Hey all --
Due to a small miracle I now have 8KW of perfectly functioning core in my
long-ill Imlac PDS-1D. The last hurdle is devising a replacement for the
missing display (an X/Y vector display). For the time being I'm going to
attempt to use an oscilloscope, but first I need to build a cable.
The Imlac uses a Winchester connector (14 position) for the display and
while they're not as common these days the parts can still be found so I
thought I was in the clear, but what I failed to notice is that three of
the "pins" (for the X, Y and Blank signals) are actually tiny coaxial
connectors that fit within the Winchester housing (i.e. they're the same
diameter as a Winchester pin).
I haven't been able to track these connectors down anywhere. Anyone have
any ideas?
Failing that, I can always just tap into the backplane to pick up these
signals and ignore the connector on the bulkhead, but it would be nice to
be able to use the original connector...
- Josh
V7.2 of Ersatz-11 is done. New features include:
- Intel gigabit Ethernet driver (ASSIGN XH0: IGBE:).
- FTP server in DOS and stand-alone versions (FTPSERVER START /ACC=users.txt).
- Filename completion with TAB key.
- Stand-alone .ISO file is dual-bootable (copy to CD-R or flash drive).
- Inactivity timeout for Telnet connections.
- Linux full version has DCI1300 driver (for emulating DR11C/DRV11).
Bug fixes and tweaks as always.
As usual, the Demo version can be downloaded from:
http://www.dbit.com/demo.html
Updates have been mailed to commercial users with current subscriptions.
John Wilson
D Bit
Hi,
I have an Intel iUP-201 EPROM programmer which is giving a 'Power Supply Failure' error. I think it is failing a self check for one of the output voltages from one of its uA723 precision regulators, which are set from resistor networks and multi-turn pots.
I have checked all the electrolytic caps and they seem fine, and voltages from the linear power supply look reasonable. I have a user manual but no schematic or service manual, so am a bit in the dark as to where the problem is.
I found a range of similar manuals here:
http://www.intel-vintage.info/inteldevelopmenttools.htm
Please can anyone with further documents for the iUP-201 (or similar iUP-200) please get in touch,
Regards,
John
Intel Development Tools - Intel Vintage<http://www.intel-vintage.info/inteldevelopmenttools.htm>
www.intel-vintage.info
This Site about Intel old staffs like ICs ,Manuals,Tools
-------- Original message --------
From: allison <ajp166 at verizon.net>
Date: 2016-12-02 2:23 PM (GMT-08:00)
To: cctalk at classiccmp.org
Subject: Re: Thinking about acquiring PDP stuff
On 12/02/2016 12:33 PM, Brad H wrote:
> -----Original Message-----
> From: cctalk [mailto:cctalk-bounces at classiccmp.org] On Behalf Of Rich Alderson
> Sent: Thursday, December 1, 2016 1:34 PM
> To: 'General Discussion: On-Topic and Off-Topic Posts' <cctalk at classiccmp.org>
> Subject: RE: Thinking about acquiring PDP stuff
>
> From: Brad H
> Sent: Thursday, December 01, 2016 8:18 AM
>
>> My Intellec 230 though might give a PDP a run for its money.
> See, I'm trying to get you to stop saying "a PDP".? There's no such thing.
> There are families of PDP-n things, but there are wide differences in size, weight, and capabilities.
>
> Your Intellec 230 would fit inside one memory cabinet of a PDP-10 with room to spare.? The entire PDP-10 system weighs tons.
>
>???????????????????????????????????????????????????????????????? Rich
> Rich Alderson
> Sr. Systems Engineer
> Living Computers: Museum + Labs
> 2245 1st Ave S
>> Seattle, WA 98134
>>
>> http://www.LivingComputers.org/
> Sorry.. I was being lazy.. I should have said 'a PDP 8/E'.? Obviously there are some pretty large PDP-# systems.
>
That's more than lazy!? Just don't!
The PDP-8 and the PDP11 and PDP10 were beating the pants off of Intellec
2xx systems
for years before the first one was made.? Remember Billy Gates used a
PDP10 cross
assembler and simulator to create BASIC.? The market those DEC system
were in
demanded far more performance than the 8080 from 1974 could deliver.
