I know that it is a "one-shot". What does that
mean? The pinouts in the Chip Directory are
no help. Several seem to be involved in the
DEPOSIT logic on the IMSAI front panel.
Also, I can't quite figure out what the logic
table for the 74107 is trying to say.
Thanks,
Bill
Hey folks. Anybody have any info on what software is required to run an HP
64110 processor emulator with various (z80, 68000, etc) emulation pods?
Anybody here ever use one?
-Dave McGuire
At 05:35 PM 7/11/99 -0700, Aaron wrote:
>Daisy is the company that bought Cadnetix and eventually went out of
>business. Did you pick it up? I'm not sure how close they are related, but
>I have a lot of documentation for the Cadnetix system I have (but haven't
>been able to get running). Mine is the same; 68020-based system running a
>variant of SunOS under the CAD software.
I *think* I saw a z-80 and a 68000 CPU in it. We didn't havve any tools
and couldn't get all the way into it.
>
>As far as the cables, could they be 50-pin scsi cables?
They might be but I *thought* they were larger. They are shielded so
maybe they just looked that way. They're LONG and seem to be made to go to
something outside of the cabinet.
Mine has an
>Adaptec scsi card and two enormous HD's in it (I think 10 meg apiece).
It has a large card mounted next to the hard drive. The card looks like
it converts SCSI to MFM for the hard drive and an interface for the 8"
floppy drive. There is a FH 5 1/4" hard drive in it that appears to have a
MFM interface. No idea what size drive it is.
I didn't get it but I can if someone wants it. I may be going back there
today or in the next couple of days so left me know ASAP.
Joe
>
> Aaron
>
>On Sun, 11 Jul 1999, Dave McGuire wrote:
>
>> On Wed, 31 Dec 1969, Joe wrote:
>> >This is another oddity that I spotted Friday. It's a black box about 3
>> >feet high by 1 x 2 feet with 2 chrome legs that stick out to one side with
>> >castors on the end of them. It has an 8" floppy drive near the top and
a FH
>> >5 1/4" hard drive inside. There were several WIDE ( 60 pin?) ribbon
cables
>> >hanging out of it. Inside at the bottom it has a card rack with about 6 or
>> >8 Multi-bus cards in it. The label on the outside says that it was made by
>> >Daisy. Any one have any idea what it is?
>>
>> Whoa...that's quite a find. I had a chance to play with one of those
about
>> ten years ago, very briefly. It's a very nice CAD system. I'm almost
positive
>> it's Sun-based, so if it's got multibus cards in it, there's a Sun-2 in
there.
>>
>> That was a kickin' system when I saw it. I was amazed by its
capabilities
>> and speed. My CAD work at the time was done using AutoCAD on a 10MHz 8088
>> (v20, actually) machine, and the Daisy system totally blew it away. I
know,
>> that's not saying much, but it was impressive at the time. :-)
>>
>> -Dave McGuire
>>
>
>
I just found a small box containing 6 8" DEC floppies labeled
RT-11 V5.2 BIN RX02
Part numbers BA-P727E-BC through BA-P732E-BC
The box (apparently) had not been opened, but the condition of the disks
is
unknown.
Anybody interested?
--
Eric Stechmann Direct: +1 (651) 234-1217
Software Critter Fax: +1 (651) 490-1484
American Biosystems, Inc. E-mail: estechmann(a)abivest.com
20 Yorkton Court URL: www.abivest.com
St.Paul MN 55117
The program said "Requires Windows 9* or better" so I bought a
Macintosh.
> Plotter", and the other "4662 Interactive Digital Plotter (with Option 31)
Hi, Marvin.
As Tony said, option 31 is not related to the 31 calculators. In fact it is the
multiple pen option for the 4662 - an 8-pen semicircular carousel.
How technical is this manual? I have some manuals, somewhere, I think, but I
need to know the part number for the little gear that bolts onto the motor
spindle in the option 31. (This drives a toothed belt which in turn drives the
carousel).
This gear on mine is in three pieces (metal hub + two parts of plastic gear). I
tried glueing back together, but the thing dropped a tooth on the belt just
often enough to be annoying. I suppose I can try again, reassembling the gear
more carefully, and tensioning the belt more accurately, but I'd like a new gear
anyway...
Philip.
EMM SEMI made a number of odd-shaped (as compared with more conventional
configurations of the time) staticc memories back in the late '70's -early
'80's. These don't particularly ring a bell, though the 256x8 seems to
sound about right. I haven't seen any literature lately. perhaps someone
with a recent IC master will have more.
Dick
-----Original Message-----
From: Doug Coward <mranalog(a)home.com>
To: Discussion re-collecting of classic computers
<classiccmp(a)u.washington.edu>
Date: Monday, July 12, 1999 12:41 AM
Subject: Can anyone ID these SEMI chips?
>Hi everyone,
> I'm curious about identifing some chips.
>I have was appears to be a memory board made by "EMM".
>It also appears to be Q-bus, at least the power and
>ground seem to be in the right places to be Q-bus.
>Anyway, the board has 64 of these chips, and looking
>at the interconnection between chips, they appear to
>be arranged in 2 groups of 32. The chips are labeled:
>
> SEMI
> 4200ACC
> 7733
>
> These are 22 pin chips, made in 1977, but I can't
>seem to find any chip manufacturer named SEMI or
>any reference to this 4200 number.
>
> Can anyone identify these chip?
>
>Thanks in advance,
>--Doug
>====================================================
>Doug Coward dcoward(a)pressstart.com (work)
>Sr. Software Eng. mranalog(a)home.com (home)
>Press Start Inc. http://www.pressstart.com
>Sunnyvale,CA
>
>Curator
>Analog Computer Museum and History Center
>http://www.best.com/~dcoward/analog
>====================================================
Cameron,
I can send you the Source Code for MicroBasic (An integer basic) written for
the 6800 in 1975.
