Extended IO ROM incompatible with 1F IL module ROM

[born2laser]

(12-15-2024 09:53 AM)J-F Garnier Wrote:  Thanks for your investigation, and sharing this up-to-now unknown version !

I will comment more about the HP-IL module prototypes and the "PIL" name in another thread.

J-F

Thanks J-F, I was actually going to do just that, ask my history question on a new more suitably titled thread, but just then I got delivery of a new toy (90's vintage digital scope) and was antsy to check it out, so I put everything here.
Just to wrap things up here, as I needed the DIRX functionality I ended up learning more than I expected about the IL loop and implemented it in FOCAL using low level calls in the extended IO module, that thank goodness behave as advertised. I am attaching it here for reference in the (admittedly unlikely) event somebody else runs into the same problem. DIRXX is obviously much slower than the module function, it does the same thing as DIRX, but it scrambles the stack.

Juan