Sorry guys have been so busy lately.
Here is the completed automatic KVM switch, this allows use of two graphics cards hooked to one machine.
It will allow display 1 to be connected to the arcade machine on bootup, once windows/linux loads the KVM will automatically switch to the second output.
a hacked HD4890 using calamity drivers.
The purpose is to allow native bios support for configuration maintenance, then to load a hacked 4890 to have a wide range of resolutions available
Here is a picture of the custom kvm
very poor video of it in action in the machine.
and it working on the bench,
Currently working on a machine gun mode for the Namco recoil gun!