HP-41C HP-IL REMOTE & LOCAL commands

[rprosperi]

Those results are certainly unexpected!

I like your description of AUTOIO sending the identical sequence twice: "Special".

Initially I wondered if the sequence is sent twice due to possible latency in some of the early HP-IL devices, but then realized HP-IL is literally bit-serial, so failures replying (due to delays) to the initial sequence would hang the loop even on the first time around.

The docs for the 41 IL modules was weak, especially for the Extended IO and Devel ROMs. No help there....

In the end, did you find any practical difference in the loop behavior after setting the different modes?