No Sync on digiAV.

[networkingyuppy]

Hi there,
The board has been assembled and I was able to flash the firmware successfully on the CPS2 DigiAV board, but I'm not getting a sync signal at the moment with the board. Connected the PCLKx2 to pin 4 and grounded it on pin 7. Voltage on the 5v line shows reading of 7.65v running under an arcade cabinet while power and ground is connected to the CCX cap.

[marqs85]

Which pin 4 and 7 are you referring to? Here is a pic of PCLKx2 connected just below the oscillator. Did you check whether that CCX cap is connected to 5v rail before hooking to it? 7.65V sounds abnormal and dangerously high for the board.

[networkingyuppy]

This is a revision 4 cps2 a board. Underneath the board shows JP4 instead of FB37. I've also got the proper readings on the board, just using a bad multimeter atm. So basically the PCLKx2 is wired on the 74P32 chip beneath the oscillator on Pin 7. I've noticed that Pin 4 and 7 share the same signal on that chip as well.

[marqs85]

Ok. I just added a pre-built .jic file on the repo (under output_files/) - I suggest trying that just in case something has gone wrong if you built the bitstream yourself earlier. If that doesn't help, you can try defining DEBUG and recompiling SW part (assuming you're familiar with the flow), after which some debug messages can be seen on nios2-terminal.

[networkingyuppy]

I'm not familiar with it unfortunately. I've been talking with Undamned as well about the pinout on the 74F32 chip, and he says to wire it up on Pin 5 from there to PCLKx2 and then add a 10k resistor on the down signal as well. Will keep trying!