Theres a way to do it. but its not going to be easy. Youll need a DVD brain that allows IDE drive to work as a DVD player, and has a composite output.
you can then attach that cable as a Y-Split to an IDE/SCSI adapter. This was explained earlier in the thread.
But then from that point, you can make a MCU-Arduino or compatible style control PCB. This would have a mux matrix to switch between the DVD decoder and the IDE-SCSI adapter. There needs to be another mux on the same control circuit, that wedges between the composite NTSC signal output from the tuner and selects DVD or Tuner.
The arduino board can be connected to the macs serial port. This way, You can run an app on the MAC to switch it from CDROM mode to DVD video mode. ;-)
Or if your clever, and have documentation on how to operate the mactv hardware, you could write your own apple video player style app, and put a DVD button on it. Soon as you press DVD, arduino gets the signal and switches everything over.
Thats just the hackerish option.
The only other option, is make a proprietary PDS card that is a off-board decoder. Kinda like the old G3 stuff.
Only way this would work, is use a SCSI DVDROM, it would become a bus-master and spool up the drive, fetch the DVD information, decode into a raw frame-buffer video and output it into display refresh memory. This is assuming of course the datarate of the SCSI bus and drive itself can keep up with the correct mpeg2 decoding rate.
you can then attach that cable as a Y-Split to an IDE/SCSI adapter. This was explained earlier in the thread.
But then from that point, you can make a MCU-Arduino or compatible style control PCB. This would have a mux matrix to switch between the DVD decoder and the IDE-SCSI adapter. There needs to be another mux on the same control circuit, that wedges between the composite NTSC signal output from the tuner and selects DVD or Tuner.
The arduino board can be connected to the macs serial port. This way, You can run an app on the MAC to switch it from CDROM mode to DVD video mode. ;-)
Or if your clever, and have documentation on how to operate the mactv hardware, you could write your own apple video player style app, and put a DVD button on it. Soon as you press DVD, arduino gets the signal and switches everything over.
Thats just the hackerish option.
The only other option, is make a proprietary PDS card that is a off-board decoder. Kinda like the old G3 stuff.
Only way this would work, is use a SCSI DVDROM, it would become a bus-master and spool up the drive, fetch the DVD information, decode into a raw frame-buffer video and output it into display refresh memory. This is assuming of course the datarate of the SCSI bus and drive itself can keep up with the correct mpeg2 decoding rate.