The assembler memnomics are basicly the same, it shouldn't be too big a
stretch to convert to the 6502
(Which I always intended to do 24 years ago when I wrote it)
Robert Uiterwyk
uiterwyk (at) eisers (dot) com
>> That would be cool (though a commented disassembly would be even better,
>> if that's available from anyone). I'm really particularly interested in
>> *any* small BASIC implementation on the 6502 (Commodore BASIC doesn't
>> count -- *you* try wading through 16K of uncommented disassembly ;-).
>
> Appendix F of "PET/CBM Personal Computer Guide" by Adam Osborne/Carroll S
> Donahue consists of about 40 pages of lists of entry points and
> addresses/labels for routines in the BASIC ROMs. It's not a disassembly,
> but it would be great help to anyone trying to interpret one.
IMHO the best guide to PET internals is "Programming the PET/CBM" by Raeto West.
Pages and pages of guide to the ROMs (though no commented disassembly, I'm
afraid), comparing different versions, and explaining the bugs in early
versions.
ISTR the PET has 14K (on early PETS, 7 * 2K byte chips) of ROM (except for 4000
series and later) of which roughly 8K is BASIC and 6K is Kernal. In PETs with 4
* 4K chips, the remaining 2K is permanently paged out to make room for I/O
stuff.
And not all that 8K is machine code - you've got tables of reserved words and
addresses and things too.
Philip.
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This weekend, I scored a couple of boards in the Qbus space...
o another Qbus music board (93/D8036) (Anyone happen to have
any programming info on these?)
o a *dual-high* 1 Mbyte memory board (M7506-BC, MSV11-MB)
o an MXV11-B (M7195)
o a DLV11-E
o a DLV11-F
*and*
o An ABLE corp QNIverter
This last one is really interesting as I got to thinking about
whether there was a disk (either from DEC or some third party)
which ran on Qbus and looked like something supported by a
KS10...?
I think RM03s are supported by the KS10, and I *think* I have
an RM03-look-similar somewhere in my apartment (warehouse).
If this is true (and if I can find the controller), I might just
be able to get a less-power-hungry -10 system going in the
near future.
Can anyone help with information of what is available?
Megan Gentry
Former RT-11 Developer
+--------------------------------+-------------------------------------+
| Megan Gentry, EMT/B, PP-ASEL | Internet (work): gentry!zk3.dec.com |
| Unix Support Engineering Group | (home): mbg!world.std.com |
| Compaq Computer Corporation | addresses need '@' in place of '!' |
| 110 Spitbrook Rd. ZK03-2/T43 | URL: http://world.std.com/~mbg/ |
| Nashua, NH 03062 | "pdp-11 programmer - some assembler |
| (603) 884 1055 | required." - mbg |
+--------------------------------+-------------------------------------+
>The Qniverter won't help you with this. The RH11 in your KS10 uses
>the Unibus in an 18-bit wide mode (see the Unibus handbook for details
>on how the parity bits are chosen to do this), but there are no
>corresponding signals on the Q-bus. The Qniverter therefore generates
>two parity bits based on the Q-bus 16-bit-wide data bus and subs these in
>on the Unibus side.
I was wondering if this would be a problem on my drive back from
the place I got it... Okay, my fears were correct... d**n...
>No 3rd-party Unibus RH11-emulating controller that I ever met does
>18-bit-wide data, either.
Double D**n...
>If you're really serious about using your KS10, there are several
>companies (SETASI, in particular) with off-the-shelf Massbus replacement
>drive systems. Other companies (like Wilson Labs) make SCSI-to-Massbus
>converters. These, IMHO, are the solutions you should be looking at if
I'm serious, but my finances would not allow that (I'm sure it *is* a
case of "If you have to ask, you can't afford it").
>you've decided that you don't want RM's and RP's in your computer room
>I know several folks running KS10's at home, in one case *two* KS10's
>with 4 big Massbus disks and two TU77's. I *did* warn you that you
Would I know these people ? :-)
>wanted 3-phase power run in before you got your KS10, didn't I ? :-)
Yes, you did... But if I had waited for it to be run in before I
took it, I would have lost out on the chance of getting it. And they
are getting scarce, especially ones in the condition this was...
Megan Gentry
Former RT-11 Developer
+--------------------------------+-------------------------------------+
| Megan Gentry, EMT/B, PP-ASEL | Internet (work): gentry!zk3.dec.com |
| Unix Support Engineering Group | (home): mbg!world.std.com |
| Compaq Computer Corporation | addresses need '@' in place of '!' |
| 110 Spitbrook Rd. ZK03-2/T43 | URL: http://world.std.com/~mbg/ |
| Nashua, NH 03062 | "pdp-11 programmer - some assembler |
| (603) 884 1055 | required." - mbg |
+--------------------------------+-------------------------------------+
In a message dated 7/11/99 6:55:23 AM Eastern Daylight Time,
gareth.knight2@whichnet writes:
> Does anyone have any copies of the old UK magazines, Vic User or Commodore
> User (pre-1985)?
No, but there are some great scans of "Your Computer" at
http://w1.631.telia.com/~u63104436/
which include some Commodore related stuff, in case your interested.
Glen Goodwin
0/0
> o An ABLE corp QNIverter
>
>This last one is really interesting as I got to thinking about
>whether there was a disk (either from DEC or some third party)
>which ran on Qbus and looked like something supported by a
>KS10...?
>
>I think RM03s are supported by the KS10, and I *think* I have
>an RM03-look-similar somewhere in my apartment (warehouse).
>If this is true (and if I can find the controller), I might just
>be able to get a less-power-hungry -10 system going in the
>near future.
>
>Can anyone help with information of what is available?
The Qniverter won't help you with this. The RH11 in your KS10 uses
the Unibus in an 18-bit wide mode (see the Unibus handbook for details
on how the parity bits are chosen to do this), but there are no corresponding
signals on the Q-bus. The Qniverter therefore generates two parity
bits based on the Q-bus 16-bit-wide data bus and subs these in on the
Unibus side.
No 3rd-party Unibus RH11-emulating controller that I ever met does
18-bit-wide data, either.