An 8e running WPS was typically a multi-user system.
A PDP-8E running TSS could service 8-16 users in what appeared to them
as real time.
That was the original Boces Lirics system of 1969 a whopping three racks
of PDP-8i
The PDP-8e was a tad faster.? Fast forward to the early 90s and my
Decmate-III with APU
and running OS278 likely make the I230 look poor and it was much
smaller.? FYI the DMIII
is a PDP-8 on a chip (cmos 6120 cpu).? The APU was a z80 at 4mhz with 64K
ram and could
still easily outrun the I230 and gave me the choice to use 0S278 (a
version of OS8),
WPS (word and list processing), and CP/M-80.
A PDP-10 (BOCES LIRICS system 1970!) serviced over 300 users.? A 36bit
monster.
The CPU and the memory was eight 6ft racks long by two rows big not
including the four RP06s.
That system used the old PDP8i to keep it fed (data concentrator).
A PDP-11/23 with a 10MB disk in a single 50inch short cab running TSX or
other time sharing
system usually? supported 4-8 users. It was a 16bit system at that.
They usually fit in the corner.
A Intellect 230 was handily beat by my NS*Horizon system in 1980.
That's allowing for
the fact that the I230 was 8080 powered and ran at 2mhz (2:1 handicap).
I know the
system well as I used it to develop programs for 8048/9, 8085, 8088, and
other micros
of the day till we retired it for a faster box (multibus 8086 at 8mhz in
1981).
So a knowledge of computer history and performance is is something to
>consider.
>Allison
Sorry.. when I said 'beat'.. I meant weight only. ?And only for the main PDP-8e system unit. ?Was not comparing processing speed. ?But I appreciate all the info you gave me there for sure. :)
So I have this memory of a set of law promulgated by an engineer at DEC, one
of which was something to the effect that 'all digital circuits are made out
of analog devices'. However, my memory doesn't recall where I saw this, and my
Google-fu is not strong enough to turn it up. Can anyone help?
Noel
> From: Brad H
> So I wondered what PDP guys did to keep interested and how much they
> actually used the machine over the course of, say, a year.
Well, I have to get all mine running first... ;-) Seriously, though, I'm
looking at several years of work to get them all running. (And there are also
various peripherals to do, like tape drives, etc.)
And then there's the project Dave B and I have to creat new blinkenlitz
panels (not to mention SD-card based mass storage to replace those cranky old
disk drives for every-day running, the original purpose before the
blinkenkraze hit us :-) for the PDP-11's...
Seriously, though, like all hobbies, it's primarily to amuse me, not to
create anything useful. And it's _very_ successful at that.
Noel
> From: Tony Duell
> It's one of Don Vonada's laws.
Ah, thank you, thank you, that's the one I was looking for!
I knew _you_'d know it! :-)
> A related one ... came from Professor M. V. Wilkes
That one I _did_ remember (although I couldn't remember if it was Wilkes or
Wheeler - I knew it was one of those Cambridge guys :-), but it's not quite
as pithy as the Vonada one.
Noel
Lately, some list posts have begun appearing in Base 64 format. I read
the list in daily digest mode, and these posts are not converted to
anything sensible, all I get is a long string of hex codes. This is
slightly frustrating, since I have to look up the post in the list
archive if I want to read it, and then it may turn out to be something
that doesn't interest me at the moment. Is there a way of dealing with
this, apart from humbly requesting posters to not post in Base 64?
Jonas
> From: Eric Smith
> The full set from the book (any typos are mine)
Since you'd done all the hard work (typing them in), I uploaded them (less
typos :-), to:
http://gunkies.org/wiki/Vonada's_Engineering_Maxims
Interestingly, there's a typo in the originall: "worse-case". :-)
Noel
Hi folks,
What are people doing for keys for the 8e? Is there a standard key used for all of them? Or do I need to have one made with some specific serial number of my key lock? I did some googling of this issue but wasn't able to get info.
Thanks
Eugene W2HX
