HP85A Stuff

From: Joe <rigdonj_at_intellistar.net>
Date: Wed May 13 14:40:13 1998

Greg,

  I'm glad to hear there's someone else interested in the old HP-85s. I
have four of them myself. I've repaired the feed rollers by removing them
and cleaning the old goop off and then shrinking a piece of heat-shrink
tubing onto the hub. You may have to experiment with the thickness.

  After you intall the ROMs, their functions are available in BASIC. You
don't have to do anything to "link" them. I have books for all of them but
there's a LOT of pages. Too many to copy. Look at "www.ebbsoft.com", he
has brief descriptions of the BASIC commands posted there. I'm not sure if
he has the ROM commands listed or not. E-mail me if you have more questions.


   Joe

At 10:13 AM 5/13/98 -0700, you wrote:
>I spent a little more time on this guy and have finally gotten the tape
>drive to work--sorta. The rubbery roller in the center to the left of
>the head is seriously corroded away (as if some anti-rubber solvent or
>high heat came in contact with it) which makes it not work too well.
>Cleaning it up as best I could, and then doing multiple retries, getting
>frequent READ or SEARCH errors, have allowed me to store and retrieve
>some simple programs. I guess I'll be opening this up and trying to
>replace that.
>
>Now, questions: I have a ROM Drawer filled with six option ROMS like
>Assembler, Input/Output, Mass Storage, etc. First, how do I implement
>the physical link to the I/O devices? There are zero physical port
>connections on this box...(?) Second, how do I access the ROM code from
>the BASIC prompt? I'm sure there's a lot of tricky stuff involved,
>making the manuals indispensible, but since I don't have them, any quick
>tips would be appreciated.
>
>--
>mor_at_crl.com
>http://www.crl.com/~mor/
>
Received on Wed May 13 1998 - 14:40:13 BST

This archive was generated by hypermail 2.3.0 : Fri Oct 10 2014 - 23:31:12 BST