If you're really serious about using your KS10, there are several
companies (SETASI, in particular) with off-the-shelf Massbus replacement
drive systems. Other companies (like Wilson Labs) make SCSI-to-Massbus
converters. These, IMHO, are the solutions you should be looking at if
you've decided that you don't want RM's and RP's in your computer room
I know several folks running KS10's at home, in one case *two* KS10's
with 4 big Massbus disks and two TU77's. I *did* warn you that you wanted
3-phase power run in before you got your KS10, didn't I ? :-)
--
Tim Shoppa Email: shoppa(a)trailing-edge.com
Trailing Edge Technology WWW: http://www.trailing-edge.com/
7328 Bradley Blvd Voice: 301-767-5917
Bethesda, MD, USA 20817 Fax: 301-767-5927
Hi,
I am in the process of making a freely available CD of all transputer
programs that are public domain/shareware/GPL. In order to benefit
everyone, I am asking you to donate any programs (no matter how small) as
soon as possible. I want to reach the 650meg mark by the end of this month.
So far I have 300-350megs. Tony, can you send me the schematics for the
B020 as a lot of people are asking me for this. I also have the B020
development kit which I'll send to you. Thanks.
Ram
< o another Qbus music board (93/D8036) (Anyone happen to have
< any programming info on these?)
I have a limited amount of Gigilo board info and software that drives it
for PDP-11, RT-11 using I think Micropower Pascal.
Allison
Hi,
On my scrounging trip Friday I found a big pile of LS ADM 5 terminals.
The appear to be in good condition. Does anyone need one? What's the
difference between the ADM 5 and the ADM 3A?
Joe
UK Classiccmpers: Hark!
--------------------------------------------------------------
From: "T.Bluck." <tb(a)planet-tharg.demon.co.uk>
Newsgroups: comp.sys.dec,alt.sys.pdp11
Subject: systems available.
Date: Sun, 11 Jul 1999 12:44:52 +0000
Hello.
I have two pdp11/34's (both with keypad/display front panels)
these systems have all the P.C.B.'s etc.. and also (I Think) tape
controller's as well..
and a pdp11/24 in a rack with a pair of RL02 drives and an
emulex sc12 card and smd drive (emulating rk06 and rk07 drives)
this system is running RSTS/E and will boot from any of the
attached drives.
I'm looking for offers and homes for these systems.
if interested please contact me by e-mail.
I'm in North Kent England, so be prepared to either collect, or
I'll hire a van and deliver..
All The Best.
--
Tim.Bluck.
-- end of forwarded message --
Ok, now we're cooking. I loaded up EDUSYSTEM 4K BASIC on my 8/E this
evening. The paper tape was part number DEC-08-ED10A-A-PB and it ran just
fine. When it starts it askes which functions to retain (sort of like Focal
does) and then gives you the READY prompt. My standard test of a FOR next
loop with a PRINT statement in the middle ran just fine. However, I've got
_no_ documentation on this version of BASIC.
So if anyone has docs for this version of BASIC please let me know, thanks!
--Chuck
A 74123 is a retriggerable one-shot. For a given trigger transition, it
outputs a pulse of very approximately calculable duration and, should it get
another such trigger before it's done with its current pulse, will continue
that pulse until the predtermined pulse duration after the last such
trigger.
If you work for many companies and use one in a circuit, you will be fired
without further ado. That was SOP at Martin Marietta when I was there. I
even saw a manager back a guy into a corner to get him to save everyone the
embarassment and just quit.
There is no justification for using such a device with today's circuitry,
and the passives which make it stabile and predictable for practical use all
cost more than an equivalent precisely timed circuit.
Now watch the guys jump on this one because they got one to work once upon a
time. . .
Dick
-----Original Message-----
From: Bill Sudbrink <bill(a)chipware.com>
To: Discussion re-collecting of classic computers
<classiccmp(a)u.washington.edu>
Date: Saturday, July 10, 1999 2:49 PM
Subject: 74123... What's it do?
>I know that it is a "one-shot". What does that
>mean? The pinouts in the Chip Directory are
>no help. Several seem to be involved in the
>DEPOSIT logic on the IMSAI front panel.
>Also, I can't quite figure out what the logic
>table for the 74107 is trying to say.
>
>Thanks,
>Bill
> Well, I need some help with a SCSI tape drive!!
>
>ENVIRONMENT:
>Hardware: CQD 220/TM set both ways for W3-6
> W2 is out, standard CSR
> for tape
> TZK12-AA with jumpers OOOOOCCOOC
>Software: RT-11 V5.6
>
>BUT, when I try to do a COPY DU0:a.b MU0:a.b
>the system hangs without having written anything to MU0:
>When I try to do a BACKUP DU0:a.b MU0:a.b
>I get 2 error messages saying it couldn't do the BACKUP
>and quits, again without writing anything to MU0:
It would be nice if every tape drive reacted the same way to SCSI
commands, but this simply isn't the case. If you can try a different
SCSI controller (or even a different firmware revision) or a different
make of tape drive you'll probably have better luck.
The fact that you can do some very simple operations, but not some
more complicated operations, points to the problem being with certain
SCSI "position tape" commands. This isn't too surprising if (as
I'm assuming) this is a QIC cartridge drive - these often balk at
filemark and record skips, *especially* in reverse (which is something
that RT-11 will try to do for PIP-type operations for sure.)
>Please, any suggestions would be helpful.
I wish I could give you better advice than "it's hit and miss", but
that advice would be "only use devices that the company that made your
SCSI host adapter is willing to support", and this is often excessively
restrictive. I think the CMD's are only qualified against Exabytes
and some 4mm cart drives (at least they were when I bought my new CQD-440
most of a decade ago.)
--
Tim Shoppa Email: shoppa(a)trailing-edge.com
Trailing Edge Technology WWW: http://www.trailing-edge.com/
7328 Bradley Blvd Voice: 301-767-5917
Bethesda, MD, USA 20817 Fax: 301-767-5927
Note that when I substitute a TQ50/TK50, everything
is OK with respect to PIP and BUP.
Sincerely yours,
Jerome Fine
Well, I need some help with a SCSI tape drive!!
