and Sun's. Could they be >> used to convert a SCSI drive to work on an ESDI controller? > > >This is actually a subset of a much more interesting general problem, using >modern storage devices as substitutes for older ones. This is a serious issue >for systems that use 'washing machine' disc drives (pre-SMDs, like Trident or >Memorex interfaces) where, unless you were REALLY careful, you'd end up with >a big pile of crashed heads and aluminum dust the first time you spun up a >disc drive that has been sitting in some warehouse for 20+ years. > >I have several dozen 80 and 300 meg disc packs that I've had for over 10 years >now that I'm scared to put into a drive, for fear of losing everything that's >on them... > >The past month or so, I started calling all the old 'data recovery' places, and >even THEY threw out the equipment to fly a head over these old packs.. >

25 years

Whats the screwiest thing you collect?

by aek＠spies.com

> Something I've been wondering about. These boards look to have been used > to convert ESDI to SCSI for stuff like Apollo's and Sun's. Could they be > used to convert a SCSI drive to work on an ESDI controller? This is actually a subset of a much more interesting general problem, using modern storage devices as substitutes for older ones. This is a serious issue for systems that use 'washing machine' disc drives (pre-SMDs, like Trident or Memorex interfaces) where, unless you were REALLY careful, you'd end up with a big pile of crashed heads and aluminum dust the first time you spun up a disc drive that has been sitting in some warehouse for 20+ years. I have several dozen 80 and 300 meg disc packs that I've had for over 10 years now that I'm scared to put into a drive, for fear of losing everything that's on them... The past month or so, I started calling all the old 'data recovery' places, and even THEY threw out the equipment to fly a head over these old packs..

25 years

Whats the screwiest thing you collect?

by jeff.kaneko＠juno.com

I collect bridge boards. I can't help it-- I have a fetish for bridge boards. All makes: Emulex, DTC, Xebec, WD, Adaptec, etc. All kinds of configurations: Cpu<->MFM (ala wd-1000), SASI<->MFM, SCSI<->ESDI, SASI<->QIC30, all kinds. The SCSI<->SMD configuration still eludes me, however. I know they exist (Adaptec ACB-55xx), though I've never seen one. Docs are *really* hard to get. Still looking for the docs for the Emulex MD-23, possibly the best darned SCSI<->ESDI bridge ever made: Handles four drives at up to 24MHz data rate. Smokin'. 8" drives are interesting to me too, but I haven't seen too many in this neck of the woods. On Thu, 25 Nov 1999 23:48:11 -0800 Mike Ford <mikeford(a)socal.rr.com> writes: >I am just wondering what some of us collect that we consider the >screwiest >ourselves. For example, for reasons I can't fathom I have started >collecting Apple logo AC power cords, and have a couple dozen of >various >styles now. > > ___________________________________________________________________ Get the Internet just the way you want it. Free software, free e-mail, and free Internet access for a month! Try Juno Web: http://dl.www.juno.com/dynoget/tagj.

25 years

I have a tashiba 5100

by jdtoys＠progressivetel.com

I need a boot disk for an old laptop computer? Allen Mason

25 years

CP/M-80 drivers for WD33C93 ???

by edick＠idcomm.com

The databook's not the problem. I've got a couple of those. It's the fact that I'm looking at a one-of, and would prefer not to generate a whole code set if someone already has done work they' be willing to share. Since I have a plurality of these chips on hand, and since they'll drive the cable directly, requiring very few parts to complete the job, I'd like to use this device for the current task as a prelude to using it in the future. I've never had to write drivers for the thing myself, so I haven't any archived code I can go back to study. Dick -----Original Message----- From: Bruce Lane <kyrrin(a)bluefeathertech.com> To: Discussion re-collecting of classic computers <classiccmp(a)u.washington.edu> Date: Saturday, November 27, 1999 9:57 AM Subject: Re: CP/M-80 drivers for WD33C93 ??? >At 00:03 27-11-1999 -0700, you wrote: > >>Has anybody got a CP/M-80 BIOS driver example for the WD33C93 SCSI >>controller? I'd surely like to look at one or two. Format utility stuff >>would be good, too. > > I'm pretty sure I have the databook that covered the 33C93. Would you like >me to run off some copies of the datasheets? > > >-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- >Bruce Lane, Owner and head honcho, Blue Feather Technologies >http://www.bluefeathertech.com // E-mail: kyrrin(a)bluefeathertech.com >Amateur Radio: WD6EOS since Dec. '77 >"Our science can only describe an object, event, or living thing in our >own human terms. It cannot, in any way, define any of them..."

