test-drb April 2008

test-drb@ccmp.vtda.org

196 participants
307 discussions

WTB ( and some questions ) WD1002-05 / HDO

by jos.mar＠bluewin.ch

I am in the market for a WD1002-05 or WD1002-HDO controller. Are these software compatible to the WD1002-27x ( of which I have 2 ) ? Does anyone have a software and/or schematics manual for the -27x ? I do realize the -27x is RLL, the others are MFM, but then I have a choice of disks to use. Or could the -27x be jumpered for MFM compatibility ? Target : - Obtain a harddisk with 100 sectors (@ 256 bytes/sect) per cylinder. 4 heads with 25 256-byte-sectors-per-tracks should do the trick. I do no care about lost space on the disk. Jos

16 years, 3 months

WTB: Emulex MT-02 controller

by aek＠bitsavers.org

> That was the MT-02 and QIC-36, not QIC-02 interface. They used the Sysgen (4000?) cards before switching to MT-02's.

16 years, 3 months

WTB: Emulex MT-02 controller

by cclist＠sydex.com

> Date: Wed, 23 Apr 2008 09:24:07 -0700 > From: Al Kossow > Archives seem to be better than Wangtek. Lots of Sun 150 meg ones > in peripheral boxes. Most of my DCxxx recovery lately has been done > with Archive 20150's. Usual problem with the rubber rollers. > Early Sun 2's used a QIC bridge board with an Archive drive. This > was early enough to have been SASI. May have been from Sysgen. The > early Sun FE ref manual shows the board, but I don't have my copy > anywhere handy. That was the MT-02 and QIC-36, not QIC-02 interface. > SMS 7300 and 7400 SCSI adapters supported QIC02 tape. That's a thought. My experience with the OMTI/SMS adapters have mixed results. Mostly, the command set they support does not include the IDENTIFY command, which leads to all sorts of problems if your software or SCSI controller locates peripherals in this manner. A Tandberg 4220 looks like a pretty good bet for a "read anything/write some" drive. Cheers, Chuck

16 years, 3 months

ISO Intel MDS hard disk controller docs

by aek＠bitsavers.org

Does anyone have the reference manual and schematics for the CDC Hawk controller board set for an Intel MDS2 ? I've turned up most of the other docs except for that.

16 years, 3 months

WTB: Emulex MT-02 controller

by aek＠bitsavers.org

> Ah, well. Time to look for a nice SCSI QIC drive. Personally, I > like Tandberg over Wangtek. Anyone have any other preferences? I assume this is for data recovery. Archives seem to be better than Wangtek. Lots of Sun 150 meg ones in peripheral boxes. Most of my DCxxx recovery lately has been done with Archive 20150's. Usual problem with the rubber rollers. Early Sun 2's used a QIC bridge board with an Archive drive. This was early enough to have been SASI. May have been from Sysgen. The early Sun FE ref manual shows the board, but I don't have my copy anywhere handy. SMS 7300 and 7400 SCSI adapters supported QIC02 tape.

16 years, 3 months

IBM DisplayWriter DOS

by cclist＠sydex.com

> Date: Tue, 22 Apr 2008 16:54:56 -0800 > From: Grant Stockly > I read that there was something sold to make the IBM DisplayWriter > DOS compatible? What would that take? There were versions of some DOS programs that would run on the DW, such as VEDIT come to mind. Unless my memory is faultly, one of the hurdles that you're likely to run into is that the system (including that daisy wheel) is EBCDIC- based, not ASCII. But I don't think it's impossible to get MS-DOS going on one; it wouldn't surprise me if someone actually did at some point. "PC compatible" MS-DOS is a whole 'nother matter, however. IIRC, IBM had a setup that would allow one to attach a PC to a DW and use the DW keyboard and display to run DOS applications on the PC. Cheers, Chuck

16 years, 3 months

WTB: Emulex MT-02 controller

by cclist＠sydex.com

Scratch the request for an Emulex MT-02. Looking at the Bitsavers tech ref for this board shows it to be a QIC-36 interface, not a QIC- 02. I should have checked before I posted, sorry. A great big "Doh!" Does anyone know of a QIC-02 to SCSI converter? I'm not finding anything. Thanks, Chuck

16 years, 3 months

cctalk Digest, Vol 56, Issue 26 Looking for a LM4250H 8 Pin DIP

by trebor72＠execpc.com

Message: 16 Date: Wed, 16 Apr 2008 18:08:06 -0400 From: "Andrew Lynch" <lynchaj at yahoo.com> Subject: RE: Looking for a LM4250H 8 Pin DIP or A real good substitute I am Looking for a LM4250H 8 Pin DIP or A real good substitute. I found a Data Sheet but having trouble locating any Parts. I am hoping someone has one in their Parts Box Bob, I bought some a while back from UnicornElectronics.com. They are really cheap parts and it fixed my home brew S-100 bus terminator with no problems. Apparently those op-amps get worn out over time and just die occasionally, I guess. At least replacing the one on mine worked. Thanks and good luck! Andrew Thanks I must have missed them; I just rechecked and they are listed on page 12 of my Catalog. I am adding a Terminator circuit to a Board I had made up for my BYTE-8 S-100 box Thanks Bob

16 years, 3 months

IBM DisplayWriter DOS

by warren＠databasics.us

Grant Stockley wrote: "I read that there was something sold to make the IBM DisplayWriter DOS compatible? What would that take?" IBM produced an IBM PC program called DisplayWrite (DW IV was the last version, IIRC.) This allowed document interchangability with other IBM platforms, including the DisplayWriter and 5520. It was NOT a method to make the DisplayWriter DOS compatible, however. It let the PC act like a DisplayWriter, and produced format compatible documents. Sadly, I think this must be what you read about. I suppose a retro-fit kit to make the DisplayWriter PC compatible, but I've not heard of it. If you find anything like this, let us know... Peace, Warren E. Wolfe, warren at databasics.us

16 years, 3 months

VAXstation 3100 and DecWindows

by RodSmallwood＠mail.ediconsulting.co.uk

Down to a product not being loaded (It also shows a missing product in the boot sequence) But it does not tell you which one!!! Rod -----Original Message----- From: cctech-bounces at classiccmp.org [mailto:cctech-bounces at classiccmp.org] On Behalf Of Dave McGuire Sent: 22 April 2008 15:59 To: General Discussion: On-Topic Posts Only Subject: Re: VAXstation 3100 and DecWindows On Apr 22, 2008, at 6:20 AM, Rod Smallwood wrote: > I'm past that hurdle. It seems you have to have a console connected > and define the display from there. > Its just a license problem now. I've been advised to load a couple > more appliaction and license them. That is great news! Let us know how things go after you've loaded the licenses. -Dave -- Dave McGuire Port Charlotte, FL

16 years, 3 months

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test-drb April 2008