HP41C with Rp Pico attached

[MeindertKuipers]

Quote:HP-41C + 41/USB module + USB cable + computer running emulated IL peripherals (ILPER, pyILPER, ...)
And all existing IL enabled modules will also works → Extended I/O, Plotter, IL-Development, HEPAX, RAMBox, etc.

This is more or less correct. So far I have only tested some basic HP-IL functions, more are to be tested.
And the module can do much more: IR printing, serial printing, emulating user and extended memory, potentially expanded memory. And of course it is a full fledged MLDL and/or HEPAX configuration (HEPAX is not tested yet). Dont't forget the HP41 bus tracer and HP-IL scope. A TIME module emulation is possible, but not done yet. And Thomas has implemented Blinky and the Wand.

Andrew was the initiator of this project, doing the first RP2040 hardware to interface with the HP41C. Thomas took this project much further and I went into another direction by using the PIO for the low-level HP41 interfacing. Christoph, Mike and Jean-Francois were a great help, partly directly in the project, and partly because of their excellent earlier work. And I had a very generous loan of the real Blinky module from someone else, that was instrumental in dissecting the internal workings of the IR module that Tomas did.