ENVIRONMENT:
Hardware: CQD 220/TM set both ways for W3-6
W2 is out, standard CSR
for tape
TZK12-AA with jumpers OOOOOCCOOC
= Parity, SCSI ID =4, TPWR
(at least the SCSI ID seems to be 4
since that is what the CQD 220/TM
says to use for MU0: and MU0: exists)
DC 6250
Software: RT-11 V5.6
Symptoms:
I can do both an INIT MU0:
and a RUN BUP MU0:/Z
followed by: DIR MU0: for the simple INIT
BACKUP/DIR MU0: for the RUN BUP MU0:/Z
and for either DUMP/TERM MU0:
I get the correct stuff (which is somewhat different)
in each case, so I know I am writing to the tape drive
which stops and starts and rewinds, etc. the appropriate
number of times for these successful operations.
At first I had a SCSI hard drive on the 50 pin cable as
well (not at end of daisy chain - i.e. in the middle)
which made no difference to MU0: and the SCSI
hard drive works just fine at 160334 with or without
the tape drive powered on or off.
BUT, when I try to do a COPY DU0:a.b MU0:a.b
the system hangs without having written anything to MU0:
When I try to do a BACKUP DU0:a.b MU0:a.b
I get 2 error messages saying it couldn't do the BACKUP
and quits, again without writing anything to MU0:
Note that when I substitute a TQ50/TK50, everything
is OK with respect to PIP and BUP.
Please, any suggestions would be helpful.
Sincerely yours,
Jerome Fine
Hi,
Does anyone need a NeXt color InkJet printer? I picked one up with some
other stuff and I don't need it. I guess it's pretty rare, I've seen a
bunch of NeXt LASER printers but I've never a NeXt color inkjet before. I
haven't tested it yet but it appears to be in fine condition. It uses the
same large ink cartridges that the Apple Color printer and some of the
Canon inkjets use and it has a SCSI interface. I'm open for trades on HP
stuff, S-100 stuff or anything else that looks interesting.
Joe
<
<I cant see aany identifier on the front of the drive. Thee labels on =
<the tapes which belong to it say TK50K is this enough? If not do I need =
<to open the box to look at the drive or are there distinguishing =
<features on the front which will give you an idea what drive it is?
Ok,
3100, mounted inside, then it's a TZK30 (same density as tk50).
The standard TK50 is full height and does not have three lights.
Likely the tape mount failed for some reason and now you'll have to manually
remove the tape.
Allison
<If you work for many companies and use one in a circuit, you will be fired
<without further ado. That was SOP at Martin Marietta when I was there. I
<even saw a manager back a guy into a corner to get him to save everyone th
<embarassment and just quit.
I would have gone for nothing less that total public humiliation.
<There is no justification for using such a device with today's circuitry,
MITS and IMSAI lived... and died by them. Myself they are ok for
non-critical timing. Unfortunately they were often used in critical
circuits, shame as there were parts that could be used for critical
timing but 7412X was not it!!
Allison
Hi Tony,
>....The only firmware on the disk controller board is the GCR
>encoder/decoder ROM and the microcontroller for the spindle
>motors. Neither of those would change for DS drives. And I'm
>not suprised that the boot ROM will boot a DS drive either.
Quite, IIRC when you're using DS drives the system treats each side of the disc
as a separate drive. So in a dual floppy machine you'd have drives A through D
(A/C and B/D) - under DOS anyway.
TTFN - Pete.
--
Hardware & Software Engineer. Sound Engineer.
Collector of Arcade Machines, Games Consoles & Obsolete Computers (esp DEC)
peter.pachla(a)virgin.net |
peter.pachla(a)vectrex.freeserve.co.uk |
peter.pachla(a)wintermute.free-online.co.uk | www.wintermute.free-online.co.uk
--
Hi Tony,
>> Have you ever found software which will drive the Centronics port
>>as GPIB?....
>No. It wouldn't be too hard to write it, though...
>
>All I/O is memory mapped. The base addresses for the 3 VIAs seem
>to be....
Aha....you have detailed technical docs on the machine???
I managed to get a "service manual" several years ago but it has nothing even
remotely useful in it.... :-(
>What I was really looking for, though, was sound _input_ software. The
>hardware is almost there (you'd need a preamplifier, that's all).
Sorry, I'd misunderstood what you meant.
>Aren't they 80 track? They certainly seemed to be. Which of course means
>the heads are different to the PC drive ones....
Augh, major brain fade....you're correct of course, the Sirius uses 80 track
drives (I'd been fiddling with an XT before I wrote the message).
What I think I was getting at....is that pretty much any 80 track drive from
that era should work, as long as you can remove the analogue/motor control
boards (which isn't usually possible on more modern drives).
TTFN - Pete.
--
Hardware & Software Engineer. Sound Engineer.
Collector of Arcade Machines, Games Consoles & Obsolete Computers (esp DEC)
peter.pachla(a)virgin.net |
peter.pachla(a)vectrex.freeserve.co.uk |
peter.pachla(a)wintermute.free-online.co.uk | www.wintermute.free-online.co.uk
--
<I know that it is a "one-shot". What does that
<mean? The pinouts in the Chip Directory are
74121, 122, 123 and 9601
Response is a pulse triggered by the inputs and the pulse length is
determined by the R*C values connected.
Common use is pulse shortening or pulse stretching.
<no help. Several seem to be involved in the
<DEPOSIT logic on the IMSAI front panel.
<Also, I can't quite figure out what the logic
<table for the 74107 is trying to say.
74107, JK-FF. J and K inputs setup what the FF will do when the Clock
input changes state (hin to low transistion).
Allison
At 07:35 PM 3/19/99 -0700, you wrote:
>
>Can anyone recommend a vendor for obsolete or discontinued chips? My
>specific current need is for an AMD chip: AM7992BCD (or equivalent).
>
www.alltronics.com in San Jose has a
AM7992ADC for $US 2.50. Don't know what the suffix means: package, speed, etc.
There is an expensive place that may even make some "obsolete" chips, I
think their name is Rochester Electronics.
-Dave
>I know that it is a "one-shot". What does that
>mean?
An external resistor and capacitor set a time constant. One-shots
produce output pulses, the width set by the time constant, in response
to certain changes in their inputs.
> The pinouts in the Chip Directory are
>no help.
