to the second port I attached an external Plextor
UltraPlex 32.
Does that drive support 512-byte block mode? If so, do you need to change a
DIP Switch? Many of the Plextor drives that support 512-byte blocks need a
switch set. Some older Toshiba CD-ROM drives also support 512-byte block
mode and will switch to it automatically when needed.
Unless your controller does something special to circumvent it, you need a
CD-ROM drive that supports 512-bytes per block mode. Hope this helps,
- Bob