megavolt85 wrote:pipporamone wrote:Early japanese units have a 5 volt GD-ROM (written on plate). it is not recommended to put that on a DC board with a 3.3 v GDROM (works but behaves strangely, tested)
5v GD-ROM fine work on 3v3 board, 3v3 GD-ROM fine work on 5v board
GD-ROM use ATA controller from PC CD-ROM and compatibily with both voltages
Wells screw holes do not match, is true indeed that most of CD DRIVES of the era are compatible both 5 and 3.3v.
I tested a 5v GD ROM on a 3,3 PAL BOARD...works but the drive spins "differently" and do not have the usual BEEP.
This is what i noticed.