🚀 go-pugleaf

In article <793234637snz@cdsl.demon.co.uk>
           peter@cdsl.demon.co.uk "Peter Hayward" writes:

>    This is really a question for Andrew but I though I would post it so
>    other people can answer (if they know anything) or read the replies
>    if they want to.
> 
>    Western digital made two versions of the WD7000.  One was designated
>    the WD7000 ASC and the other the WD7000 FASST.  My question is:-
>    What is the relationship between these two boards?  Are they the same
>    etch so that firmware for one will run in the other?  theref43 from
>    /simtel/msdos/info states that the ASC was an OEM version of the
>    FASST.  I'm suspicious of that answer.  It seems unlikely to me that
>    the OEM version of a pcb would have a seperate silk screen.  The
>    manufacturer would loose flexibilty in stocking two non-interchangeable
>    boards when he only needed one.  I suspect the ASC was simply an
>    earlier version of the FASST, but I don't know that.
> 
>    Does anybody?

Well, I'm afraid I don't know, but perhaps I can add a few more pieces
to the jigsaw puzzle.

I used the WD7000 FASST2 on SunSoft's Interactive Unix. In the manuals,
it refers to the controller mostly as "WD-7000ASC" and in one place as
"WD-7000ASC - FASST". The driver for it is called "wdasc". From this, I
would assume the ASC and FASST are equivalent at the software interface.

To add further confusion, mine is an FASST2, which might be different
from an FASST (without the 2). The FASST2 is a SCSI2 controller; if the
FASST (without the 2) exists, it might be a SCSI1 version, or maybe the
ASC is the SCSI1 version? Maybe the ROM upgrade is to convert?

I am aware of two other members of the family.
A summary of all three follow:

WD7000-FASST2   ISA full length card, floppy controller, DMA bus master
                with 5.3Mbyte/sec host transfer rate, 4.0Mbyte/sec SCSI
                synchronous transfer rate, full SCSI 1 & 2 command set.
                Linked SCSI commands. 64 logical drives. Z-80 on board.

WD7000-EX       EISA card. It also has a WD-7000ASC compatibility mode
                patchable on the board.
                [no further technical info]

WDATXT-FASST    8 bit card, about 1/3 full length, and has no floppy
                controller. I/O method configurable as one of: blind i/o
                (fastest), single byte programmed i/o, or DMA.
                650kbytes/sec host transfer rate. Only async SCSI
                transfers. Full SCSI 1 & 2 command set. Linked SCSI
                commands. 64 logical drives. Not supported under Unix.

-- 
Andrew Gabriel                        Home: Andrew@cucumber.demon.co.uk
Consultant Software Engineer          Work: Andrew.Gabriel@net-tel.co.uk