test-drb April 2010

test-drb@ccmp.vtda.org

172 participants
242 discussions

N* lives - Morrow DJ/DMA controller support

by jack.rubin＠ameritech.net

>>> Next hurdle is getting the Morrow Disk Jockey 8" controller hooked >>> in. Some of the diskettes I received with the unit (none of which >>> boot) have Basic and ASM programs that look like they're intended as >>> support for the DJ controller. Without documentation, this is going >>> to take a bit of experimentation, I think. >>> >> Get docs as that will save a huge amount of time. They are likely on >> Bitsavers or other archives. > > I have the Morrow Design docs, but the software discussed is all for > CP/M. This box came with a bunch of BASIC and ASM programs that look > like they are intended to patch N*DOS for the 8" controller. Cannot > find anything out about them, though, thus the comment about trial and > error. > > Steve > > Memory says Morrow never bothered with NS*dos only CP/M but it tould be iteretesting to see otherwise. Allison ******************************************** The COMPUPRO.ZIP file at Retroarchive (that Allison referenced in her next msg) also includes some Morrow items. There is a formatdj.asm file for the DJ/DMA controller that includes a NorthStar option. At least it's a start. I didn't dig much deeper but there is definitely some more Morrow stuff there. Jack

14 years, 8 months

chips vs chad

by technobug＠comcast.net

A friend in Buffalo insists that they are called chips there... CRC

14 years, 8 months

DEC RPR02 on eBay

by thomas.gardner＠sbcglobal.net

Philipp wrote: ... And I got some RPR schematics from someone in the Netherlands last Sunday - thanks again :-) Would be cool if the schematics fit my RP02 and RP03 drives - at least a little bit. I'll keep the stuff anyway. Perhaps there is some interest to put that to Al? Regards, Philipp http://www.hachti.de ------------------------------ The RP03 is an ISS drive and there will be little commonality in its schematics with that of the RP02/RPR02. For example, the former servos on a glass scale while the latter detents on a rack. As I recall the 660-1 (RP02) was a relatively short run product since DEC switched to the RP03. The Memorex 3660 (the IBM compatible version) was a much longer lived product so it got the benefit of many design improvements that were never in the 660-1. When Memorex refurbished a 3660 into a 660-1(refurb) I bet it got the benefit of all those improvements so it is likely the schematics are similar but different in detail. There is a 660-1 Maintenance Manual at bitsavers, no schematics. But the maintenance manual has a list of all the signals in the back panel so if you have the schematics that should be very helpful. Signals may have been added or deleted but the signal names rarely changed as the design was improved. You ought to consider posting those RPR02 schematics at bitsavers. Tom

14 years, 8 months

Linctape reading?

by djg＠pdp8online.com

> It's probably a laughable idea but... Is it possible to read LINCtapes > with a TU56 and a TD8E > DECTape controller? I could imagine that it's possible due to the simple > design of the TD8E controller - most work is done in software... > Sort of. You will need to put an inverter in the timing track path (I put it in the cable). Discussion from when I originally worked on this. http://groups.google.com/group/alt.sys.pdp8/browse_thread/thread/64889d6346… I was able to read some tapes but on the todo list is to build a better reader since many of the tapes had too many errors. http://www.pdp8online.com/images/ I can dig up the code I wrote if your interested but it will need some work since it depended on the special interface board I made for the pdp-8 I have online. Much of the work I did on the PC. I can also give you the code the web site uses to display the tape contents.

14 years, 8 months

on and off topic magazines and journals to be gotten rid of

by starbase89＠gmail.com

I am trying to get rid of around 300 old magazines and journals for someone I know. Included are about 200 "Proceedings of the IRE/IEEE" journals varying in age from 1949 to 1970, as well as bound full-year journals from 1953, 1955, 1961, 1962 & 1963. Additionally, there are about 70 "R.F. Design" Ranging from the late 1970s to the early 1990s, as well as 25 "Hewlett Packard Journal" from the early 1990s. Because the person who has them does not want to give them away, I am trying to get $0.50 per 25 journals. They are located in Wall Township, New Jersey, and are for pickup only. Thanks Joe

14 years, 8 months

Anyone have an image of a Japanese PET chrgen ROM 901447-12?

