Hello,
I came across your name on a search for TI-980. Do you have any contacts
who can do repairs for the different boards inside the TI-980? If you do,
please pass it on as I've got a customer who needs repairs.
Would you happen to know someone who might have a unit for sale?
Thanks.
E. Henry Valdez
TECHNOLOGY MARKETING GROUP
Houston, Texas USA
(713) 666-6677
On Wed, 04 Jan 2006 23:15:48 -0600 (CST), you wrote:
>It sounds very much like he could have blown something on the controller the
>first time when he wired it wrong, and said it got "hot".
That was only referring to the transistor that drives the POK
signal. It survived. I had also found that the "upside-down and
backwards" hookup places two 75113 drivers in contention - but
they are not fried either.
>Either that or, I'd still blame the cable. I haven't known qbus cards to
>just go bad like that.
Unlikely given that all read tests pass and the system boots...
and the Write Data and Write Gate signals are making it to the
logic board in the RL02, by direct measurement.
I missed the fact that the error code returned by the toggle-in
program (102210) actually has WDE (15) as well as WGE (10) set. I
am not sure which came first (i.e. the write data error resulted
>from the Fault/head withdrawal after the write gate error, or vice
versa).
But the problem could also be on the drive's R/W board. There is
some logic there that can cause a WDE. I'm not sure what fault
happens if there is a bad steering diode or write current source.
More as I investigate... I may have to fix the faulty p/s on my
Tek 7403 so I can plug in the logic analyzer! That will tell me
for sure which line is first.
-Charles
I'm going through some cartons of "Someday Stuff" - things I've
accumulated with the intent of using or trying, but not right now.
I found a box of floppies I just barely remember buying, and then not
having a clue how to install. It's old SCO stuff:
UNIX System V/386 v3.2.0
N1-N3
UFA1-UFA2
B1-B8
X1-X10
Open Desktop v1.0
N1-N5 type 386GT
P1-P37
Open Desktop v1.1.0
N1-5 type 386GT
N1 type ku386
UF1-UF2
P1-P37
Disk P1 of the ODT v1.0 set is labeled bad, and I don't have they
activation keys for it, but the SysV/386 and ODT v1.1 look good, and
have serials and activation keys.
Of course, there are no docs at all other than the license code
sheets, so I don't know if these are complete, even. At least they're
all sequential sets. :)
Doc
I can see the problem :-)
The power controller is most of the time a part of a complete
printset of a machine. That is also the case with the PSUs.
Anyway, check out:
http://www.mainecoon.com/classiccmp/861%20controller/ (for 861)
http://www.mainecoon.com/classiccmp/PDP-11-44/ (has the 877)
hope that helps a little.
- Henk.
> -----Original Message-----
> From: cctalk-bounces at classiccmp.org
> [mailto:cctalk-bounces at classiccmp.org] On Behalf Of Richard
> Sent: donderdag 5 januari 2006 2:26
> To: General Discussion: On-Topic and Off-Topic Posts
> Subject: Re: DEC 874-A Power Conditioner
>
>
> In article <10601050053.ZM61 at mindy.dunnington.plus.com>,
> Pete Turnbull <pete at dunnington.plus.com> writes:
>
> > On my 861Bs there are 8 mains outlets on the left, 4 on the
> right, and
> > the ON/OFF/REMOTE switch is towards the right, with one unlabelled
> > power control socket to the left of it, and two more to the right.
>
> OK, I looked at it more carefully... its an 871, not an 861.
>
> It has 6 switched outlets and 2 3-conductor connectors
> labelled J1 and J2. J1 has something plugged into it that
> goes into the cabinet somewhere. Switching to "remote on",
> and then applying power everywhere and diddling the AUX
> ON/OFF switch did nothing. I'll have to trace where this
> cable from J1 goes in the cabinet to find out more.
>
> A couple people said that the docs on this were at
> bitsavers.org, but I couldn't find it. URL anyone?
> --
> "The Direct3D Graphics Pipeline"-- code samples, sample chapter, FAQ:
> <http://www.xmission.com/~legalize/book/>
> Pilgrimage: Utah's annual demoparty
> <http://pilgrimage.scene.org>
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Thank you for your cooperation.
There has been some recent reference to ST225 drives. That reminded me that I
had a shelf (which I need) full of drives I purchased from a maintaince
company as surplus spares. Most units were tested and sealed in static bags. Any
interest? Here is a partial list. Some are more than qty one.
