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HP Forum Archive 06

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HP-75 I/O Utilities
Message #1 Posted by Vassilis Prevelakis on 18 July 2001, 3:58 a.m.

Anybody has the programs included with the 00075-90122 HP-75 I/O Utilities Solutions Book?

I'd really appreciate receiving a copy



Re: HP-75 I/O Utilities
Message #2 Posted by Tony Duell on 18 July 2001, 1:50 p.m.,
in response to message #1 by Vassilis Prevelakis

I have the HPILCMDS program, which is the main (if not the only) program from the I/O Utilities solution book. The problem is, unlike all the other solution books, which were BASIC programs, this is a machine language LEX file. I am not sure how you'd transfer it to the HP75 other than reading it from a magnetic card or a LIF disk or tape. If you can think of a way to load it, I can see what I can do.

Re: HP-75 I/O Utilities
Message #3 Posted by Ex-PPC Member on 19 July 2001, 7:12 a.m.,
in response to message #2 by Tony Duell

Unlike the HP-71, you can't key in a LEX file into a bare bones HP-75. You need either to download it from some mass storage media (mag cards, tape, floppy, HPIL device, etc), or else you need a well-known loader BASIC program, but unfortunately this program requires some version of the PEEK and POKE keywords, and that aren't on 75's BASIC but must be provided by some LEX file, PEEKPOKE.LEX for instance.

This obviously is going in circles: you need a LEX file to be able to key in another LEX file. The point is, perhaps it's easier for you to get some version of the PEEK/POKE keywords in the first place.

If you do, you can then key in the loader BASIC program, then you can key in other LEX files directly from the keyboard, assuming you've got them in printed form in hexadecimal format, many are available in that format.

The corresponding BASIC programs for an HP-71 are called MAKELEX (to key in a LEX file) and DUMPLEX (to generate a hexadecimal dump of a LEX file already in memory). This will work on a bare bones HP-71 because it does have usable PEEK and POKE already on its standard BASIC in ROM, but most unfortunately, the HP-75 does not.

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