25 years

DG house numbered part xref/help with what *looks* like a mux...

by CLASSICCMP＠trailing-edge.com

>I was wondering if anyone has a DG house number to generic >part cross reference somewhere (if not I suppose I'll start one). Actually, yes, there is such a reference. It's a few hundred pages, and has pinouts for many "custom" DG chips. My copy is out on permanent loan, but if you get me the house number on the chip I'll have the current holder look it up for you. >Pat of this is prompted by a part (not *yet* suspect) I ran >across on a Nova 800 CPU1 board. From the prints it looks >like it's a a quad 2-input mux like a 74158, but the >pinouts are completely different and it's got wired-or >outputs suggesting OC outputs. Select and enable are on >9 and 7 (I may have those switched); 1 = i0a, 2 = i0b, >3 = ya, 4 = yb, 5 = i1b, 6= i1a, 10 = i2a, 11 = i2b, >12 = yc, 13 = yd, 15 = i3a, 14 = i3b > >Of course, that's just the way it's drawn. It could be somewhat >different :-) > >Does this part sound familiar to anyone? Um, what *is* the DG house number on this chip? If you had a time machine you could go back 20 years and buy a bunch of rejected versions of this chip, complete with DG house number, from Poly-Paks, I bet :-). -- Tim Shoppa Email: shoppa(a)trailing-edge.com Trailing Edge Technology WWW: http://www.trailing-edge.com/ 7328 Bradley Blvd Voice: 301-767-5917 Bethesda, MD, USA 20817 Fax: 301-767-5927

25 years

CP/M-80 drivers for WD33C93 ???

by edick＠idcomm.com

Has anybody got a CP/M-80 BIOS driver example for the WD33C93 SCSI controller? I'd surely like to look at one or two. Format utility stuff would be good, too. Any source code will be eagerly looked at. thanx Dick -----Original Message----- From: B'ichela <mdalene(a)home.ctol.net> To: Discussion re-collecting of classic computers <classiccmp(a)u.washington.edu> Date: Friday, November 26, 1999 11:39 PM Subject: Re: do you still need XT parts? >On Fri, 26 Nov 1999, Tony Duell wrote: > >> [...] >> >> > I will summarise the pieces I am looking for below in detail: >> >> [...] >> >> > 1 Cassette cable for the IBM-PC computer >> >> I believe this is the same cable as is used with most models of TRS-80 >> (1/3/4/CoCo/M100/etc). So you could use one of those (which I assume are >> fairly easy to find) if you can't get the official IBM cable (did it exist?) >> >> -tony >> > Having both a Model 102 and a Tandy Coco 1,2 and 3 I have two of >those cassette cables you mentioned. now I only need to save some money to >buy a working cassette recorder. > Reguarding this. If I could find the basica.com file for the Xt on >a pcdos disk. does this wrapper/patcher allow the support of the cassette >unit in addittion to the disks or only the disks? If by default basica.com >only patched the rom basic to use disks. how do you port files from >cassette tape to disk? > > A pearl of wisdom from the y2K newsgroups: >------------------------------------------------------------------------- >Y2K appears to be the Baby Boomers mid-life crisis, and it has the >potential to be a dandy. > -- Anonymnous -- >-------------------------------------------------------------------------- > > B'ichela > >

25 years

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test-drb November 1999