"Well duh". Try a manufacturer's website, i.e. National Semiconductor's
Application Note #366, "Designer's Encyclopedia of One Shots", at
http://www.national.com/an/AN/AN-366.pdf
or Fairchild Semiconductor for the 74123 data sheet
http://www.fairchildsemi.com/pf/DM/DM74123.html
If you have a nearby university, you'll be able to find the 74123 in
just about any TTL databook from the last 25 years or so. While you're
there, you might find a copy of Horowitz and Hill's _The Art of Electronics_.
Note that the 74LS123 is incompatible, for many applications, with the
non-LS 74123. This is the boundary between analog and digital technology...
--
Tim Shoppa Email: shoppa(a)trailing-edge.com
Trailing Edge Technology WWW: http://www.trailing-edge.com/
7328 Bradley Blvd Voice: 301-767-5917
Bethesda, MD, USA 20817 Fax: 301-767-5927
<me suspect there is some sort of special DEC CD-ROM holder cartridge. If
<so, is there any source for these? (I've got Sun ones but have never seen
<any others besides them.)
I think older sony used the same or was it panasonic.
Allison
I hope this is near enough on topic.
I started to create a standalone backup this morning aand have a problem. The backup process aborted because of a problem with the tape drive. The drive is now sitting there with all three lights flashing. If I press the 'unload' button all of the lights come on stadily for some time and then start flashing again.
Any suggestions as to what might be wrong, or at least how to diagnose the problem?
BTW I aam running VMS 5.2.
Regards
Pete
> I just got and RRD40 (external SCSI version that I'm going to "downgrade"
> to use with the KRQ50) and it has a very strange loading slot. This makes
> me suspect there is some sort of special DEC CD-ROM holder cartridge. If
> so, is there any source for these? (I've got Sun ones but have never seen
> any others besides them.)
Yep, I've got a few of the LMS caddies that fit the RRD40 left. Get me
your mailing address and one will go out ASAP.
Are you sure you really want to use the RRD40? It's slower than a 1X
CD-ROM... If you can at all get a more recent SCSI CD-ROM that you can
set to 512 bytes per sector (lots of such NEC units show up on E-bay
and at surplus dealers like www.hitechcafe.com) and use, do it. Most
third-party Q-bus SCSI controllers will issue SCSI mode selects so that
you can use drives that are set up for 2048 bytes per sector, even.
--
Tim Shoppa Email: shoppa(a)trailing-edge.com
Trailing Edge Technology WWW: http://www.trailing-edge.com/
7328 Bradley Blvd Voice: 301-767-5917
Bethesda, MD, USA 20817 Fax: 301-767-5927
<I started to create a standalone backup this morning aand have a =
<problem. The backup process aborted because of a problem with the tape =
<drive. The drive is now sitting there with all three lights flashing. =
<If I press the 'unload' button all of the lights come on stadily for =
<some time and then start flashing again. =20
<
<Any suggestions as to what might be wrong, or at least how to diagnose =
<the problem?
We would need to know more like what tape?
Allison
One last go at this.. (3rd time = charm??)
If anyone reading The List is familiar with RSTS/E V9.x (I am
running 9.7) I have a small perplexity.
I have performed a recent sysgen to add RL02, RK05, RX02, and
networking functionality to RSTS on my 11/44.
I have a pair of RL02s and an RL11 card installed in the machine.
The RL02 subsystem appears to function normally according to the
appropriate docs.
I can init the RL02s, I can erase and re-init, and during the
init process, if called for, the disk check patterns run to
completion and bad blocks (if any) are found and written to BADB.SYS.
I can mount the drives, and can see them mounted by SHOW DEV.
What I *can't* do is read or write to them... the error message
'device not available' results from trying to alloc, dir, or any
copy or pip operation.
I have tried mounting the /PUBLIC to no avail.
I have the RSTS Orange Wall coming, but it's not here yet... I'm
hoping I'm doing/not doing something dumb or obvious...
Thanks and cheers
John
Howdy,
I just got and RRD40 (external SCSI version that I'm going to "downgrade"
to use with the KRQ50) and it has a very strange loading slot. This makes
me suspect there is some sort of special DEC CD-ROM holder cartridge. If
so, is there any source for these? (I've got Sun ones but have never seen
any others besides them.)
--Chuck
I imaginge thta this is fairly off topic but I sincerely have no idea how
old it is.
A while ago I aquired a MaxSpeed VGA MaxStation X terminal. Nothing with
it, so I emailed MaxSpeed and they sent me a free PSU. I hooked up an SVGA
monitor, mouse, and keyboard, and plugged in my ethernet cable. When I
turn it on, the power light just blinks (short, long, short, long, etc)
over and over again. Nothing happens on the CRT, but the keyboard lights
blink momentarily.
Any ideas?
Thanks,
Kevin
-------------------------------------------------------------------------------
"It's you isn't it? THE BASTARD OPERATOR FROM HELL!"
"In the flesh, on the phone and in your account..."
-- BOFH #3
On Jul 9, 14:37, Cameron Kaiser wrote:
> That would be cool (though a commented disassembly would be even better,
> if that's available from anyone). I'm really particularly interested in
> *any* small BASIC implementation on the 6502 (Commodore BASIC doesn't
> count -- *you* try wading through 16K of uncommented disassembly ;-).
Appendix F of "PET/CBM Personal Computer Guide" by Adam Osborne/Carroll S
Donahue consists of about 40 pages of lists of entry points and
addresses/labels for routines in the BASIC ROMs. It's not a disassembly,
but it would be great help to anyone trying to interpret one.
--
Pete Peter Turnbull
Dept. of Computer Science
University of York
Hi Group:
Time for mid-summer cleaning. My logjam is getting far too big, and I need
to get rid of a bunch of stuff.
I am located in Vancouver, BC. Most of this stuff is large and/or heavy,
and therefore I will insist on pickup, or at least reasonable delivery
distance, say, within a couple of hundred miles.
Some items/systems, such as the pdp-11/60, are at a friend's house, and your
only option in this case, is to pick up. I will not ship 600+ lbs of gear
anywhere!
