Hi Frank, On Mon, Feb 06, 2017 at 07:00:46PM +0100, Francesco Messineo wrote: >On Mon, Feb 6, 2017 at 6:54 PM, Marko Mäkelä <firstname.lastname@example.org> wrote: >>If I remember correctly, the ATtiny2313 is a drop-in replacement of >>the AT90S2313 when it comes to this circuit. There is a separate >>firmware that was adjusted for the software-side differences between >>the ATtiny2313 and AT90S2313. > >yes I've seen the separate firmware, but I seem to remember that it >required a different xtal frequency and some pin changes. It has been a >while since I've studied that, so maybe I'm not remembering correctly. The newest firmware in http://www.ktverkko.fi/~msmakela/8bit/c2n232/firmware/ appears to be c2n232c-5.zip which supports both the ATtiny2313 at 18.432 MHz and the AT90S2313 at 8 MHz. The latest circuit board version was designed and manufactured by Nicolas Welte. The circuit board was a bit longer than the last one that I designed, to avoid any shortening of the plastic case (25-pin to 9-pin D connector housing). There was a serial bus DIN connector in the middle of the circuit board. I think that the older circuit board versions should work equally well; just replace the microcontroller and the crystal. >sure, I didn't want to imply that. It just seemed to me that was >abandoned more or less when ported to the tiny2313 maybe? I got a family and left the academic world in 2003, and after that I did not find that much time for hobbies. >I didn't find a complete schematic of the new version IIRC. I cannot find the schematic or circuit board layout either. But it really is very straightforward. Marko Message was sent through the cbm-hackers mailing listReceived on 2017-02-06 21:01:35
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