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101090 discussions

Wanted: Graphics card and drive sled for RS/6000 7046-B50

by andreww591＠gmail.com

I recently bought an RS/6000 7046-B50. It didn't have a graphics card installed (I can use it over a serial console, but I would prefer to be able to use a graphical console). It is also missing the drive sleds. Does anybody have a graphics card or drive sled that would work with it?

16 years, 1 month

chemistry simulator on Apple ][?

by mcguire＠neurotica.com

A local friend is looking for an old chemistry simulator program for the Apple ][. Here's his description: > I'm trying to find a "chemistry simulator" program that I used to play > with on an Apple II way back in the day. I don't remember the name of > it, but I remember being able to build a decent "lab" out of parts and > pieces. I remember that the first lesson was an experiment to figure > out why the fertilizer ship in Texas City exploded after an onboard > fire. Does anyone know what this might've been called, or better yet, does anyone have a copy? -Dave -- Dave McGuire Port Charlotte, FL

16 years, 1 month

Taking offers on PDP-8 (straight-8)

by sellam＠vintagetech.com

A straight-8 has come up for sale. I am representing the seller. I have photos and details. If you're interested please e-mail me and I'll send over some information. Preliminary photos are here: http://siconic.com/computers/PDP-8/ We'll take opening offers and if there's one good enough then we'll cut to a straigt (8) sale. Otherwise, it'll move on to a VCF web auction at a future date. Thanks!! -- Sellam Ismail Vintage Computer Festival ------------------------------------------------------------------------------ International Man of Intrigue and Danger http://www.vintage.org [ Old computing resources for business || Buy/Sell/Trade Vintage Computers ] [ and academia at www.VintageTech.com || at http://marketplace.vintage.org ]

16 years, 1 month

HP 2671 Graphics ROM

by hp-fix＠xs4all.nl

I aquired a HP 2671A thermal printer and know that there should be an upgrade ROM to 'upgrade' it to a HP 2671G. Thanks to Tony excelent work on HPCC CDROM i have the schematics and was able to fix the head positioning circuit. One of the driver transistors (TIP 122) was bad after replacing it and cleaning the printer it works fine. But now I want to use it for printing graphics (diagrams) and would be very happy whith an image of the graphics ROM. -Rik PS. don't shoot me if it appears a second time, I used the first time the wrong email address.......:-(

16 years, 1 month

HP 2671 Graphics ROM

by nig.bailey＠virgin.net

I don't know where you are tony, but I have the right pod on my old stag to do 80/8749s I'm in luton.

16 years, 1 month

RGB-VGA Converter -- buy or build?

by stojoskij＠ikomline.net

Hi, I need scematics of RGB to VGA converter. I want to connect Wheel Balancer machine to computer VGA monitor. Old monitor is VALVO VCC93/00 fixed frequency (15KHz) and have R, G, B and common Sync signals. I would be grateful if you can help me! Best regards, Jovica

16 years, 1 month

Disc analyser news update

by jonas＠otter.se

On Sat, 20 Mar 2010 20:38:31 +0000 (GMT), ard at p850ug1.demon.co.uk (Tony Duell) wrote: > Subject: Re: Disc analyser news update > To: cctalk at classiccmp.org > Message-ID: <m1Nt5RK-000J3oC at p850ug1> > Content-Type: text/plain > ... > > Well, OK, please name one change in the last 20 years that has made > _my_ > life better. > > -tony > I don't know what your health is like, but should you get high blood pressure, or a hernia, I can assure you that the medicine/surgery you will get will be much better than what was available 20 years ago. Or even having some procedure done by a dentist. And personally, I find that modern mobile phones and new services available on the Internet (on-line banking, for example) have made *my* life a lot easier (and better). /Jonas

16 years, 1 month

HP equivalents lists -- warning!

by ard＠p850ug1.demon.co.uk

I am sure everyone here who fixes old HP stuff knows of the equivalents lists that were published in Bench Briefs (which are now on the web). Today I was looking at aboard from an HP tape drive. I was pretty sure the 40 pin chip with a Motorola logo and an HP 1820-xxxx number was some flavour of 6809, but I couldn't rememebr what speed of whether it was an -E version, so I grabbed the latest equivalent list. I wasn't listed... But I was sure I recognised the number, so I looked in my older list. It was there. A 68B09. I also found a device I was looking at the other day, and which I suspected was a microcontroller (and isn't in the latest list) is listed in the older one as a 68488 ()which is what I deduced it to be after spending several hours downloading data sheets from the web and trying to match up pinouts). Argh! So a warning : Devices are sometimes removed from this equivalents list. You need to check all of them to see if it's listed anywhere. -tony

16 years, 1 month

Help with running RT-11 SAV files under RSTS/E

by jhfinedp3k＠compsys.to

I have been interested, of late, in fixing some of the bugs in MACRO.SAV / CREF.SAV which the documentation shows also run under RSTS/E. In addition to fixing the bug so that the year outputs as 4 digits on the listing, I thought it would be interesting to run MACRO.SAV as a system job. This requires a mapped RT-11 monitor to use VBGEXE.SAV to load and initiate MACRO.SAV since it is obviously not an REL file. However, the goal is to still be compatible running under RSTS/E. My question is how to distinguish between a mapped RT-11 monitor and RSTS/E? Does anyone have sufficient information about the RSTS/E environment to be able to distinguish RT-11 from RSTS/E? TSX-PLUS is trivial since requesting the TSX-PLUS job number is not supported under RT-11, so that problem is solved. Jerome Fine

16 years, 1 month

Solid State Disk replacement for RD53, 54, RK05, RL02/02

by emu＠e-bbes.com

Rob Jarratt wrote: > There was a thread recently on the comp.sys.dec newsgroup which ended up > with the suggestion from David Riley that he would be prepared to build an > FPGA-based board with a QBUS interface on one side and an SD interface on Is there really still interest in it ? I put my design away few years ago, as I didn't see anybody interested enough to buy one. There is the seasonal talk of it for sure, but ... OTOH, they old ones show up on ebay frequently, and they are not that expensive. Remarks ? Cheers

16 years, 1 month

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