The I/O utilities are described in  the manual "HP75 User's Library Solutions: I/O Utilities" which is stored in the http://www.hpmuseum.net  as file 00075-90122_75_IOUtilities_UsersLibrarySolutions_29pages.pdf

The LEX file itself is at http://www.series80.org/Misc/HPILCMD.SWP

And here is the text of a posting I made in the user's forum of http://www.hpmuseum.org many years ago:

-------------------------

The SENDIO command is included in the HPILCMD LIF supplied with the HP-75 I/O Utilities.

http://www.series80.org/Misc/HPILCMD.SWP

The file in HP LIFUTIL format (DFS to LIF file type preserved xfer type).

You can get the LIFUTIL binary from ftp://ftp.hpmuseum.org/lif/lifutil

If you run into trouble the easiest way to remove the header is to copy the file skipping the first 0x200 (512) bytes. i.e.

        dd if=HPILCMD.SWP of=HPILCMD bs=256 skip=2
And then you have to restore the directory info:

HPILCMD       -8055        5      256      18
Best Regards

**vp

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The problem is that even with the HPILCMD on a card, developing programs for the 75 will be a pain. You should consider purchasing some mass storage device such as the PIL-Box (a modern device which connects a PC with the HP-IL bus creating virtual printers and diskettes drives). Once you have that, you can easily transfer the HPILCMD to the 75, rather than requiring a magnetic card.

Regards

Vassilis

www.series80.org

On Tue, Oct 16, 2018 at 11:21 PM, Serhiy wrote:

I was also thinking that I may try using PP as edisc to HP75 and transfering code from it, if I could actually transfer it via terminal from PC to PP.

Well, there is a way to use the Portable Plus as a HP-IL mass storage by using Emu41p (the PP version of my Emu41).
When Emu41 is idle (light sleep), an external HP-IL controller (your HP75) can access the emu41p virtual drive. And there is a file transfer (x-modem protocol) built into Emu41p to  load an image file from PC for the virtual drive.
A bit complicate and probably not very efficient, it should work but I didn't test it.

Can you give more details about your Ludlum 2200-12 lab equipment? I assume it is using HP-IL since you are trying to use the PP or the HP75 to drive it.
We are a few here very interested by special HP-IL equipments.

J-F

Have you considered using a 71B as a controller?

• Smaller
• Faster
• More memory capability (PP EDISK not needed)
• More support in the online community

Dave

Serhiy,
good that you got one of the later machines with the "green" Screen. The earlier ones have a more gray LCD which is even harder to read.
Looking into your ROM drawer I see that there is a SERIES/100 BASIC ROM.
I believe this is not yet archived as a ROM Image on the web. Do you have the equipment to read the contents of this EPROM and save it as an image file so that others could burn an EPROM copy?
Martin

Serhiy,
good that you got one of the later machines with the "green" Screen. The earlier ones have a more gray LCD which is even harder to read.
Looking into your ROM drawer I see that there is a SERIES/100 BASIC ROM.
I believe this is not yet archived as a ROM Image on the web. Do you have the equipment to read the contents of this EPROM and save it as an image file so that others could burn an EPROM copy?
Martin