In a message dated 5/29/99 6:28:09 PM Pacific Daylight Time,
> Yes, but shipping to the UK would be too expensive :-)
Effective May 30th, 1999 the United States Postal Service changed it's
"Global Priority Flat Rate Envelope" service to $9 US for up to 4 pounds if
it will fit in a USPS 10"X12" Envelope.
This size package would take a couple of S100 cards wrapped in anti-stat &
This is a much cheaper international rate that the USPS is starting to
promote. Their web site is www,usps.com. The rate calculators work best. The
new international rate sheet is in Adobe pdf format and loads slowly (19
pages). The calculators are html but are not updated yet.
A 6"X8" envelope is $5, and, I think, up to 4 pounds. I have used the small
envelope to ship software to Hong Kong.
Does anyone remember this Hayes novelty? I saw a pic in an old magazine
and thought what a neat idea -- a serial programmable clock in the same case
as a Hayes Modem.
If anyone comes across one of these, I'd be interested in it. Also, if
anyone has a manual for this, let me know. In the absence of an actual
clock, maybe I can hack one together with Stamp.
[ Rich Cini/WUGNET
[ MCP Windows 95/Windows Networking
[ Collector of "classic" computers
<---------------------------- reply separator
The place where you get the results of an ENIAC is, of course, in the
programming of this single-chip ENIAC emulator. Now, I too, would
like to have the real thing (how many were made?) but, I do not
expect my want to be fulfilled. Yet, via this chip, I may still afford
the pleasure of programming an ENIAC. For the hardware tinkering
people on this list, I can understand their dissatisfaction. For those
of us who want to experience the software/user side of things, this
chip is not so much of a disappointment.
William R. Buckley
From: Christian Fandt <cfandt(a)netsync.net>
>Amen, Max. The only thing one would probably get out of that 'radio' would
>be a work-alike thing. Exactly the same for that ENIAC-on-a-chip.
>Work-alike, probably, but no where near the same as having either the real
>thing or a functional replica with tubes/relays/other fun parts.
>Regards, Chris, an old radio collector (or rather, collector of old radios
Today I bought a SC/MP wirewrapped board. Does anyone know of a site with a
data sheet? My search came up with what is known as "SC/MP II", including a
description of a "MK14" project in Practical Electronics mag. In
particular, the chip on my board requires an unknown neg. voltage on pin
40, instead of +5 Volts on the later NMOS versions. The actual part No. is:
<A last thought on this for you legal guys out there! Would'n it be
<sensible to design some kind of 'declaration of trust' regarding private
<content of equipment. So that the receivers can be held responsable for
No, you that declare you are repsonsable where you formally were not.
You then place yourself in a position of trust for the data. If your disk
cleaning efforts were not adaquate and someone read them and misused the
findings YOU ARE IN TROUBLE and the original owner can sue you for breech
of contract. Liability is then directed to you, and the original owner
then has limited libility, both the donator and thir clients can sue you
for cause. Don't go there unless you want to make it a business.
<any irrisponsable disclosure of private data. And also that the donator
<has signifies that he has (had) knowledge about the informational
<content of his donation. In serious cases a Judge may decide who has
<acted liable. But most of ours would live by such a contact and it may
<endorse reliable image about the restoration and preservation of classic
<hardware & software.
If it's important, maybe. Consider that no responseable source of
significant equipment would leave mission critical data or files behind
unless the equipment were inoperable. In that case you may wish to operate
as an agent to that donator... be careful as you are taking the role of
a contract engineer to them and if you fail to recover the data and loose
it or fail to remove it totally you may be in trouble. Again desireable
equipment may warrent.
I did some checking and here is my lawyer friends call:
You get a system with stuff on the disk.
They (donator) failed to perform due dilligence and due care in maintaining
confidence. IF and unless there is a provable agreement that data is fair
game. The however of this is while they may loose in a suit, everyone
would in the process so long as there is not malicious intent on the part
of the person that recieved the equipment. They (donator) would injure
themselves, their clients and it would cost to defend. In short you can
be sued, they would likely loose, it's costly to win on both sides and the
would not help anyone and would hut everyone.
Best bet is if you find crap on the disk and have not been asked or told,
delete it and forget it.
<Today I bought a SC/MP wirewrapped board. Does anyone know of a site with
<data sheet? My search came up with what is known as "SC/MP II", including
<description of a "MK14" project in Practical Electronics mag. In
<particular, the chip on my board requires an unknown neg. voltage on pin
<40, instead of +5 Volts on the later NMOS versions. The actual part No. is
That is the early Pmos part (SC/MP and not the II) and the voltage there
is -7v (Vgg). Never saw that particular schematic (Practical Elect.) there
was one in an early kiloboaud, byte or interface age you could look at for
I have a working example of the inexpensive board national sold with that
chip, 256bytes of ram and a monitor.
I'd doubt there is a site with a data sheet unless someone got permission
form National Semi to scan one.
<It uses about 175,000 transistors! Wow, what an increase, just think of a
<computer with 175,000 triodes, and compare that to an ENIAC (much less,
<the power required). Or some years later, one with 175,000 discrete
<transistors. Now that I remember, this was a thread some months ago... top
Your babbeling. The original use some 15000 tubes of single and dual types.
The interconnecting logic used many diodes. What is missed is the in many
of the tube (early transistor too) machines pulse transformers, diodes and
capacitors were used to interconnect logic elements. To perform the same
logical function of a tube FF on a CMOS FPGA/FPLA you will not less than
6-10 transistors due mostly to differeing interconnect schemes and tube
logic have load resistors where cmos having a complmentary transistor. The
difference showing in the power used (15KW VS ~1-2W).
The key is they are implementing archetecture not direct circutry.
<> There are various systems like this. The most common (in my limited
<> experience) being a JTAG boundary scan. Basically, some LSI devices have
<The system Tera uses is quite similar, except that it extends to the intera
<circuitry of the chip rather than just the boundary (pins) of the chip.
Look again. They are likely the same thing. Most boundary scan approaches
allow not the pin level output but a snapshot of the core logic to be
brought out as a serial bit stream on just a few pins. It is an
approximation of the PDP-8 style front pannel where most of the internal
working can be seen in lights and allow diagnosing say a stuck bit in the
ACC or core.
<>uPD414 is the equivalent of a 4027 DRAM (4096 x 1bits). What's a 2414?
<> Did you mean 2114, or 2147?
I was wrking for NEC when that part was current. I have an old catalog and
the MK4027 was the one I was trying to remember.
well . . . we all know what those are. This makes a great deal more sense!
From: Don Maslin <donm(a)cts.com>
To: Discussion re-collecting of classic computers
Date: Saturday, May 29, 1999 9:55 PM
Subject: Re: Vintage S-100 cards
>On Sun, 30 May 1999, Pete Turnbull wrote:
>> On May 29, 16:28, Don Maslin wrote:
>> > Subject: Vintage S-100 cards
>> uPD414 is the equivalent of a 4027 DRAM (4096 x 1bits). What's a 2414?
>> Did you mean 2114, or 2147?
>Bit of a slip twixt (thought) cup and (finger) tip. I think 2114 was the
>reference I intended.
> - don