<nitpick>
You mean 512-byte block size. The "standard" size is 2048
bytes, but some
Unix boxes require 512 bytes. Some SCSI CD-ROM drives (e.g.,
Plextor) have
a jumper setting for this. Some (e.g., Toshiba) have an
undocumented set
of solder pads that can be bridged for this.
</nitpick>
Take a look at the SUN CDROM faq as it tells you how to overcome the
512-byte block size so that you can hook up one of the "Standard" SCSI
CDROMs. I believe the faq is at
http://www.sunhelp.org
Ram