Multiple dcons writers

[Dylan Cochran]

I've looked in the man page, and haven't found any information
regarding multiple writers across the bus to dcons; I'm pretty sure it
wouldn't work, but I'm not sure of the behavior defined for that
scenario. Would both writers write to the same address given by the
configuration rom, and stomp on each other, leaving a mess, or would
it be serialized by the firewire card in some way? Or would an error
be passed up to dconschat?