Please contact me via email (mcquiggi(a)remove-spamblock.sfu.ca) if you're
interested. I need to clear some space in the basement!
Here's the list:
1. Motorola 6800 development system. EXORcisor system unit, EXORdisk,
non-working SOROC dumb terminal. All manuals, some development boards,
some wirewrap boards. Circa 1975, a neat machine for those into early-PC.
2. Terminal, Tektronix 4017A, 16 colors, keyboard with pre-mouse rocker
pointer. All docs, working. Late 1970s, early 80s vintage.
3. Sun 3/60 system unit, ~150 MB HD and tape. Mono Sony monitor, keyboard,
no mouse.
4. Two Gandalf LDS140 low speed point-to-point modems.
5. MicroVAX 3100 model 10, 100 MB HD.
6. Boxes and boxes of 5.25" DSDD floppies.
7. TK50 tape drives, several, working condition.
8. Two BA23 MicroVAX/LSI-11 cases, no machine, just the plastic shell that
the machine fits into.
9. (Off Topic) Amateur radio gear: Henry 2002 "Tempo" 2 KW 2-meter linear;
Heathkit SB201A 2 KW linear, 80-15 meters.
10. pdp-11/60 computer system, several terminals, printers, disk drives, many
disk packs, tape drive (9 track 6250 bpi), software, documentation. Was
working before being put into dry storage a couple of years ago. This is a
_large_ system, main cabinet about the size of 2 full-size refrigerators,
total lot probably 1000 lbs. You'll need a truck!
That's all for now, likely more to follow.
Kevin
Here's the first draft at a list of the Top 150 Collectible Microcomputers
(from the U.S.A.). I would have gone for Top 100 but there are just too
many great machines, and 200 is too many.
It's currently at 133 items. Some related models are combined as one, even
though they are rather different... other similar models are kept separate.
This is basically just because I personally feel they rate their own
separate listing, feel free to disagree.
Please add items! Items on the list should meet the following categories:
1) Collectible Microcomputer (yes, I know the H-11 is on here as an
"honorary" micro)
3) Sold in the USA
4) Available from a manufacturer (not just plans in a magazine)
The list:
Altos 586
Altos ACS 8000
APF MP1000
Apple I
Apple II
Apple II+
Apple II+ Bell & Howell "Black Apple"
Apple IIc / IIc Plus
Apple IIe / IIe Platinum
Apple IIgs / IIgs Woz Limited Edition
Apple III
Apple III+
Apple Lisa / Macintosh XL
Apple Macintosh 128
Apple Macintosh 512K Through SE
Apple Macintosh Portable
AT&T Unix PC / 3B2 / 7300
Atari 400
Atari 800
Atari XL Series
Atari 520ST / 1040ST
Atari Portfolio
Byte Computers Byt-8
California Computer Systems (CCS) S-100
Coleco ADAM
Commodore/MOS Technologies KIM-1
Commodore PET 2001-8
Commodore PET 4032 / 8032
Commodore SuperPET SP9000
Commodore VIC-20
Commodore 64 / 65
Commodore 128 / 128D
Commodore C16 / Plus 4
Commodore SX64
Commodore Amiga 1000
Commodore Amiga 500
Compaq Portable PC / Plus / II / III
CompuColor II
CompuPro S-100 / 8-16
Convergent Technologies WorkSlate
Corvus Concept
Cromemco C-10
Cromemco System One
Cromemco System Three
Cromemco Z Series
Data General One
DEC Rainbow 100
Digital Group Systems
Dynalogic Hyperion
Epson HX-20
Epson PX-8 Geneva
Epson QX-10 & QX-16
Exidy Sorcerer
Gimix
Franklin ACE 1000 / 1200
Hewlett-Packard HP85
Hewlett-Packard HP150
Heathkit H-8
Heathkit H-11
Heath-Zenith H88/H89
IBM 5100 Personal Computer
IBM 5140 PC Convertible
IBM 5150 Personal Computer
IBM 5160 PC-XT
IBM 5170 AT
IBM 5155 Portable PC
IBM PCjr
IBM PS/2 Model 80
IMSAI 8080
IMSAI PCS-80
IMSAI VDP-80
Ithaca Audio InterSystems DPS-1
Intertec SuperBrain
Kaypro II
Kaypro 4 / 10
Lobo PMC-80
Mattel Aquarius
Mindset PC
MITS Altair 680
MITS Altair 8800
MITS Altair 8800a
MITS Altair 8800b
MITS Altair 8800b Turnkey
Morrow Decision 1
Morrow Micro Decision
Morrow Pivot
NEC PC-6001A
NEC PC-8001A
NEC PC-8201A / PC-5000
North Star Advantage
North Star Horizon
Ohio Scientific Challenger C1P
Ohio Scientific Challenger C4P
Ohio Scientific Challenger C3D
Osborne 1
Osborne Executive
Osborne Vixen
Otrona Attache
Polymorphic Systems POLY-88
Processor Technology SOL
Quasar/Panasonic HK2600TE Hand Held Computer
Radio Shack TRS-80 Model 1
Radio Shack TRS-80 Color Computers 1-3
Radio Shack TRS-80 Model 2
Radio Shack TRS-80 Model 3/4
Radio Shack TRS-80 Model 4P
Radio Shack TRS-80 Model 12 / 16 / 6000
Radio Shack TRS-80 Model 100 / 102 / 200
Radio Shack TRS-80 Micro Color Computer MC-10
Radio Shack TRS-80 Pocket Computers
RCA COSMAC 1802 / ELF / Super ELF
Rockwell AIM-65
Sanyo MBC-1000
Seattle Computer Products 8086
Sharp Pocket Computers PC-1500 / PC-1500A
Sinclair ZX80
Sinclair ZX81 / Timex-Sinclair ZX1000
Smoke Signal Broadcasting Chieftain
Spectravideo SV-318 / SV-328
Sphere
SWTPC (SouthWest Technical Products) 6800
SWTPC (SouthWest Technical Products) 6809
Synertek SYM-1
Texas Instruments TI 99/4A
Timex-Sinclair 1500
Timex-Sinclair 2068
Tomy Tutor
Vector Graphic Vector-1
Vector Graphic Vector-4
VideoBrain
Vtech Laser 128
Xerox 820
Zenith Z-110 / Z-120
Hey Hans:
We're grossly off topic here and I don't want to upset any of the classiccmp
folks (again), but here's my reply:
In a message dated 7/8/99 5:09:02 AM Eastern Daylight Time,
Hans.Franke(a)mch20.sbs.de writes:
> > Not to doubt your word, but as owner of a small PC repair shop, my
> experience
> > (and records) would suggest that the following components have a higher
> > failure rate than power supplies or their fans. In order from highest
> > failure rate:
>
> > 1) modems -- extremely susceptible to spikes -- our most common repair
>
> Modemfailure due spikes ? Just out of couriosity - do you still
> have telegraph like overhead single wire telephone connections
> and no protective devices in your area ? (Thats just the only
> way I can imagine to become the modems into #1 failing devices)
I live in Central Florida. To be honest I don't know what protective devices
the local phone company has. We do have old fashioned telephone poles. :>)
I do know this:
---> Central Florida is the lightning capitol of the world -- we get more
than anywhere else. :>(
---> July is peak lightning season.
