test-drb February 2002

test-drb@ccmp.vtda.org

293 participants
1043 discussions

Anything special about converting VAX 11/780 to single phase?

by gunther＠aurora.regenstrief.org

Hi, just to be sure, I would simply put all three phases on the same single phase. Are there any problems with that? The VAX 6000 is much pickier, but the VAX 11 and everything having the simple power distribution box should be fine, right? thanks, -Gunther -- Gunther Schadow, M.D., Ph.D. gschadow(a)regenstrief.org Medical Information Scientist Regenstrief Institute for Health Care Adjunct Assistant Professor Indiana University School of Medicine tel:1(317)630-7960 http://aurora.regenstrief.org

21 years, 11 months

Almost on topic - Cassette I/O

by bfranchuk＠jetnet.ab.ca

I am building a FPGA ( Field programmable gate array ) computer in the style of the early computers that had a front panel and TTY for I/O. While I don't have have a front panel working the Hardware serial bootstrap does work on my prototype. Since I have a few LOGIC cells left in my FPGA to play with I was thinking adding a cassette interface. Does anybody know of schematics on the web that I can get ideas from. Ben Franchuk. -- Standard Disclaimer : 97% speculation 2% bad grammar 1% facts. "Pre-historic Cpu's" http://www.jetnet.ab.ca/users/bfranchuk Now with schematics.

22 years

Diablo 3200

by vcf＠siconic.com

On Mon, 14 May 2001, George Leo Rachor Jr. wrote: > Stay of execution on this Diablo 3200..... > > We have bought a bit of time as my wife has convinced them not to hack it > up until I get to see this critter. Cool! > Obviously we have no software for the machine and I'm assuming you don't > either. Actually, I do. I got the original OS disks as well as a bunch of floppies with various bits of accounting type software and useless data. > The computer recycler has agreed not to remove the original components > until it can be determined if the box is usuable in some rudimentry > function as is. (They were going to gut the original components and > replace the guts with something more modern). Silly. Were they planning to use the same CRT and keyboard? I don't know how. If all they wanted was a nice desk for a computer then maybe they should go to Office Depot? > Now the challenge is to find software that might boot the machine up. I can make copies for you. Mine supposedly boots. Here is a picture of mine. http://www.siconic.com/computers/Diablo%203200.jpg Sellam Ismail Vintage Computer Festival ------------------------------------------------------------------------------ International Man of Intrigue and Danger http://www.vintage.org

22 years

SCSI options for PDP 11/23

by tom＠sba.miami.edu

After my recent RX02 problems, I've decided I'd like to add a SCSI controller in my 11/23, and keep my programs on a hard disk. What Q-bus controllers will work with RT-11? What's the minimum version of RT-11 that I can get by with? Can I use any disk, or does it have to be something in particular? Thanks, Tom

22 years

Apple II 13-sector disks

by pete＠dunnington.u-net.com

On Feb 26, 8:50, Sellam Ismail wrote: > On Tue, 26 Feb 2002, Paul R. Santa-Maria wrote: > > > I have received a box of old Apple II disks including a bunch of 13-sector > > disks. It would be quicker if I could directly boot these disks instead > > of using BOOT13 or the Basics disk. Does anyone here still have the > > 13-sector boot PROMs for the Disk II controller card? These are small > > 256-byte PROMs; can anyone here burn them if I cannot find originals? > > I've been searching for years and I don't think I've ever even seen a > 13-sector disk controller. Just about everybody updated their old > 13-sector boot controller when the 16-sector version came out. > > I think I may actually have the 13-sector boot PROMs but where they are I > wouldn't know. > > Here's an idea: boot trace the BOOT13 disk and grab the code from it. > It's most likely just the old 13-sector disk controller PROM code. > Alternatively, if you have a copy of the original Apple disk/DOS manual > you'll find the 13-sector PROM code there. Take this code and burn it > into a PROM and swap it with the correct PROM on the 16-sector controller > and it should work. As Sellam implies, it's only the boot PROM (P5) you need to change, not the state machine PROM (P6). I have a card somewhere with BOTH sets, switch selectable, but I haven't seen it for a while. The oher way to use the 13-sector disks is to make converted copies with MUFFIN. -- Pete Peter Turnbull Network Manager University of York

22 years

Cut me some slack (was Re: Spectrum makes a comeback)

by acme_ent＠bellsouth.net

I find it outrageous that Amstrad is trying to cash in on the Spectrum name, after they dumped the product line years ago. Did anyone check the fine print where it says that each game "expires" after a period of time, and in order to keep playing you must pay again? Piss on that! Here's a cheaper solution (and a better selection): go to World of Spectrum at http://www.void.jump.org/ and download an emulator. They're available for a lot of platforms including Unix, Amiga, and Win CE. (Warajevo is my personal favorite for Win9x). You now have *free* access to over 10,000 programs, which you can also download from WOS. If you happen to have a *real* Speccy (or a TS2068 with emulator cart) and a Win9x peecee, you can then download Taper, which you can use to transfer the programs to a cassette, or directly into the input of your Spec/2068. Anyone up for a run at Enduro Racer, Rainbow Islands, or Chuckie Egg? ;>) Glen 0/0 From: Sellam Ismail <foo(a)siconic.com> > On Fri, 8 Feb 2002, Gareth Knight wrote: > > > The Sinclair Spectrum is being relaunched by Amstrad as part of their email > > phone. > > http://www.amstrad.com/ams121101/emp_games.html > > That's too cool. I must have one. > > Sellam Ismail Vintage Computer Festival

22 years, 1 month

What Computer is This and Who is This Guy?

by d_l_mcd＠hotmail.com

Here's a picture from 1966 of an IBM computer at the IBM computing center on Manhattan (New York City, New York USA). The text for the photo says that the computer is being used to make a payroll calculation. Visible are 4 big-fridge-sized reel-reel tape devices, the console with operator seated at it, and some other things in the background. What's the computer model? Does anybody know who this guy (operator) is/was? Just a neat photo. It's about a 150k jpg file at this url: http://www.sover.net/~danm/computer_room.jpg _________________________________________________________________ Get your FREE download of MSN Explorer at http://explorer.msn.com/intl.asp

22 years, 1 month

Atari PC3000

by KenzieM＠sympatico.ca

I saw one of these yesterday. It looks like a monitor with floppy drive in the bottom, at the back was a plug for the power and another labelled video. I could not see anyplace for a keyboard to be attached. Does anyone know anything about this machine? Collector of Vintage Computers (www.ncf.ca/~ba600)

22 years, 1 month

This is funny (ebay)

by fernande＠internet1.net

SCSI to serial cable :-) http://cgi.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=2004730888 Chad Fernandez Michigan, USA

22 years, 1 month

RX02 / DSD440 problem

by tom＠sba.miami.edu

I have a DSD440 dual RX02 unit, and the first drive abruptly quit. The disk access LED just flashes. When you first power it on, you can hear a slight clicking noise when it first starts spinning. It does spin though. Right after this noise, the LED starts flashing, and the drive won't function. Does anyone have any ideas on what might be wrong and what I can do about it? Also, from the ODT prompt on my 11/23, how do you get it to boot >from the other (DY1) RX02? Thanks, Tom

22 years, 1 month

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test-drb February 2002