HP41C with Rp Pico attached
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07-26-2023, 11:45 AM
Post: #35
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RE: HP41C with Rp Pico attached
Thanks for the update Meindert!
I'm following your progress on the PIO with interest! The disassembler works very well now, so I can trace execution (without missing any lines) without any problems. All is still done in the Pico, but I think I will move the disassembler to a PC application instead so I could add eg. symbols support and add some filtering in the Pico instead (eg support for start and stop addresses). I noticed that if I load the Pico with that as well, I start to get buffer overruns and start to drop instructions. I will also try to drive FI as well, that way I could emulate peripherals, ie indicating that there is data available, and then provide data that could be received by the HP41. I started to look at this, and emulating the Wand (data available flag and data buffer) looks manageable, so that it should be possible to easy send a Focal program over USB, which is then stored directly into the 41 RAM. This would make it very easy to transfer a program from a PC directly into the 41 without going through eg. a HPIL drive. Let's see if I can find time for all of this ... Cheers, Thomas [35/45/55/65/67/97/80 21/25/29C 31E/32E/33E|C/34C/38E 41C|CV|CX 71B 10C/11C/12C/15C|CE/16C 32S|SII/42S 28C|S 48GX/49G/50G 35S 41X] |
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