--> Every summer from June to August, for the last seven years, we have sold
a huge (for us) number of modems, usually installing them in PCs which
contain burned-out modems.
--> I checked our files, and we have replaced more bad modems than any other
PC component.
Perhaps my logic is faulty so help me out here -- what would you conclude,
given the above data? Any suggestions as to what else might be killing all
these modems?
Regards,
Glen Goodwin
0/0
Hello from the Bay Area! Thanks to Chuck McManis, I now
have another MicroVAX III board set which will be put to many
useful purposes the moment I get home.
I have also acquired, in my scrounging travels, a Dilog DQ686
board. It appears to be a QBus ESDI controller. Confirm? Deny?
Drool?
I've also acquired two new-in-the-box DEC KRQ50 controller
kits. This is the kit required to put an RRD40 or 50 CD-ROM on a
MicroVAX or MicroPDP-11. It consists of an M7552 controller, the
cabinet and cable kit, a bus grant card, the external cable for the
CD-ROM drive, and an installation guide.
I'm going to keep one, but I will be placing the second one up
for bid on Haggle's 'Antique Computers' section once I get back to
the northwest (Sunday/Monday).
I'll be picking up a Northstar Horizon system this morning, so I
gotta scoot. Catch up to you all later.
-=-=-=-=-=-=-=-=-=-
Bruce Lane, Owner and Head Honcho
Blue Feather Technologies (www.bluefeathertech.com)
kyrrin(a)bluefeathertech.com
"...There's always a bigger fish..."
Remember when I was bitching about the S-100 having half a dozen or more
signals, any four of which would do the job? That's only true if the FP,
the CPU, and the target memory or peripheral agree on which signals those
are. That's not always the case. Some cards seem to prefer you use one
pair of signals as the active strobes with others as qualifiers, while
others require the concurrence of all before anything happens. It may be
that the memory doesn't think it's being written, or that it doesn't believe
the data is being gated onto the bus.
You might find it illuminating to reach in with a scope probe and see how
long the write and the select strobes are at the destination, and compare
them with the source.
Dick
-----Original Message-----
From: Bill Sudbrink <bill(a)chipware.com>
To: Discussion re-collecting of classic computers
<classiccmp(a)u.washington.edu>
Date: Thursday, July 08, 1999 4:58 PM
Subject: RE: IMSAI (moving along...)
>> Do you have prints for the cpu and FP? they are a must as you can
>> literally follow the signal forward or backward to the problem.
>
>For the front panel I have drawings of the board/traces, both
>solder and component sides. For the MPU-A I have nothing.
>Interestingly, I have the MPU-B Theory of Operation and Users
>Guide.
>
>Thanks,
>Bill
I accidentally posted this to the BSD Port-VAX list, so apologies if you
have seen it before......
I picked up, on behalf of the school here, 3 Vax 6000 machines last Monday,
>from my favourite scrapyard. ($300 for the lot)
This in now on topic, they are 1989 build, I think.:^)
Having searched for and never found a SCSI controller (apart from $$$$ new
ones) that would work in one, I was very pleased to find in a 6000-420 from
this lot, not one but THREE! CMD CBI-1000 VAXBI SCSI Controllers, 2 x /MB
(Disk only) and 1 x /TM Disk and/or Tape. I can now contemplate building
up one machine with all it's disk drives in the cpu cabinet. And my 4mm DAT
tape can now be cluster served again. Haven't been able to do that since
the strange Emulex Tape controller in the HSC50 died. (Well, the interface
in the enclosure with the 2 x DAT drives anyway, the HSC card is still ok I
think.
It emulated the DAT devices as TA78's to the Vax, (if you can imagine a 4 Gb
TA78) The surviving HP 4mm DAT is currently living in a VS4000-90, where it
works ok, but I'm not able to share it to the cluster, for some reason.
This lot includes:- 6420 with 128Mb of RAM and it's SCSI stuff - an XMI bus
only,
(never seen one of them before) 6440 with a DSSI controller, CI and
Ethernet, 196Mb of RAM(!) and a very tired 6240 with 96mb.
The 6240 has been dropped from a great height at some point and is really
bent, twisted and beaten up, (front door torn off) though it would probably
still run.
The 6440 is somewhat dinged, bent and scratched, ("body rough" I guess you'd
call it) but otherwise ok. The 6420 is fine apart from a few minor dings
and scratches. I'm spare parting the 6240, and probably the 6440.
Next week I have to go and pick up a retired, complete, CI based cluster,
that only came off DEC Maintenance in September 98, 1 x 6410, 1 x 6240, 2 x
HSC70, 2 x TA79, 1 x Star Coupler and stack of RA9x and RA7x drives in an
SA6?? cabinet. Direct from the owners. So they will be in mint nick. No
coin, just come and get it.
This is gonna be a big trip,(130 miles each way BTW) as I am towing a
trailer
behind the ute. It struggled a bit with the 3 x 6000's but if I lay some
stuff flat to reduce the
wind drag it should be ok.