by dm561＠torfree.net

----------------Original Message: Date: Mon, 5 Apr 2010 02:13:20 -0400 From: Ethan Dicks <ethan.dicks at gmail.com> Subject: Anyone have an image of a Japanese PET chrgen ROM 901447-12? Hi, All, This has all been discussed over on the cbm-hackers list over the past several months, but I've been fixing a couple of Static PET boards for someone in Japan. The only thing that appears to be unique to one of the boards is a 2316B in a Commodore-built 6540 adapter board (P/N 320076) and the 901447-12 ROM that's in it. There is no corresponding ROM image on Zimmers.net (where the old funet archive lives), and this ROM reads all zeros. I have a photo of the keyboard layout for a Japanese chicklet PET, and it doesn't happen to match the map of the Japanese C-64. One interesting feature is a few Kanji characters mixed in with the Katana, specifically, "4" maps to the Kanji for "year", "5" has "month", and "6" has "day" - obviously for rendering dates easily. There looks to be 51 Japanese glyphs total (all the Katakana characters, the three Kanji, and a couple of other characters needed to write sentences in Japanese). Given that the editor ROM is identical to a standard European/US BASIC 1.0 PET, it seems likely that the character drawn on the key would be the replacement in "upper/lower case mode" for that particular symbol. It seems likely I could reproduce the general contents of the ROM following the keyboard map, but it would be great it someone out there happened to have the real thing. I already know that nobody on the cbm-hackers list has come forward with a copy, but I'm pretty sure there are PET owners on this list who are not on cbm-hackers. If anyone happens to have this ROM or ROM image, please share it with the great repository at Zimmers.net. Thank you, -ethan --------------------------------Reply: ---------------------------------------------------------- It would certainly be nice to find the 'official' ROM, but I thought that the ROM that Philip (the owner of that PET on your bench) created was pretty well complete and correct; it seems to match my Japanese keyboard perfectly except for one character, and I suspect it's the key that's wrong and not the CG. Did you try that image and match it up to your Japanese chiclet keyboard? I've been playing with the idea of having all three (four?) character sets available on screen at the same time, using the reverse video signal. mike

14 years, 8 months

Wanted: Dead or Alive...

by alhartman＠yahoo.com

I can say that Corvus PCs did indeed exist. I used one, and sold lots of them while working for Lawrence S. Epstein Associates in the 1980's. There were other things Corvus that never got produced, this wasn't one of them. Al On Thu, 8 Apr 2010, Steven Hirsch wrote: > > On Thu, 8 Apr 2010, Curt @ Atari Museum wrote: > > > > > Let me know if anyone has one of these or has seen one, I'm told these may > > have been done by Tandon as they bought Corvus around 1987-1988 or so. > > Heh. You'll have to beat me to it... > > Seriously, though, are you sure this was ever actually manufactured? I > have a bunch of glossy sales stuff from the early 90s that shows a number > of Corvus items made of pure smoke and mirrors. > > Steve

14 years, 8 months

DEC RPR02 on eBay

by thomas.gardner＠sbcglobal.net

TLC - tender loving care The RP02 is a Memorex 660-1 OEM'ed to DEC who resold it as an RR02. The RPR02 is made from a Memorex 3660 originally rented into the IBM peripherals market, refurbished by Memorex into a Memorex 660-1 and then OEM'ed to DEC who resold it as an RPR02 - the second R for refurbished I'm probably going to bid for it. Tom ------------------------------ Message: 11 Date: Fri, 09 Apr 2010 20:56:48 +0200 From: Philipp Hachtmann <hachti at hachti.de> Subject: Re: DEC RPR02 on eBay To: General Discussion: On-Topic and Off-Topic Posts <cctalk at classiccmp.org> Hu! E. Groenenberg wrote: > Indeed it is rare. A bit of TLC and it would definitely be a nice > piece for any collection. Ed....! What is "TLC"? And what is the difference between RP02 and RPR02? They look quite similar - except the paint. And I got some RPR schematics from someone in the Netherlands last Sunday - thanks again :-) Would be cool if the schematics fit my RP02 and RP03 drives - at least a little bit. I'll keep the stuff anyway. Perhaps there is some interest to put that to Al? Regards, Philipp -- http://www.hachti.de

14 years, 8 months

CDC 9-Track SCSI Tape Drive FREE!

by tshoppa＠wmata.com

> http://www.merry-xmas.net/9track/ That is a CDC Keystone series drive. Can't really tell the model but I'd guess a 92181? The DEC TU80 is a very close cousin. It is natively "Formatted Pertec" interface, and I see the two 50 pin edge connectors for this on the back, but SCSI <-> Formatted Pertec converters do exist and there may be one bolted on the back somewhere. Tim.

14 years, 8 months

DEC RPR02 on eBay

by mcguire＠neurotica.com

DEC RPR02 drive on eBay...This one really IS "RARE L@@K" etc. Two days left as of the time of this writing, no bids, $100 opening bid, in New Hampshire. Item #200457840777. Beautiful device...wish I had a way to grab it. I hope someone here gives it a good home. (no association with seller, etc) -Dave -- Dave McGuire Port Charlotte, FL

14 years, 8 months

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test-drb April 2010