New Cumulus PCBs Working
Posted by retromaster on January 5, 2011
I finally managed to assemble one of the new Cumulus boards, and I am glad to report that it works fine🙂. As a matter of fact, I received the bare boards a few days ago but I did not have the 32Mhz oscillators handy so the boards had to wait a bit until I got the part.
Aside from some changes in the CPLD and PIC pin assignments, no changes to the firmware were necessary. In my first tests there did not seem to be stability problems. The only (rather strange) problem I encountered is that the LCD fails to initialize at times (showing nothing), but the PIC definitely keeps on running, because even in this state the floppy emulation works fine. Hopefully, this issue should be fixable.
Here is what’s next (in no particular order):
1. Fix the remaining (firmware) issues and implement some of the missing basic functionality (e.g. writes, user interface).
2. Prepare the enclosure and fit the board in it.
3. Order some CumuluBus PCBs.
4. Prepare the web page for Cumulus and release the current sources, gerbers, etc. under GPL.