Is there anyone out there that can BURN a 2708 EPROM for me.
My Data I/O System-19 W/UNIPAK is DAS Kaput. It will not burn me a good
prom. Not Sure why though. My Fault ????
I am trying to add some code to Dave Dunfields Monitor to find out why
the 2708 that Andrew burnt is malfunctioning on my N*.
I have tried to add several lines of code but the resulting Prom just
doesn't perform the way the Andrew Prom does.
I am using a SOL-20 System/Bus Probe that will Single Step the N* CPU so
I can then track the code and its execution.
I can see the results of the OUT 3 & 2 Instructions but not the IN 2.
I am going to add jumpers to the Probe to display "Data In" as well as
the existing "Data Out" and that might help.
I have at least 5 2708's and can mail one out then I can sent the Code
as an attachment.
ALSO is there anyone out there using Dave's Monitor Mapped at "0000"
that would be willing to test the 2708 that I have; that works somewhat;
that way I could determine if the Fault is in the N* or in the Code itself.
Since I can't burn a New Prom I am up the creek without a Paddle so to
speak.
TIA
Bob in Wisconsin
Well, I now have a 3B2/310 that will power up and talk to a serial terminal. I have two hard drives, but neither one works - one makes horrible squealing noises, the other only makes annoying squealing noises... I really need the Devtools floppy to boot and format hard drives, so I can install another disk. I did manage to track down a disk image of a diagnostic disk, containing FILLEDT, but I can't get it to run the program from disk, it hits a firmware error. This might be intended for some other 3B2. I also found the SCSI tools disk, which only formats SCSI hard drives. I need the Devtools floppy intended for the MFM drives. Does anyone have a disk image of this floppy, preferably in ImageDisk format?
Thanks!
-Ian
> Date: Tue, 28 Dec 2010 11:48:10 -0800
> From: "Holley, Michael" <michael_holley at mentor.com>
> Subject: RE: HP drives
> To: "General Discussion: On-Topic and Off-Topic Posts"
> <cctalk at classiccmp.org>
> Message-ID:
> <1775CC70CD47484EA68ACCD903F02CB302387DD7 at na3-mail.mgc.mentorg.com>
> Content-Type: text/plain; charset="us-ascii"
>
> The original Shugart SA400 minifloppy (August 1976) only allowed 35
> tracks. In early 1977 Wangco announced the Model 82 Micro Floppy that
> allowed 40 tracks with new media.
>
> Here is a photo of both disks.
>
http://commons.wikimedia.org/wiki/File:Verbatim_5.25_minidisk_tracks_1978.jp
g
>
> Michael Holley
FWIW, I've been told the reason the SA400 could not go beyond 35 tracks was
that it used the same slider as the 8-inch product that could run into the
spindle. The SA400L was a redesign that allowed the carriage to go further
in. If anyone cares, I can get details from some ex-Shugart Associates
friends.
Can anyone confirm that Wangco was the FIRST to go to 40 tracks? FWIW I'm
told by Shugart Alumni that it was Tandon.
Tom
> Message: 12
> Date: Tue, 28 Dec 2010 22:58:21 -0800 (PST)
> From: steven stengel <tosteve at yahoo.com>
> Subject:
> To: cctech at classiccmp.org
> Message-ID: <266132.43443.qm at web110601.mail.gq1.yahoo.com>
> Content-Type: text/plain; charset=us-ascii
>
> I rented-out a dozen of my old computers to some Hollywood people for use in a Motorola TV commercial, to possibly be shown during the Superbowl.
>
> Includes systems from the 70s and 80s, like Sol-20, TRS-80, Osborne 1, SX-64, etc.
>
> Keep an eye out for it!
Steven,
Did they happen to say what the theme of the commercial is? Perhaps the computers will serve as technology backdrops to the evolution of their phones?
Best,
David Greelish, Computer Historian
Classic Computing
The Home of Computer History Nostalgia
http://www.classiccomputing.com
Classic Computing Blog
Classic Computing Show video podcast
"Stan Veit's History of the Personal Computer" audiobook podcast
Retro Computing Roundtable podcast
Historical Computer Society
Classic Computing Expo 1.0 - planning for sometime late 2011!
