Date: Sun, 12 Dec 2010 15:08:12 -0800
From: "Chuck Guzis" <cclist at sydex.com>
Subject: Re: Service bureaus (Was: Tek 4051 firmware listing
After that, I learned to drop by keypunch to occasionally chat with
the ladies (it was comprised entirely of women), and occasionally
drop off some munchies and other things. They knew me and I knew
And I never had an issue with keypunch after that.
As a matter of fact my very first job was also in a service bureau and
that's where I also learned the importance of being able to charm the
ladies, a skill that's served me well (and gotten me into considerable
trouble) in subsequent years...
[I hope this is on-topic; I believe the machine is at least 20 years old]
I have a NEC Spinwriter 5525 printer that is available for the cost of
shipping (free if you pick it up). The printer is a wide carriage and
appears to have a RS232 serial interface. I do not know if the
printer works or not.
The machine is located in Langdon Alberta Canada (postal code is T0J
1X1) which is approximately 10 minutes east of Calgary.
The machine is rather heavy. I estimate 50 pounds or more. If there
is no interest, the machine is headed to the e-waste recycling.
I can send pictures upon request.
Contact by e mail:
i a m v i rt ihatespam u al @ @ @ g ma il . c om <-- remove
spaces and ihatespam
I just joined this mailing list today on the advice of more than one vintage
computing contact. I was wondering if anyone could tell me anything about
the Protec Microsystems PRO-83 Z80 Single-Board Computer. I have conducted
an exhaustive search of the Internet and found only two sites (one from a
surplus store and a picture of it from a museum). I would appreciate any
information available, especially information regarding the power supply and
peripheral devices. Thank you very much.
MSN Photos is the easiest way to share and print your photos:
Any Hp Mpe folks left out there
I have non working 3000/37s with possibly good drives and a 3000 micro GX
that works but has a bad drive. I have tried to boot the micro GX from the
3000-37 drives and get this far.
Cold Boot >
Performing a Coldstart
Following Volumes not found
List Volume tables ?
Seems to freeze after that. It does this on 2 different drives.
Is this even possible to do ???
Does anyone have a OS tape for one of these ??? and which manuals
cover the boot menu and/or startup.
I would like to get both going but the 3000-37's have dead mother boards.
Stan Sieler, are you still around. Seems like every search I do comes up with
your name and advice.
g-wright at att.net
I have a couple of HPIB cables available at $15 the pair, shipped.
1 HP10833A ~42"
1 HP92220R ~12"
The 92220R has a right-angle connector at one end and the usual
straight connector at the other. (I wonder if the 'R' indicates
a right hand connector?)
First come, first served.
This is a belated response to a post you made here:
happened upon it while doing a 'for fun' search on the net for anything
doing with good ol' Century Data, my employer when I was young. Couldn't
resist responding to the post, even if it was half a year late!
The exerciser that you have is/was for the Trident series of hard disk
drives (predecessor to the Marksman). I was the main (in fact, pretty much
the ONLY) technician at Century Data/Calcomp, for these exercisers back from
the late 1970's to the mid 1980's, when they were phased out. I retired in
Have fun! (BTW, where'd you find one of these dinosaurs??)
Every so often, a discussion of Tiny BASIC appears around here. I was curious about one of the very first versions of Tiny BASIC, the 8080 implementation done by Whipple and Arnold, as documented in the Vol. 1 No. 1 (Jan 1976) issue of Dr. Dobb's Journal (of Tiny BASIC Calisthenics and Orthodontia)
This issue contains an octal listing of a Tiny BASIC interpreter for the 8080, and I couldn't find this version available for download anywhere. So... I typed it in, and it works!
I documented my work, which is available at
(Note - this location is temporary - I need a home for this if anyone is interested)
Included are the text file for the octal listing, a binary which can be loaded into memory, an attempt to extract the IL from the binary, and some instructions on bringing up Tiny BASIC. I was able to run some simple programs with a Z80 simulator that I've been running, and it appears to work correctly.
I found the PDF of the listing in the ACM digital library:
Typing in octal listings is error-prone enough, and typing them in from bad PDF scans of bad photocopies is even trickier. I have corrected many errors, but I'm sure there are more. If any kind soul would be willing to proofread / correct the listing, it would be **GREATLY** appreciated.
I hope this is of interest to people. I'm very interested in other versions of Tiny BASIC out there, if someone has ever typed this listing before, etc. I'm familiar with Tom Pittman's work, but other resources would be greatly appreciated.
Don't pick lemons.
See all the new 2007 cars at Yahoo! Autos.
>> At 5 minutes the guest has still not had chance to say anything the
>> interviewer needs to get the guest to speak
After the long introduction, I almost don't speak at all! The interview isn't just for hard core computer history enthusiasts, but also for a mainstream audience.
> I got as far as when he started with "all I thought you ever did was fire Steve Jobs and ruin Apple"
> I don't care what you think of the guy, but that was just insulting.
It was a joke, and John laughed at it. I then made sure to say to both the audience and John that I was joking. If you had listened to the introduction then you would have heard where I made it clear that I was a fan of John Sculley's and etc. Also, that I thought he was getting a bad rap. These are exactly the two main misconceptions which the interview addresses.
David Greelish, Computer Historian
President, Atlanta Historical Computing Society
The Home of Computer History Nostalgia
Classic Computing Blog
Retro Computing Roundtable podcast
"Stan Veit's History of the Personal Computer" audiobook podcast
Classic Computing Show video podcast
----- Original Messsage:
Date: Fri, 30 Dec 2011 22:43:21 -0800
From: Josh Dersch <derschjo at mail.msu.edu>
Anyone have any recommendations for a reasonably featured 8080 or Z80
What I've got running at the moment is a mongrel IMSAI 8080 with a Z80,
48K of working memory and a serial port. My eventual goal is to get
CP/M running on it (I have a Cromemco 64FDC -- anyone know of either an
official CP/M for this or know of a BIOS that supports this controller
before I start writing my own?) but for the time being I thought it
would be fun to get a BASIC running on it.
Does your memory configuration support swapping out the RDOS boot/monitor
And what drive(s) do you have connected? As you probably know, the FDC
supports 5.25"DD as well as 8" and the 3.5 and 5.25" HD equivalents.
I haven't seen any standalone BASIC versions for the FDC; there are at least
two versions of BASIC for the Cromemco, but AFAIK they both require a
bootable CDOS disk. However, unless they use any of the extra calls in CDOS
I wouldn't be surprised if they worked just as well with CP/M.
In addition to Cromemco's CDOS CP/M equivalent AFAIK there were also at
least two official third-party CP/M implementations for the FDC and one or
two hacked BIOSes, but there may be compatibility issues among the three
different versions of the FDC.
Interesting though; I'll have to look around...