xy753 query

[aco at TAURUS.BITNET]

I understand from reading sun-spots that some people are running the
Xylogics 753 with no problems. I have a few questions though: Do Xylogics
supply a device driver for both SunOs 3.X and 4.0?  Does the device driver
supplied by Sun with SunOs 4.0 (/dev/xd) work with this controller (I
guess it doesn't...) Does anybody have experience with the xy753 on SunOs
4.0?  Is it worth upgrading to Xylogics 753 with 3MB/sec disks or is the
improvement small compared to 451 with 2.4 MB/sec disks?  Does the
restriction of 'only one disk type on one controller' apply to the 753 or
only to the Sun SMD4?  Has anybody installed the CDC 1.2 GB disk on the
753?

Thank you
Ariel Cohen
CS-Lab
Tel-Aviv University