HP41C with Rp Pico attached
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06-22-2023, 01:10 PM
Post: #15
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RE: HP41C with Rp Pico attached
Hi Andrew,
I used your code as a base, but added another OLED driver. I also implemented my own font (14-segment lookalike with original charset). I thought I could use a single bi-directional levelshifter for ISA, but maybe changing the direction of the gpio on the fly makes things hickup. The Tiny2040 doesn't have that many gpios, but it is small and easy to use. I use the SDK, compile, pressing boot+reset and copy the file from the PC to the RPI, so turnaround time is very short when developing (and I don't need a second Pico for flashing). 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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