test-drb April 2003

test-drb@ccmp.vtda.org

272 participants
486 discussions

by anheier＠owt.com

I have this cool little Psion Organizer II, model XP available. It's a 6800 processor powered handheld computer. I have the COM link cable and a 32K Datapak. It appears to be functional. It was made in the UK. Someone out there probably knows the history of this little device. Best offer, please send zip code for shipping costing and I prefer Paypal. Thanks Norm

21 years, 8 months

Free (ish) tape & hard drive

by Lee.Davison＠merlincommunications.com

I have surplus to requirements the following.. FACIT tape drive Model No. 4203 Prod. No. 9281 01 09 .. and .. AMPEX hard drive PYXIS 13 Part No. 3315422-01 Both are of unknown status having been stored in a garage for at least a decade and both show some signs of having been damp at some time (some corrosion). Both are heavy so will cost to post. Anyone interested in these please contact me off list. Lee. ________________________________________________________________________ This e-mail has been scanned for all viruses by Star Internet. The service is powered by MessageLabs. For more information on a proactive anti-virus service working around the clock, around the globe, visit: http://www.star.net.uk ________________________________________________________________________

21 years, 8 months

semi-OT: Power Computing 100 power supply

by cb＠mythtech.net

>I've got a Power Computing 100, one of the earliest Mac clones >(equivalent to Mac 8100/100, though the logic board is physically >different). It seems that its power supply has died. It is a Seasonic >SSH-200G. I'm pretty ignorant about PSU standards, so am not sure what >I need to look for in a replacement -- a friend said "it looks like an >AT power supply, but that little 4-pin plug [which connects to the >logic board, I think] is non-standard, so a standard AT PSU won't work >as a replacement." It also has two large 6-pin plugs that plug into the >motherboard as well. The rest of the plugs are standard 4-pin. If you find out any info, forward it on to me. I recently aquired one of those as well, and the power supply, along with every other cable in it, has had all the wires cut. It looks like someone either was fired and pissed off, so they took their revenge on the machine, or more likely (since the hard drive is missing as well), the machine was officially "decommissioned" and rendered to an unusable state to take it off the books. Before I go thru the effort of patching the leads together, if I can find a suitable, available replacement, I'll go that route for the purpose of testing it to see if the system has been damaged in other ways (then if it works, I'll go back and patch the power supply together, just because it will be fun). I did ask a Power Computing list if the Power100 used a standard AT power supply, and was told that it does not. However, the person that gave me the response spent no effort discussing how it differs, but did spend 3 paragraphs telling me not to waste my time with a Power100 and instead to buy a used PowerTower Pro. So that told me that they just didn't get it, and didn't understand the interest in reviving an old machine... which also makes me suspect the validity of their answer (not that failing to understand old computers equals a lack of knowledge of the power supply... just that it seemed more like an uninterested/uninformed wave off of the power supply question in the effort to push me to a newer faster machine). -chris <http://www.mythtech.net>

21 years, 8 months

DEC keyboard/mouse protocol

by erd_6502＠yahoo.com

Re: recent discussions Found this in section 14.38 of the VMS FAQ: http://h71000.www7.hp.com/wizard/faq/vmsfaq_016.html The protocol definition for the old DIGITAL keyboard and mouse interfaces is buried at the back of the QDSS section in the old VAXstation II manual, specifically, in the back of the VCB02 Video Subsystem Technical Manual (EK-104AA-TM). The keyboard wiring and protocol is in appendix B, and occupies circa 44 pages. The mouse is in appendix C, circa 12 pages. ... in case anyone wants to tackle a protocol converter. -ethan

21 years, 8 months

DF32x4 questions; software needed

by c.morris＠townsqr.com

My "DF32x4" disk emulator is alive and talking to my 8/L and appears to be reading and writing blocks of data correctly. There are a few instructions that I did not implement (e.g. the "Maintenance" IOT's 6631-4 which the manual says are only used in "diagnostic programming". Also the DCEA instruction does not clear the extended address and EA registers - it would have taken quite a bit more logic to implement and there was no more room on the PC board; additionally the DEAL instruction would be used anyway, which combines the clear action with a load of these registers from the AC - so the clear would be superfluous. The DEAL and DEAC load/read register commands are, of course, implemented). Ethan Dicks has pointed out that I should look at the drivers in OS8 and TSS8 to see if this will be a compatibility problem (i.e. they may expect to be able to clear EMA and EA for some reason, rather than loading them from the AC). Can anyone tell me where to find the source code so I can verify this? Also, I would love to have a paper tape copy of 4K Disk System Builder to start a build of Disk Monitor from scratch (I already have a copy of a DF32 build thanks to David Gesswein). Anyone? thanks Charles

21 years, 8 months

Ebka Familiarizor 6502

by Hans.Franke＠mch20.sbs.de

Now for something strange: Who of you has ever heared about a Ebka Industries Familiarizor 6502 I have just seen this little beast at ePay: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=1247&item=3409229078 Now, doing a quick search, nothing did show up, except a very short mentioning in Hans Pufals list. Any other info around? Gruss H. -- VCF Europa 4.0 am 03./04. Mai 2003 in Muenchen http://www.vcfe.org/

21 years, 8 months

PDP-11/24 Available in Virginia

by timothy.p.radde＠lmco.com

Is this system still available? I am in Pennsylvania and might be interested.

21 years, 8 months

Ultrix Driver Question

by sridhar＠neurotica.com

Hi people. I assume that SDI disks show up as /dev/ra* on Ultrix? What do the SDI controllers show up as? Specifically, the XMI ones? Peace... Sridhar

21 years, 8 months

That pesky battery! (was: Re: semi-OT: Power Computing 100 power supply)

by mbates＠whoopis.com

Well okay then! I dug around in the pile of old Macs in the basement and found an identical 3.6v mb battery, which tested good...stuck that in there, plugged old PSU back in, and it boots! Hooray! Thanks for all the help, everyone! :) (Sorry Chris, guess I won't be getting parts to share with you now...good luck with your Power 100 repair project.) -- MB

21 years, 8 months

Origins of Hierarchical Filesystems

by root＠parse.com

Hi folks, writing a chapter on filesystems, and was wondering if anyone knows the origins of the hierarchical filesystem (and no, it wasn't MS-DOS 2.0 :-)) I know TOPS-10 and friends used it, so it's got to be at least that old. Any takers? I'm looking for a ballpark year and the name of the OS and company... Probably just reply to me only; I'll be happy to summarize for the group. Thanks! -RK -- Looking for Digital Equipment Corp. PDP-1 through PDP-15 minicomputers! Robert Krten, PARSE Software Devices +1 613 599 8316. Realtime Systems Architecture, Consulting and Training at www.parse.com

21 years, 8 months

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test-drb April 2003