Does anyone have National Semiconductor's Appnote AN-359?

From: Ethan Dicks <dickset_at_amanda.spole.gov>
Date: Sun Apr 18 09:31:16 2004

I have this INS8073-based board with four TIL-311s, an 8255, a 6116 and
a socket for another, an 82S23 PROM, and an MM58174A. The MM58174A is
a clock/calendar chip for which I can't seem to get the appnote for.
Google reveals an old location at the Nat'l Semi webpage (it has been
removed from their appnote dir), and a single reference at
http://www.nalanda.nitc.ac.in/industry/appnotes/Natsemi/AN-359.pdf
which refuses my connections (could be down, could be blocking U.S.
access; not sure which).

I don't care if the Digital Library of the Calcutta Technical Institute
is up or not; all I'm after is the app note for the MM58174A. Does anyone
on the list have the file 'AN-359.pdf'?

Thanks,

-ethan

P.S. - I realize a picture speaks a thousand words, but does anyone
recognize the device I've described? It was a gift from someone,
years ago. I brought it with me both as a source of TIL-311s and
because it's a complete INS8073 SBC. From what I can gather so far,
it's pretty close to the Nat'l Semi reference design, down to using
a 741-style RS-232 converter for the console interface. The only
useful markings on the PCB are "MC-1N REV-A". The layout of the
TIL-311s and the four pushbuttons on the corners of the front panel
suggest to me some sort of digital timer. There's a 2x5 jumper block
on the front that appears to be input power, serial in/out and a
few of the CPU flag pins (F2, F3). There's a 1x9 jumper block on the
back that seems to be just options, not I/O, but I haven't traced the
whole board out yet.

P.P.S. - in case you don't recognize the CPU part number, INS8073, it's
a microcontroller with Tiny Basic onboard - you wire on a level shifter,
an SRAM and an optional ROM, and _bang_, a microcontroller with a built-
in development system. It's the same processor used in the RB5X robot.
I have had this board for years, and last year, I picked up a few CPU
chips on ePay for a few bucks each. They are one of the many classic
toys I brought with me to play with through the long, winter night.

-- 
Ethan Dicks, A-130-S      Current South Pole Weather at 18-Apr-2004 13:50 Z
South Pole Station
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Ethan.Dicks_at_amanda.spole.gov     http://penguincentral.com/penguincentral.html
Received on Sun Apr 18 2004 - 09:31:16 BST

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