I'm trying to hook up my DCT6200 via firewire. I had it working at one point, but I can't seem to get it working again since upgrading my Myth. As you know, getting it working is basically trial and error.

There are several variables involved:
Port #, Node #, Speed (Mbps), P2P vs Broadcast, switching between physical ports on the back of the cable box. I've been trying different different combinations of all of these variables, then going through the following process:

1. Stop Backend.
2. Run Gscanbus, Force Bus Reset.
3. Run plugreport to get Node
4. Go to Mythtv-setup - Change the variables in the Firewire connection

5. Running the following script: (changing X to the node #)
plugctl -n X oper[0].online=1
plugctl -n X opcr[0].channel=63
plugctl -n X opcr[0].bcast_connection=1
plugctl -n X opcr[0].n_p2p_connections=X

6. Restart backend.
7. Attempt to recording something.

This process is tedious and I just can't find a combination that works. I had it working with Port 0, Node 0, Broadcast, and 200MBps at one point, but it doesn't work like that anymore.

Are there any other techniques, methodologies, or suggestions to help me figure out the magic combination that'll get this working?

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Currently running: R5.5, HD5000 x 2, PVR150, Athlon 64 3000+, Chaintech VNF4, 1GB RAM, 2 x 250GB in LVM, MSI NX6200TC -> AA 9A60 -> HDTV

I've actually found what I think is a simpler way to make this work... Power down the 6200 with the power button. Remove the plug from the back of the unit. Wait 30 secs. Plug the power back in. Wait for the box to restart (a dash will appear on the screen and then go away. It may or may not click). Check port and node with plugreport. If it's wrong, unplug and replug the firewire cord, recheck the plugreport output. If it's ok, you should be good to go. Usually all I have to do is power up/down the box as above. I'm good to go until I reboot.

I did find that the built-in firewire on my NF7-S motherboard was unreliable so I switched to a pci card.