Miscellaneous documents

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I present here some documents that are not found elsewhere but do not fit in my other pages.

HP-41C Articles:

  Calculator program evaluates EMI from digital systems in Electronic Design, Nov. 1980

  HP-41C generates a pseudorandom sequence in Electronics, May 19, 1981

  Calculator plots time response of inverse Laplace transform in Electronics, July 14, 1981

  Interpolation program runs on HP41 in EDN, Oct. 13, 1983



HP-IL Articles:

  Bit-serial interface loop links portable instrumentation in Electronic Design, Dec. 1981

  The Hewlett-Packard Interface Loop – HPIL in Byte Magazine, April 1982

  Designer’s Guide To The GPIB/HPIL in Digital Design, June 1982

  A system solution to HP-IL equipment interface , Siliconix Application Note AN83-6, Dec. 1983



Flyers and Catalogs

Modem 300 Plus, Firmware Specialists, 1986

Interloop HP-IL products, 1988

Educalc #49, 1990 (partial, from http://dodin.info/wiki/pmwiki.php?n=Ppct.Educalc)
    Note the Interloop HP-IL cards (p.50)

Educalc #59, 1993
  Note that there are no more any HP-IL products, except the HP-71B surplus (p.47)


Technical documents

HP9114A firmware description , Hewlett-Packard, May 1984

HP9114A firmware hex file , ROM rev. 09114-15516

Microprocessor implementation of the HP-IL protocol , Mountain Computer, Jan. 1983

HP 3421A Product Note 3421A-1 , Hewlett-Packard

HP 3421A Product Note 3421A-2 , Hewlett-Packard, Aug. 1984

CMT HPIL LCD Display Manual , Corvallis Microtechnology, 1988 – courtesy of Lew Thomas

Interloop Model #210 manual and schematic , Interloop, 1988 – courtesy of Paolo Marri

Homann-Bell CR1200B Programmable Power Supply Manual (HP-IL), Homann-Bell

HPIL to HPIL interface "Loop-de-Loop" manual , Hewlett-Packard, June 1982
   (never released, see the full discussion on the HP75 group)

Ludlum Model 2200-12 ratemeter manual (HP-IL), Ludlum, Feb. 1984
     (see here for more documentation and pictures)

More recent documents:

HP82166 HP-IL converter evaluation board notes , J-F Garnier

HP-71B HP-IL module 1A investigations , J-F Garnier, Nov. 2009

Notes on the HHP 96K RAM module , J-F Garnier, March 2008

More notes on the HHP modules and 1LJ4 interface chip , Paul Berger, April 2018

Use of HP-71B ports 6 and 7 , J-F Garnier, May 2018

HP-71B / HP-75C Math ROM comparison , J-F Garnier, July 2018



J-F Garnier, 2018