29 Jul
2002
29 Jul
'02
12:24 p.m.
Does anyone have any spare WD-1000, WD-1001, or related disk controllers,
or documentation on them?
These are *not* ISA bus cards, they have a parallel interface to a host,
and control up to four 5.25-inch Winchester disk drives using the ST-506
or ST-412 interface. (Some models supported older 8-inch drives as well).
They use the Signetics 8X300 or 8X305 processor, WD-1100 series support
chips, and firmware in bipolar PROMs.
Thanks,
Eric
29 Jul
29 Jul
1:04 p.m.
I've got a SASI to ST-506 / SA400 controller, I think its 8X300 based,
but I'm unsure...
Eric Smith wrote:
Does anyone have any spare WD-1000, WD-1001, or related
disk controllers,
or documentation on them?
These are *not* ISA bus cards, they have a parallel interface to a host,
and control up to four 5.25-inch Winchester disk drives using the ST-506
or ST-412 interface. (Some models supported older 8-inch drives as well).
They use the Signetics 8X300 or 8X305 processor, WD-1100 series support
chips, and firmware in bipolar PROMs.
Thanks,
Eric
8:13 p.m.
--- Bob Shannon <bshannon(a)tiac.net> wrote:
I've got a SASI to ST-506 / SA400 controller, I
think its 8X300 based,
but I'm unsure...
Eric Smith wrote:
>Does anyone have any spare WD-1000, WD-1001, or related disk
>controllers, or documentation on them?
I think I have something much like that from a "Davong" external box I
picked up at Dayton some years ago - it was billed as "SCSI" and the
host connector *is* 50 pins, but it's nothing like SCSI and does have
an 8X300 chip on it.
I have no docs. Sorry. I was asking about mine some years ago and
got some interesting replies, but no concrete information.
-ethan
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9:08 p.m.
Bob Shannon <bshannon(a)tiac.net> wrote:
I've got a SASI to ST-506 / SA400 controller, I
think its 8X300 based,
but I'm unsure...
Yes, some SASI (and perhaps even SCSI) bridge boards did use the 8X300.
But the ones I'm looking for use the proprietary WD interface.
Ethan Dicks <erd_6502(a)yahoo.com> wrote:
I think I have something much like that from a
"Davong" external box I
picked up at Dayton some years ago - it was billed as "SCSI" and the
host connector *is* 50 pins, but it's nothing like SCSI and does have
an 8X300 chip on it.
Could well be.
I have no docs. Sorry. I was asking about mine some
years ago and got
some interesting replies, but no concrete information.
Looks like Al has the OEM manual for the original WD1000 already online:
http://www.spies.com/~aek/pdf/westernDigital/WD1000_OEMmanual.pdf
The later models added features like ECC and suport for 1K sectors, but
still used basically the same interface and command set.
If you're familiar with the ATA (IDE) interface, the WD1000 registers and
commands will seem quite familiar.
Anyone got the WD1001 OEM manual? Or spare boards of either type?
Back in the old days, I built my own host interface for the Apple ][.
Since the WD100x buffers a full sector, the data transfer does not
require DMA, so the interface card was very simple.
Best regards,
Eric
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3 comments
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participants (3)
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bshannon＠tiac.net -
erd_6502＠yahoo.com -
eric＠brouhaha.com