At 02:08 PM 5/10/99 -0700, you wrote:
>
>
>--- Joe <rigdonj(a)intellistar.net> wrote:
>
>First, I wrote:
>> >Hey. I've got one of those, just the IR hardware, not the CPU or monitor.
>> >I picked it up at the Dayton Hamfest a couple of years ago because it
looked
>> >neat.
>
>> Sounds like you got one touch screen parts for the later TouchScreen II
>> computer. It was an option on that computer and some terminals. It was
>> built into the HP 150.
>
>Ah. Got it.
>
>> I THINK that all you have is a bezel with two rows of LED IR emitters
>> and two rows of photo receptors.
>
>That's the one!
>
>> All you had to do to install it on the TS II was to pop out the old
>> bezel, plug in the cable and snap this bezel in place.
>
>Are there any specs out there for the TS II that might be useful in
attempting
>to interface one to a different kind of computer?
No, I don't think so. I think I have a service manual for the TS II but
I don't think it gives any details about the touch screen. I expect that
you would have to at least write a device driver before you could add it to
another computer.
Joe
>
>Thanks,
>
>-ethan
>
>_________________________________________________________
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>
>
What are the physical dimensions of this transformer, Eric? I've been
rooting around in that portion of the basement which has such things.
Perhaps I have a potential drop-in replacement. I know I still have a
couple of the transformmers from the ALTAIR, though I don't know which one.
You may recall I bought a load of a couple of hundred back in the late
'70's. I've got a number of different transformers that might serve.
Dick
-----Original Message-----
From: Eric Smith <eric(a)brouhaha.com>
To: Discussion re-collecting of classic computers
<classiccmp(a)u.washington.edu>
Date: Monday, May 10, 1999 2:14 AM
Subject: Re: replacement transformer wanted for IMSAI power supply
>Dave Dameron <ddameron(a)earthlink.net> replied about my IMSAI PSU woes:
>> If the voltages checked out without a load, look for a very
>> good short somewhere.
>
>The incoming AC was measured at 120.0 VAC. The primary has taps for
>nominal, -10%, and +10% input. When I received it, it was apparently set
>for -10%. I say apparently because the transformer doesn't match the one
>in the IMSAI manual. The no-load DC voltages are expected to run high, but
>these were even higher: 25V vs. 18V, 11V vs. 8V. I switched it to the +10%
>tap, and now under some load (CPU, one memory card, front panel) the DC
>voltages are very close to the nominal values. So I suppose this could be
>indicative of shorted turns in the primary.
>
>> The 5 Amp line fuse didn't blow?
>
>Nope. But the transformer emitted a foul stench after a few minutes. It
>wasn't hot enough to be painful to touch, but it was close.
I've run into Intersil's ICM7228 once again and find my data book doesn't
cover that number. It's date coded '87, so It's probably in the last book I
got from Intersil before they were acquired by GE.
Has anyone got a complete sheet on this part? I believe it is a
multi-decade counter/display driver, or maybe just a display driver.
thanx
Dick
--- ss(a)allegro.com wrote:
>
> Re:
>
> > I've been playing with a HP 150 recently. Do any of you physicists out
> > there know how the touch screen works?
>
> Infrared beams...at least for the HP 150 A and B.
>
> The first two models had visible holes where dust could get in and obscure
> the IR LEDs. Later, HP added an IR-transparent bezel over them to avoid
> that problem.
Hey. I've got one of those, just the IR hardware, not the CPU or monitor.
I picked it up at the Dayton Hamfest a couple of years ago because it looked
neat.
Is there enough information out there to attempt to interface one of these
units to another kind of computer? There is a ribbon cable with fifteen
to twenty wires coming off of one side.
-ethan
_________________________________________________________
Do You Yahoo!?
Get your free @yahoo.com address at http://mail.yahoo.com
--- Joe <rigdonj(a)intellistar.net> wrote:
First, I wrote:
> >Hey. I've got one of those, just the IR hardware, not the CPU or monitor.
> >I picked it up at the Dayton Hamfest a couple of years ago because it looked
> >neat.