I have probably asked this question before, but without the additional
information.
I am enhancing the code in a program that runs under RSTS/E (or at least the
RT-11 RTS under RSTS/E), RT-11, TSX-Plus and RTEM-11 (or at least
some sort of RT-11 emulation under RSX-11 which Johnny has described
to me before, but which I am not quite sure how to characterize).
Quite recently (just yesterday in fact), I attempted to use ODT* again under
RT-11. Ever since SD(X).SYS arrived in RT-11 with V05.04, ODT* has
no longer been very useful. However, I was rather surprised to find that
it not only works quite well, but in addition, does not freeze system jobs.
Being in an experimental mood, I also managed to copy ODT.SAV* over
to RSTS/E and found to my astonishment that it also works there very well,
I presume under the RT-11 RTS under RSTS/E.
My question is: How does a user debug a program under the RT-11 RTS
under RSTS/E? Is ODT* generally considered the only way? Up until now,
I did not even have an answer. And no one else seemed to know either.
There is one rather minor difficulty with using ODT* in that I do not
have the
source for the program that is being enhanced and I must work with just the
SAV file. If anyone is interested, I can let them know how I solve that
problem as well.
In addition, I still do not have any documentation for how RTEM-11 supports
RT-11 EMT requests? Can anyone help? Does anyone have access to
a running RTEM-11 that I can at least use to perform some tests?
Jerome Fine
* For those of you who know better, I am actually using the variation of
ODT called VDT which does everything that ODT does, but also runs
in a multi-terminal environment as well as under the normal single
terminal
monitors such as the distributed RT11XM.SYS monitors that DEC
produces for the binary RT-11 distributions. To my surprise, VDT also
runs under VBGEXE, although I actually tried that after running VDT.SAV
under the RT-11 RTS under RSTS/E. About the only advantage to using
VDT is that SDX.SYS freezes system jobs during a breakpoint while VDT
does NOT affect the operation of a system job, i.e. the system job keeps
right on running even when VDT is holding the background job at a
breakpoint. In my testing situation, this is a big advantage. Of
course, the
advantage of VDT under RSTS/E is that this seems to be the ONLY way
to have debug capability.
I can pick it up, or have it picked up and shipped. Cost is $25 at the
Surplus Exchange. You might be able to acquire it over the web, haven't
looked. I have asked some friends to see about getting it with an eye
to someone here wanting it.
Description is "system, printer, monitor and two 5 1/4 floppy drives"
Shipping would be extra.
Doug writes
> I thought the Paragon was a large rack mounted monster, like the
> IPSC/860. What I saw in the picture didn't look like anything I
> would call a 'SuperComputer'.
The item pictured in the URL of the original post, is a micro-based
computer+CRT+media drive diagnostic console. ISTR it's x86 based
(?386) and runs some commercial Unix of the era (not SCO...).
I may be confusing some of the Delta details with the Paragon.
Tim.
I sent this over to the rescue list as well - it's probably borderline OT here, but I figured it's worth a shot - so apologies if you get this twice.
I need to read some full size QIC tape cartridges that were written in an unknown format, but the tapes themselves are the ones intended for the 2 gig drives. I'm not sure if they're compressed, or what density they were actually written at, but since these things are at least somewhat backward compatible, the 4/8 gig drive should be able to read them too. Anyone have one of these drives they could part with? Note that theses are the full size (DC) QIC carts, not the smaller "floppy-tape" ones.
-Ian
I rented-out a dozen of my old computers to some Hollywood people for use in a Motorola TV commercial, to possibly be shown during the Superbowl.
Includes systems from the 70s and 80s, like Sol-20, TRS-80, Osborne 1, SX-64, etc.
Keep an eye out for it!
I rented-out a dozen of my old computers to some Hollywood people for use in a Motorola TV commercial, to possibly be shown during the Superbowl.
Includes systems from the 70s and 80s, like Sol-20, TRS-80, Osborne 1, SX-64, etc.
Keep an eye out for it!