Epson HMD 720
360K full height
Computer Memories 6426S
Connor CP334
Seagate 212
225
225N
251
4026
412
506
Miniscribe 2012
8425
CM4510
Olviletti D5126H
XM/5220/2
Shugart 712
Tandon TM252
TM262
Micropolis 1355 (non-tested, non-baged)
I hope that I read all the model numbers correctly through the static bags.
Thanks, Paul
Tony Duell wrote:
> I know I have some of the BASIC coding forms for the TRS-80 model 1
> around here somwehre. (...)
> I should have some coding forms for the HP9100 calculator around here
> too, and maybe some for the HP67.
The only ones I have are fairly specialized, they're for the Triumph-
Adler Factura 100 (German electronic computing typewriter for invoices,
accounting work and such). I got them from my Grandad who worked in
a business machine shop and used to write programs for them according
to the customer's specification, and I've already started a
half-hearted attempt to recreate them as Excel spreadsheets.
Yours sincerely,
--
Arno Kletzander
Stud. Hilfskraft Informatik Sammlung Erlangen
www.iser.uni-erlangen.de
Lust, ein paar Euro nebenbei zu verdienen? Ohne Kosten, ohne Risiko!
Satte Provisionen f?r GMX Partner: http://www.gmx.net/de/go/partner
All:
If I could prevail upon the Mac guru's kindness again, but I'm
looking for working copies of Microsoft BASIC for the Macintosh version 1.0.
This is the 68k version of MS-BASIC. It's a two-disk set and one disk is
flaky and one is definitely bad.
If someone has this and is willing to make a Stuffit archive for
me, I'd appreciate it. TIA!
Rich
Rich Cini
Collector of classic computers
Build Master for the Altair32 Emulation Project
Web site: <http://highgate.comm.sfu.ca/~rcini/classiccmp/>
http://highgate.comm.sfu.ca/~rcini/classiccmp/
/************************************************************/
Date: Wed, 04 Jan 2006 10:20:51 -0800
From: "Chuck Guzis" <cclist at sydex.com>
Subject: Re: Speaking of 6502s, was Re: 70's micros still available -
>>On 1/4/2006 at 8:10 AM M H Stein wrote:
>>Most languages were ported to the PET (although some were for the 6809
>>in the dual-processor SPET):
>But a 6809 is nothing like a 6502!
Of course not; I was just pointing out that any search of 6502 software etc.
for the PET will probably include 6809 stuff as well.
>If anything, a 6809 is an improved 16-bit version of a 6800.
No "if anything" about it; in the words of the 6809 designers (who had
also been involved in development of the 6800):
"We feel (the 6809) is the best machine so far made by human."
(From a 3-part series starting in Byte Jan '79, detailing the philosophy
and development of the 6809 - wonder if they're suggesting that there
were better machines, presumably made by non-humans? Aliens?
The proverbial infinite number of monkeys?)
>In a way, this goes toward the idea of the 6800 having the more useful
>architecture than the 6502.
Arrghh... do we always have to have these discussions about which CPU/
computer/OS/language etc. etc. is better/more useful than xyz?
More useful for what, when, for whom, at what cost, yadda, yadda...?
And how does software being written for a 16-bit 6809 (three years newer
than the 6502) say anything about the relative merits of the even older
6800? I suppose that software being written for the Pentium proves
that an 8080 was better than a Z80?
As a matter of interest, the 6502 was the successor to the 6501,
pin-compatible with the 6800 and not that much different.
The 6809 was substantially different from both of them...
m
On Jan 4 2006, 21:49, Gooijen, Henk wrote:
> I would like to use the vast knowledge of this community, as a brief
> search through the calssiccmp archive gave no answer ...
> I can't get RT11 booted anymore on my 11/34.
> Is the first word (000240) the first word of block 0 of the RT11
bootstrap?
Yes, AFAIR all standard DEC bootstraps have 240 as the first word of
the boot block. 240 is NOP. Somebody once told me why they're done
that way, but I can't remember; only that it seemed sensible at the
time. The only exceptions I know are the not-really-bootstraps on the
first block of non-bootable RSX disks, which contain a little bit of
code that prints something like "This is not a bootable disk" to the
console, and then halts.
It sounds a bit like your boot block has been wiped, and mostly
replaced with zeros. Can you load the first block off the disk
manually, preferably not into location 000000, and examine it? Should
be fairly easy with an RL11. Then try some other block and make sure
that's not all zeros, to ensure it's the disk content you're seeing,
not some problem with the controller.
--
Pete Peter Turnbull
Network Manager
University of York