On 11/24/16 7:34 AM, dwight wrote:
> I have a loose WD1000 someplace that I was going to use as for spare parts,
> for the trs80 board I'm using.
take a look at the pictures of the boards on bitsavers to see if they've
already been dumped
they are bipolar, 24 pin .6 are 82s181 .3 are 82s147
ct. I later bought the WD1000 board as insurance.
Dwight
From: cctalk on behalf of jos
Sent: Wednesday, November 23, 2016 10:37:14 AM
To: General Discussion: On-Topic and Off-Topic Posts
Subject: Re: Reverse-engineering WD1000, WD1001 hard disk controller
On 23.11.2016 19:30, Al Kossow wrote:
On 11/23/16 3:46 AM, jos wrote:
I added a pic of a wd1001-85 and prom contents on ftp://ftp.dreesen.ch/WD1001
what system was this from ?
No idea...
Bought from a fellow collector as a a loose PCB.
It was set up for SA1000 disks, not MFM.
Jos
On 11/23/16 3:46 AM, jos wrote:
> I added a pic of a wd1001-85 and prom contents on ftp://ftp.dreesen.ch/WD1001
>
what system was this from ?
On 23.11.2016 01:03, Eric Smith wrote:
On Tue, Nov 22, 2016 at 9:14 AM, jos wrote:
The MFM disk controller for later version Lilith's is clearly based on a
WD1001-05.
But uses a 8x305 iso 8x300.
All of the WD1001 controllers I've seen use 8X305. Some later WD1000 use
8X305 also. I've disas
On Tue, Nov 22, 2016 at 9:14 AM, jos wrote:
> The MFM disk controller for later version Lilith's is clearly based on a
> WD1001-05.
> But uses a 8x305 iso 8x300.
>
All of the WD1001 controllers I've seen use 8X305. Some later WD1000 use
8X305 also. I've disassembled the firmware of one WD1001-
On 20.11.2016 01:30, Al Kossow wrote:
On 11/19/16 4:25 PM, dwight wrote:
It is actually a controller for a TRS-80 but it was a WD1000 in disguise.
what format board (5" or 8")? 8X300 or 305?
I dumped and took pictures of a couple different styles which are up on
bitsavers under westernDigital
I've put my work in progress on reverse-engineering the original WD1000
firmware on github:
https://github.com/brouhaha/wd100x
I use my own assembler syntax output by my previously mentioned s8x30x
disassembler, so at the present there is no assembler for it. I expect to
have an assembler in the
ssiccmp.org] On Behalf Of dwight
> Sent: Sunday, November 20, 2016 1:07 AM
> To: General Discussion: On-Topic and Off-Topic Posts
> Subject: Re: Reverse-engineering WD1000, WD1001 hard disk controllers
>
> I suspect Kip had a WD1002. It would have had a BIOS PROM on it. I used
one of t
k [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Eric Smith
> Sent: Sunday, November 20, 2016 12:20 AM
> To: General Discussion: On-Topic and Off-Topic Posts
> Subject: Re: Reverse-engineering WD1000, WD1001 hard disk controllers
>
> On Sat, Nov 19, 2016 at 6:20 PM, Kip Koon wrote:
&
urday, November 19, 2016 9:31:22 PM
To: cctalk@classiccmp.org
Subject: Re: Reverse-engineering WD1000, WD1001 hard disk controllers
On 11/19/2016 5:06 PM, Eric Smith wrote:
> I've been working a little bit off-and-on for years on reverse-engineering
> the WD1000 and WD1001 disk controll
On 11/19/2016 5:06 PM, Eric Smith wrote:
I've been working a little bit off-and-on for years on reverse-engineering
the WD1000 and WD1001 disk controllers (8X300/8X305-based), and their
clones.
I have a hard disk controller for my Heath H100 that uses the 8x300.
I didn't realize how common tha
On Sat, Nov 19, 2016 at 6:20 PM, Kip Koon wrote:
> When you have a stable version, please let me know.
I'll try to remember to post an update here.
I would be interested in seeing the disassembled source code for the
> WD1000 8-bit card I modified years ago.
> I had an MFM hard drive or two
Hi Eric,
Your Disassembler sounds very interesting. When you have a stable version,
please let me know. I would be interested in seeing the disassembled source
code for the WD1000 8-bit card I modified years ago.
I had an MFM hard drive or two that I was trying to format, but the 4 sets of
h
Reverse-engineering WD1000, WD1001 hard disk controllers
On Sat, Nov 19, 2016 at 5:25 PM, dwight wrote:
> Do they have operations based on the address that the 8x300 is executing,
> like a typical bit slice?
>
They have two 8-bit PROMs to provide the 16-bit instruction word to the
8X3
On Sat, Nov 19, 2016 at 5:25 PM, dwight wrote:
> Do they have operations based on the address that the 8x300 is executing,
> like a typical bit slice?
>
They have two 8-bit PROMs to provide the 16-bit instruction word to the
8X300, and a third 8-bit PROM to provide "fast I/O select", which is
de
On 11/19/16 4:25 PM, dwight wrote:
It is actually a controller for a TRS-80 but it was a WD1000 in disguise.
what format board (5" or 8")? 8X300 or 305?
I dumped and took pictures of a couple different styles which are up on
bitsavers under westernDigital
would be interesting to find a 305 var
Do they have operations based on the address that the 8x300 is executing, like
a typical bit slice?
I used a WD1000 based controller on my Olivetti M20. It is actually a
controller for a TRS-80 but it was a WD1000 in disguise. The M20 had what
looked to be a wd1000 in the schematic I'd found.
On 11/19/16 4:06 PM, Eric Smith wrote:
> I've been working a little bit off-and-on for years on reverse-engineering
> the WD1000 and WD1001 disk controllers (8X300/8X305-based), and their
> clones.
there were a lot of them, looking around my office I see:
Davong
Liberty Bay / Codata (multibus
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