We had a flood in our office a few months ago, which destroyed our D8X panel which had v7.8 firmware.
We had to get it going again in a hurry, and I sourced a used panel on eBay, which worked fine. The new panel is only version v5.8
I was using the serial output on the old board, but I just cannot get it working on the new one.
The NESSCOMM program works fine, so I know my serial cable is working, but there's just nothing coming out the serial port when I'm not in installer mode.
I've enabled all the bits in the "Serial Output Options" register (P199E).

This is supposed to work in all firmwares from v5.6 on, so v5.8 should be ok.
Another user posted here:
that they had problems with v5.8. He hasn't been on this board for a couple of years, so not sure if they found a fix.

So, does anyone know a trick to get ASCII output to work in v5.8 on a D8X ?