Problem with this is that the motor speed is controlled by the CD-ROM intelligence. It has to know how fast the CD is spinning. When controlling 3 systems with 3 different speeds with the same motor you wouldn't be able to really do it. That and the connections can't be shared easily (Sega-CD doesn't have a variable speed motor like the DC, so it only has a couple pins where as the DC one has several and needs to be told what speed to run at).carslayer wrote:What if we just combined a sega CD, Saturn and DC?
Getting them all to share a laser would be near impossible, so I would just remove the motor that spins the disk from the sega cd and saturn, and arrange it so that the dreamcast motor would be connected to all of the system drives, while eachsystem would have it's own lazer, arranged like this a big T, with the motor where all the tracks join and each arm of the T representing the lazer track for a different system. then integrate them to shate a single video port with a built in switchbox and a shared power supply.
just a thought. easier than getting them to share a drive, anyway
Also when you extend the motor out, it would have to be a further distance, altering the resulting speed. And the 3 drives connected would add resistence also altering the speed. So even if the DC was able to tell it how fast to spin, the motor would spin at the speed, but the spindle further down the mechanism of pulley's wouldn't.
and also why... you'd still need three seperate trays anyways to work like this (so that the lasers would fit). Why even remove such a small part like the motor, when you'd still need all 3 trays?
As for the shared video... that actually isn't that hard (as long as you don't mind scrapping the VGA support of the Dreamcast). You'd just need a new composite encoder chip and put a tripole daisy switch for the sync, R, G, B between each video source (prior to their existing composite encoder chip)... and push them all into the more up to date chip. Then the tripole daisy switch could just swap connections in referrence to what system you activate at that moment. (using another external tripole switch for power that is linked with the daisy switch).
basic sketch
Eat dat melon biotch!