Allison J Parent writes:
[...]
> Ok, here goes.  The only difference between the 3100m76 and the vs2000
> scsi is 0/zip/nada/zero!  They both use the NCR5380 chip to drive the 
> SCSI bus and whats on the other side is a vax.  Now the NCR5380 is a 
> programatically poor SCSI chip as it was designed back in '83ish, I've 
> designed a few into z80 CP/M crates back around '85 and hated it.  It a 
> good SCSI bus driver but but writing a driver to make it adhere to scsi 
> bus protocal is a royale pain.  Don't forget, SCSI is the bus level 
> protocal and what's said over the bus can be anything in the way of 
> higher protocal just like eithernet.

I'm not at all a hardware guy but seeing things from the software side.
I also don't know where SCSI ends and where vax starts, but:

The 5380 is the same, but the drivers for 2000 and 3100/76 are a little
bit different since DMA is handled different on both machines.

Ciao,
	bertram