Here is the summary of TC SCSI adaptor features.

- PMAZ-A
	DS5000/200 builtin, or TC option card
	Slow/Narrow 5MB/s
	SCSI transaction is done via local SRAM by PIO

- DS5000/1xx,2xx,xx builtin
	ULTRIX sometimes calls it PMAZ-B, but hardware has no
	such TC ID string inside.
	SCSI transaction is done by IOASIC DMA
	Slow/Narrow 5MB/s
	performs moderately well

- TCDS
	DEC3000 builtin, or available as TC option cards

	300,400,500,700		Slow/Narrow     5MB/s 
	600,800,900		Fast/Narrow    10MB/s 
	PMAZB			Slow/Narrow     5MB/s 
	PMAZC			Fast/Narrow    10MB/s	

DU/Tru64 has support for Fast/Wide/Differential SCSI adaptor named
KZTSA.  It seems a variation of "SIMport" SCSI chip implemented for
TURBOchannel.  I have no further information of it.

Tohru Nishimura