1 Aug
2007
1 Aug
'07
1:42 p.m.
I've unearthed a Xerox 820-II, the original boot disk to which has gone
bad. Is there someone here who can create a copy of the original 8" boot
disk and whatever else was shipped with the Xerox 820-II? I have blanks,
but no means to write to them.
--
David Griffith
dgriffi at cs.csubak.edu
A: Because it fouls the order in which people normally read text.
Q: Why is top-posting such a bad thing?
A: Top-posting.
Q: What is the most annoying thing in e-mail?
1 Aug
1 Aug
3:13 p.m.
I've unearthed a Xerox 820-II, the original boot
disk to which has gone
bad. Is there someone here who can create a copy of the original 8" boot
disk and whatever else was shipped with the Xerox 820-II? I have blanks,
but no means to write to them.
I have the 820-II boot disk up on my site in ImageDisk format.
I have directions on my site to make an adapter which should let
you connect one of the 8" drives to a 5.25" cable on a PC (don't
bother with the 820-II harness - just open up the disk box and
connect directly to the 50-pin connector on one of the drives).
Another option might be to write the boot disk to a 5.25" HD
diskette, then connect that in place of the A: drive (again
you will need an adapter), boot from it and copy to an 8"
disk in the B: drive.
Dave
--
dave06a (at) Dave Dunfield
dunfield (dot) Firmware development services & tools: www.dunfield.com
com Collector of vintage computing equipment:
http://www.classiccmp.org/dunfield/index.html
2 Aug
2 Aug
4:24 p.m.
On Wed, 1 Aug 2007, Dave Dunfield wrote:
I was hoping to find someone who has already done this since I barely have
the room to do so.
--
David Griffith
dgriffi at cs.csubak.edu
A: Because it fouls the order in which people normally read text.
Q: Why is top-posting such a bad thing?
A: Top-posting.
Q: What is the most annoying thing in e-mail?
I've
unearthed a Xerox 820-II, the original boot disk to which has gone
bad. Is there someone here who can create a copy of the original 8" boot
disk and whatever else was shipped with the Xerox 820-II? I have blanks,
but no means to write to them.
I have the 820-II boot disk up on my site in ImageDisk format.
I have directions on my site to make an adapter which should let
you connect one of the 8" drives to a 5.25" cable on a PC (don't
bother with the 820-II harness - just open up the disk box and
connect directly to the 50-pin connector on one of the drives).
Another option might be to write the boot disk to a 5.25" HD
diskette, then connect that in place of the A: drive (again
you will need an adapter), boot from it and copy to an 8"
disk in the B: drive.
3 Aug
3 Aug
4:30 a.m.
> I have directions on my site to make an adapter
which should let
> you connect one of the 8" drives to a 5.25" cable on a PC (don't
> bother with the 820-II harness - just open up the disk box and
> connect directly to the 50-pin connector on one of the drives).
I was hoping to find someone who has already done this
since I barely have
the room to do so.
You shouldn't need a lot of additional space. The adapter consists of a
50-pin edge card connector (you can make this from a cut-down ISA connector
if you need), and the 34-pin connector salvaged from an old 5.25" drive
PCB. If your PC doesn't have one, you will also need a PC floppy cable
with a 5.25" drive connector. If you prefer, you could make the adapter
using a pin-header and connect directly to a 3.5" floppy cable.
You already have the 8" drives in an enclosure with power supply. You
pop the cover off, sit your PC beside it with it's cover off, and run
the floppy cable from the PC to one of the 8" drives.
Trickiest part is iirc the 820 has single-density on the system tracks
and many PCs can't do that.
Depending on where you are located, there may be someone nearby with an
8" <> PC setup who can make you the disk. (Where are you?)
Dave
--
dave06a (at) Dave Dunfield
dunfield (dot) Firmware development services & tools: www.dunfield.com
com Collector of vintage computing equipment:
http://www.classiccmp.org/dunfield/index.html
10:23 a.m.