Consequently, the school's lone 6320 is getting a major upgrade. It's now
fat with 256mb of RAM courtesy of the beat up 6440, and is going to get it's
CPU's and one of the CMD SCSI controllers and XMI based CI & Ethernet as
well. Plus we will have one complete spare machine ready to plug in.
The HSC50 will now retire to a working display I intend to set up and be
replaced by the HSC70.
I haven't figured out exactly what bit's will go where, but I'm counting on
2 or 3 Multi-CPU machines when the dust settles.
Some of the excess then comes to my private collection, so I will wind up
with a
multi-cpu box of my own, a 6260 with 128Mb and a SCSI controller if it all
works out - I will probably just update my existing 6220 to that level,
(since I've
already converted it to single phase) and have plenty of spare parts ;^)
BTW, anyone know how some good startup SYSGEN values for a 6000 that had
64mb originally and now has 256Mb? It runs Multinet 3.2 Rev B, WASD Web
Server/Proxy Server, MX mail, IUPOP3, Madgoat FTP, & only 2 or 3 interactive
users - me and the developer of WASD mostly - we're his beta site.
(The day to day file serving for the school is done by a Novell box.)
I can't see why I can't get it to a point where there are essentially no
page faults, considering the workload and available memory. I have bumped
up some of the PQL_xxxxxxxx Sysgen variables, but am really out of my depth
here. I have managed to make the correct changes in SYSGEN to have VMS 6.0
recognise all the memory, however, for some odd reason it won't accept -1 as
a variable in PHYSICALPAGES which should make it use (according to the VMS
FAQ anyway) all the memory it finds. I set it to 524288 and SHOW MEM says
256Mb so I guess it's happy.
But if I try SET PHYSICALPAGES = -1 SYSGEN says SYNTAX ERROR.
AUTOGEN? Last time I tried that, it hosed up the system so bad it took an
hour to get everything working again No idea what went wrong but I'm in no
hurry to try it again. When I get a second system up, I'll see if I can find
out what happened.
I'm reading the VMS tuning instructions, but the signal to noise ratio is
still rather on the high side at my level of comprehension.
Greetings from Country South Australia.
Geoff Roberts
VK5KDR
Computer Systems Manager
Saint Mark's College
Port Pirie, South Australia.
Email: geoffrob(a)stmarks.pp.catholic.edu.au
netcafe(a)pirie.mtx.net.au
ICQ #: 1970476
<On the MPU-A:
<Pin 68 has no connection, right at the card edge.
<Pin 77 goes to an 8T97 pin 9 (an output pin).
<
<Now that I look at it this way, this is VERY WEIRD!
<Maybe very bad? Does this mean that the CPU can not
<write to this memory card? Does the front panel
<arbitrate pin 68 for the CPU?
Arbitrate is the wrong word. PWR/ is generated by the CPU as is
SOUT, those combine in the front pannel to make MWRITE. Mwrite
is used to deposit front pannel data in ram and the cpu data to
ram. Most memories use Mwrite to write data but some will
use PWR/ and SOUT instead (for non frontpannel systems).
I belive the ram you are using wants Mwrite.
So you need to see if there is activity on the mwrite line (68)
If it's there when you hit deposit then look at sout and PWR/
on the bus.
Do you have prints for the cpu and FP? they are a must as you can
literally follow the signal forward or backward to the problem.
Or if you have BURSKY, Hayden books THE S100 BUS HANDBOOK that
will do as it has the IMSAI prints in it.
Allison
<This is only true for overhead lines, and not when they are buried under
<the street, correct? Actually, some of the main lines are fiber-optic now,
<which shouldn't carry a surge.
True to a point but, at some time the fiber becomes copper and there is
the source of risk.
A hit to a local tree can charge the ground that the copper passes through
and deliver a common mode bash to whatever is connected to it. Common
mode is when both leads are at the same potential but manyto many volts
above "Ground". This is very common with lightening. Shielded cable
is no help as the shield (at over 10,000 AMPS) can carry a very big
potential above around as well!
Keep in mind surge protectors are for small surges, lightining is a
very big surge and I've seen it melt 000 guage copper like it was
warm butter. The hit that did that cooked my NS* the first time
was a direct one to a roof antenna. the ground for that antenna was
000 copper. The second time that happend it was in a different place
and it hit the pole a half mile down thre road were it went underground
and though power and phone came in from underground... damm, not again!
Allison
Hi gang,
I'm back again. I've taken alot of pictures lately.
http://users.leading.net/~dogas/homebrew.html
This is a beautiful *old* s100 homebrew system built around a Tinker
Toys Wunderbus. It has 2 8" drives, 2 Exatron stringy floppies, a (I think)
wire-wrapped (George Morrow ???) front panel board...
http://users.leading.net/~dogas/b4.html
This is my only minicomputer, a Basic/Four. Also there are pictures of
the terminal, inside the back, a few dual 8" systems, etc.... I'll go out
on a limb and ask if anyone has any software for this. :)
:)
- Mike: dogas(a)leading.net
Hi!
After getting that email from the guy that wanted the Osborne to turn in to
a 'portastudio', I got an idea.
I'm going to be going to college in a couple years, and doubt I'll have very
much space (especially in the car I have) to lug my full-size tower PC and
21" monitor back and forth every semester. I was also sorting through my
parts boxes, and found I still had a 9" VGA monitor (mono) that I thought
blew out, a 386 board, and a PS/2 Model 25 keyboard. What I'm thinking of
doing is getting an old 5155 case, and keyboard, putting in the VGA
tube/video guts, and replacing the keyboard with the Model 25 keyboard,
since it's smaller. I'd then take that computer to college, since I'd
basically be doing word processing (word Perfect), and a bit of web
browsing/email (Arachne).
I'm not looking to pay much for one (probably between $15-$20), and all I
need is the case and keyboard. If anyone has one with a blown monitor or
something, let me know.
ThAnX in avdance...
-Jason
( roblwill(a)usaor.net )
< http://members.tripod.com/general_1 >
ICQ # 1730318
