Hi
I'm new to this forum and I'm looking for info on contacting Bill Godbout.
I worked for him and Mike Quinn back in the early/mid 70s, testing ICs in
the back room of Quinn's.
Any help would be appreciated.
Thanks,
Bobbe
bobbeleh(a)earthlink.net
**********************************************************************
We do not see things as they are, we see them as we are.
**********************************************************************
> Even if you don't have any bugs to contribute, please comment
> if you think a central location is a good idea so that everyone
> who uses RT-11 can be aware of the current list of bugs.
FWIW, I think a central bug listing is a good idea.
Caveat on my opinion: I do not currently have any PDP-11s operational,
although I have several that could, conceivably, be put into working
condition on short order. I.e., I'm not currently running RT-11, although
it's on my List of Things to Do.
Roger Ivie
ivie(a)cc.usu.edu
I found a TI data book dated 1971 and it doesn't even mention 12xx ICs. It appears that by 1971 TI had switched entirely to the 54/74xx series. I have a couple of even older TI books if I can find them.
Joe
>
>Rick,
>
> SOMEWHERE I have an old TI IC catalog from around that time period. I'll try and find it and look them up.
>
> Joe
>
>At 06:44 AM 4/10/02 -0700, you wrote:
>>Hello,
>>
>>I've come across some old TI IC's that I'm hoping someone out there can
>>shed some light on.
>>
>>The date codes on the chips place them in late '67 to early '68.
>>The part numbers are:
>>
>>SN1286
>>SN1287
>>SN1288
>>
>>They are in 24-pin dual-inline plastic packages. The pin spacing 0.10
>>inch
>>between pins, and 0.50 inch between the rows of pins.
>>
>>These three chips are on a board that is populated with SSI DTL & early
>>TTL devices
>>in the SN15xxx and SN58xx DTL families, and SN74xx (only SN7474) TTL
>>devices.
>>All of the SSI stuff has date codes ranging from 6742 (week 42 '67) to
>>6804
>>(week 4 '68).
>>
>>Can anyone out there shed any light on these old devices?
>>
>>Yes...the board with these chips on them is from an old Singer/Friden
>>calculator.
>>
>>Thanks,
>>Rick Bensene
>>The Old Calculator Web Museum
>>http://www.geocities.com/oldcalculators
>>
>>
>>
Hi,
this weekend, we have been unsuccessful trying to get one of the ancient Unix
versions (V6 or V7) to run on a PDP-11/34. The plan is to have an ancient
PDP-11 on the VCFe in Munich running a proper version of Unix.
THe machine has two RK05 drives, RX01 floppy and a TS03 tape drive. Our first
problem is that we have been unable to find or make up a TS03 bootstrap.
We considered using RT-11 to transfer disk images to RK05 drives, but we could
not figure out how to get the image straight to the disk without having to
store it in an intermediate file and writing a RT-11 program to access the
disk sector-by-sector.
We have a lot of hardware at our disposal, so we took a Emulex TC12 Pertec
tape controller from a 11/44 (the 11/44 would also be nice as demonstration
CPU, but it has a SMD disk controller for which we have no drives). Not
having any documentation on the TC12 we just put it into the 11/34, but it did
not work (bus error LED lit).
So we're kind of stuck. Any ideas, hints or pointers (especially to a TC12
print set) would be greatly appreciated.
Thanks,
Hans
--
finger hans(a)huebner.org for details
> From: Sellam Ismail <foo(a)siconic.com>
> On Tue, 9 Apr 2002, Jonathan Engdahl wrote:
>
> > Haus des Lehrers. They did, after all, have Pong. Later, I did find the
> > http://www.blinkenlights.com/ website, and laughed at myself when I
found
> > what the other Simon was.
> >
> > I've already received two emails from people that want this classic
> > computing treasure, even in pieces.
>
> Are you talking about the 1950s Simon "electronic brain"?
>
> Some people are silly and lazy. If they would do the research, they
would
> find that the Simon was a construction project. So it's not like you're
> going to find a mass produced, commercially sold variant. You're only
> likely, if you're incredibly lucky, to find some hobbyists rats nest of
> wires and relays.
>
> Sellam Ismail Vintage Computer
Festival
Sellam, why do you insist on labeling people with terms such as "silly" and
"lazy?"
Have you considering taking the easy way and suggesting that they might be
mistaken?
Also, do you still want this Amstrad 3" drive or shall I repost it to the
list? It's been several months . . .
