Quote Originally Posted by flotulopex View Post
Hi Darrel,

No, I use "1" since I do not include any variables definiton file.

If I'm not wrong, I read that "1" stands for MSBFirst in the PBP compiler manual.

I also took big care to make short wiring and good power feed (caps) as stated in the MAX7219's datasheet.

Btw, I clock my PIC at 4Mhz.
Do ya got the code handy for us to see, maybe a schematic we can look at?
At 4mhz, the fastest you could shiftout (using the hardware) is 1mhz (if I remember right). So, assuming everything else is ok, you could run the PIC all the way up to 40mhz and be alright.

I have to wonder why you aren't using a PIC to handle this job instead of the MAX7219 (besides having to develop a 2nd PIC application in addition to the one you're working on in the 1st place)?