> Sounds like you got one touch screen parts for the later TouchScreen II
> computer. It was an option on that computer and some terminals. It was
> built into the HP 150.
Ah. Got it.
> I THINK that all you have is a bezel with two rows of LED IR emitters
> and two rows of photo receptors.
That's the one!
> All you had to do to install it on the TS II was to pop out the old
> bezel, plug in the cable and snap this bezel in place.
Are there any specs out there for the TS II that might be useful in attempting
to interface one to a different kind of computer?
Thanks,
-ethan
_________________________________________________________
Do You Yahoo!?
Get your free @yahoo.com address at http://mail.yahoo.com
Thought those on the list that are interested in OSI
might want to see this. From an OSI engineer who still
wishes to remain anonymous:
> Hi Bill,
> I haven't forgot you, just got around to pulling box
> out of storage.
> The plastic cases are C1P Series 2. I ran across a
> usage report dated 11/24/1980 that indicates we had
> plastic shells in stock then. Those plus what we had
> on order at that date was for about 1000 units. Average
> weekly usage on the report was 28.5 units. I don't have
> any more specific figures than that. I know we shipped
> C1P Series 2 units, but I have no idea of the total.
...
> If you're not aware of it, the C1P plastic cases were
> simply top and bottom shells that attached to a C4P metal
> case. The C4P case used the same metal, but had the walnut
> sides. There were metal case C1Ps before that. From the
> literature I have, it appears the metal case C1P shipped
> <until> about August of 1978. An October 1, 1979 sales
> information release still showed the metal cased C1P.
...
> The same 11/24/1980 usage report shows 4 560ZB PC boards
> in stock with none on order and average weekly usage zero.
> My guess is that these are the remainder of a run of 5 or 10.
> They are very rare. I believe I saw a board once. I never saw
> one operating. I did not design it. The 560Z was a redesign
> of the earlier 460Z that I don't think I ever saw. The 560Z
> board ran the Z80 and Intersil 6100 micros. I have a 560Z
> schematic dated August 1977 with status indicated as
> "Production". The 460Z is in a March 1976 price list and
> appears to only have supported the Intersil 6100. Both boards
> require a OSI 6502 based CPU board as a host. I started at OSI
> November 1977. The 560Z board appears to be the last board
> designed before I became Chief Engineer. I ran across some
> technical information that because of PDP8 unique IO micro
> code, that you could not simply run PDP8 code on it.
Hey,
The B020 that I have has two connectors on it. One, I am assuming is the
15-pin VGA connector. There is also another connector which looks like a
9-pin EGA connector. Is this correct? How do you connect the B020 to the
B008 to make one network instead of two. I will be getting all the support
software for the B020 soon. I know Tony has one, so I will be sending him a
copy. Does anyone else want one?
Also, apparently to use trams greater than size 1, I need jumper pins on the
unused tram slots. Where can I get these?? Does anyone have several spares
that they are not using???? Thanks.
Ram
I've been playing with a HP 150 recently. Do any of you physicists out there
know how the touch screen works? The electronics for it surround the screen
but don't seem to contact it. Some sort of static electricity capacitive
effect on one's finger?
I'm also having a lot of trouble making images of the disks that came with
it. Teledisk doesn't seem to be able to handle the format. Any clues?
Hans Olminkhof
One of the other list members asked me which HP keyboards he should pick up
while surplus scrounging. That has started me on a long delayed project to
make a list of HP keyboards and the system that they go to. I've started a
list and posted it at "http://www.intellistar.net/~rigdonj/keyboard.txt".
If anyone has any additional part numbers or comments please send them to
me and I'll post them.
Joe
I've been sifting through the "heap" some more and find I have a couple of
the TI calculators, a '58 and a '59 and a Printer for these two. Does this
sort of thing interest anyone? I bought these when they were the best TI
had to offer, but don't use them much because there's only one functional
(sort-of) battery pack between them.
If you're willing to spring in advance for shipping and maybe some packaging
material, they're yours.
Dick