On Fri, 3 Aug 2007, Dave Dunfield wrote:
Bakersfield (southern California)
--
David Griffith
dgriffi at cs.csubak.edu
A: Because it fouls the order in which people normally read text.
Q: Why is top-posting such a bad thing?
A: Top-posting.
Q: What is the most annoying thing in e-mail?
I was hoping
to find someone who has already done this since I barely have
the room to do so.
You shouldn't need a lot of additional space. The adapter consists of a
50-pin edge card connector (you can make this from a cut-down ISA connector
if you need), and the 34-pin connector salvaged from an old 5.25" drive
PCB. If your PC doesn't have one, you will also need a PC floppy cable
with a 5.25" drive connector. If you prefer, you could make the adapter
using a pin-header and connect directly to a 3.5" floppy cable.
You already have the 8" drives in an enclosure with power supply. You
pop the cover off, sit your PC beside it with it's cover off, and run
the floppy cable from the PC to one of the 8" drives.
Trickiest part is iirc the 820 has single-density on the system tracks
and many PCs can't do that.
Depending on where you are located, there may be someone nearby with an
8" <> PC setup who can make you the disk. (Where are you?) 
6 Oct
6 Oct
5:44 p.m.
Dave Dunfield wrote:
You shouldn't need a lot of additional space. The
adapter consists of a
50-pin edge card connector (you can make this from a cut-down ISA connector
if you need), and the 34-pin connector salvaged from an old 5.25" drive
PCB. If your PC doesn't have one, you will also need a PC floppy cable
with a 5.25" drive connector. If you prefer, you could make the adapter
using a pin-header and connect directly to a 3.5" floppy cable.
You already have the 8" drives in an enclosure with power supply. You
pop the cover off, sit your PC beside it with it's cover off, and run
the floppy cable from the PC to one of the 8" drives.
Trickiest part is iirc the 820 has single-density on the system tracks
and many PCs can't do that.
Depending on where you are located, there may be someone nearby with an
8" <> PC setup who can make you the disk. (Where are you?)
Hi Dave, I'm also interesting in doing this, but for a Star, not an
820. I looked around on your site, but didn't see where the docs for
making this interface are.
Also, would you know if your interface would work with reading Xerox
Star 8" floppies from a PC?
6:52 p.m.
Dave Dunfield wrote:
> You shouldn't need a lot of additional space. The adapter consists of a
> 50-pin edge card connector (you can make this from a cut-down ISA connector
> if you need), and the 34-pin connector salvaged from an old 5.25" drive
> PCB. If your PC doesn't have one, you will also need a PC floppy cable
> with a 5.25" drive connector. If you prefer, you could make the adapter
> using a pin-header and connect directly to a 3.5" floppy cable.
>
> You already have the 8" drives in an enclosure with power supply. You
> pop the cover off, sit your PC beside it with it's cover off, and run
> the floppy cable from the PC to one of the 8" drives.
>
> Trickiest part is iirc the 820 has single-density on the system tracks
> and many PCs can't do that.
>
> Depending on where you are located, there may be someone nearby with an
> 8" <> PC setup who can make you the disk. (Where are you?)
Hi Dave, I'm also interesting in doing this, but
for a Star, not an
820. I looked around on your site, but didn't see where the docs for
making this interface are.
Near the bottom of the main page is a link called "Disk/Software images"
(or something like that) - on that page you will find links to the docs
I mentioned re: connecting an 8" drive.
Also, would you know if your interface would work with
reading Xerox
Star 8" floppies from a PC?
Not familier with the star, however as long as it's IBM format soft sector
(like the 820/820-II) it should work.
Dave
--
dave06a (at) Dave Dunfield
dunfield (dot) Firmware development services & tools: www.dunfield.com
com Collector of vintage computing equipment:
http://www.classiccmp.org/dunfield/index.html
6047
days inactive
6114
days old
6 comments
3 participants
participants (3)
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dave06a＠dunfield.com -
dgriffi＠cs.csubak.edu -
ray＠arachelian.com