Glen
0/0
> -----Original Message-----
> From: William R. Buckley [mailto:hhacker@ev1.net]
> Over the past year, I have sent several messages to Tom Shoppa
> requesting a set of CD ROMs containing the offerings of his at
> the web site, metalab.unc.edu, yet to date I have not received
> the requested material. I have also sent email to Tom directly
> but, he has not answered. Is there some extenuating circumstance
> of which others on this list are more familiar than I?
FWIW, I've tried to contact Tim a couple times too, and not
gotten a response. I hope he's ok. :/
Chris
Christopher Smith, Perl Developer
Amdocs - Champaign, IL
/usr/bin/perl -e '
print((~"\x95\xc4\xe3"^"Just Another Perl Hacker.")."\x08!\n");
'
The point is, I can't see a real difference between a ROM chip
and a decoder + gates. Electronically they're much the same
thing. Physically, to change the program, I have to use a
soldering iron. It is _not_ clear to me why one is called firmware
and the other called hardware.
How about .. Hardware is the physical part(s) of a design that can be
seen, touched, crushed, thrown, weighed etc. Firmware is the idea
statically implemented in that hardware.
Lee.
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"Douglas H. Quebbeman" <dquebbeman(a)acm.org> wrote:
> I see lots of references to these drives...
>
> Do they possess multiple interfaces, or do you get
> one that has the interface you need?
You get one that has the interface you need, but I think you
can swap interfaces; e.g. I've swapped a single-ended SCSI
interface board into one that I got with a differential SCSI
interface. Note that the interface board is screwed to the
back plate which has the cutout for the connector, so if
you get a different interface board you may also want to get
the appropriate back plate for it.
> I've seen one with an HP-GPIB interface connector
> on the back, and was wondering if I pull that rear
> cover off, will I find a set of Pertect interface
> connectors hiding there? Or is that simply a different
> model?
I haven't looked inside one with a Pertec interface, but the SCSI
interfaces expect to plug into a flat cable that is in the base of the
drive and I expect the Pertec interface would too.
There's also a four-slot card cage in the right side of the drive,
accessible by removing a top cover. The boards installed in this cage
make a difference too. Later drives have only three cards installed
(the read/write/PLL boards and formatter board were replaced by a
single board).
7980A and 7980XC are HP-IB-interface drives sold into the HP
minicomputer markets. The XC suffix means the drive was sold with a
variant board that supports data compression (meaning you can write
tapes that are only readable by other 7980XCs).
7980S is the same drive with a SCSI (single-ended I think) interface,
sold into the HP minicomputer market. At one point HP offered a
field upgrade kit to change your HP-IB drive to a SCSI drive.
There is also a variant board that supports 800 BPI (in addition to
1600 and 6250). I believe that 800 BPI and XC compression are
mutually exclusive (you can't have one drive that does both).
7979A is an HP-IB-interface flavor of the drive that supports neither
6250 BPI nor data compression. I'm not sure but this may simply be a
different-variant board as well.
88780 are drives sold outside the HP minicomputer markets, including
OEMs like IBM, Sun, and Tandem. Of course the OEMs came up with their
own model numbers.
I have some notes that say data compression was option 400 and 800 BPI
was option 800, but I'm not sure whether this applied to a 7980 or
88780.
-Frank McConnell
Christopher Smith wrote:
>---------------------------------------------------
>> -----Original Message-----
>> From: Chuck Dickman
>
>> Why not loops of wirewrap wire? At 30AWG, they don't take much to
blow
>> and it would not be too hard to see. Plus 3/4 inch of wire is
>> cheap and
>> replaceable.
>
>It would be a lot more trouble to get the wire in and out. :)
Otherwise
>it's an interesting idea.
I was thinking more along the lines of no fuse housing at all. Just wire
between some form of binding pin.
>Chris
-chuck
> -----Original Message-----
> From: Ethan Dicks [mailto:erd_6502@yahoo.com]
> > Um -- dd?
> dd is great for moving around raw HD partitions (providing the source
> and dest are the same size), but I think you are looking for something
> like mkisofs. I've used it under Solaris.
That depends on what he meant by "make ISO images of cd roms."
I read that to mean "I want to make a raw copy of the disk, and
I'm just saying ISO out of habit." You obviously read it to mean
"I want to make an ISO image out of some files I've got so that
I can burn it onto a CD."
So which was it?
Chris
Christopher Smith, Perl Developer
Amdocs - Champaign, IL
/usr/bin/perl -e '
print((~"\x95\xc4\xe3"^"Just Another Perl Hacker.")."\x08!\n");
'
