Communicating with the HP 3421A Data Aquisition/Control Unit

[Dave Frederickson]

(07-26-2024 10:26 PM)Garth Wilson Wrote:  Note however that the special ROM is not mandatory; it might only make your program a little easier and more compact. 

I think you might be selling the Data Acq ROM short.
At 64k, the Data Acq ROM is the largest application ROM for the 71B. The large-format manual is 233 pages long. And the ROM includes an overlay which can be installed into Emu71. That's quite a lot of baggage for a ROM that "makes the programming a little easier and more compact". Finally, it costs nothing to install the ROM into Emu71.

Edit: An article highlighting the features of the Data Acq ROM can be found in the March 1986 edition of the HP Journal.

http://hparchive.com/Journals/HPJ-1986-03.pdf