27 Aug
2003
27 Aug
'03
8:31 p.m.
I have dredged up my Atrona system and will try
to make some floppy copies for interested parties
soon.
I belive I have floppies to boot both the 8 bit
processor, and the 16 bit service processor into
MS/Dos 2.x (2.1 maybe).
I'll post again when I get the system tested and
running.
It uses standard 3 1/2" floppies (I think 720K,
again I'll have to post when I check it out).
Jim
28 Aug
28 Aug
8:48 p.m.
On Wed, 27 Aug 2003, jim stephens wrote:
I have dredged up my Atrona system and will try
to make some floppy copies for interested parties
soon.
I belive I have floppies to boot both the 8 bit
processor, and the 16 bit service processor into
MS/Dos 2.x (2.1 maybe).
I'll post again when I get the system tested and
running.
It uses standard 3 1/2" floppies (I think 720K,
again I'll have to post when I check it out).
That is unusual. If this is the original Attache',
the normal drive is a 5.25" 48tpi 2/3 high.
- don
Jim
9:08 p.m.
On Thu, 28 Aug 2003, Don Maslin wrote:
There was also a 720K 5.25" 96TPI (80 track per side) option.
--
Fred Cisin cisin(a)xenosoft.com
XenoSoft http://www.xenosoft.com
PO Box 1236 (510) 558-9366
Berkeley, CA 94701-1236
It uses
standard 3 1/2" floppies (I think 720K,
again I'll have to post when I check it out).
That is unusual. If this is the
original Attache',
the normal drive is a 5.25" 48tpi 2/3 high. 
29 Aug
29 Aug
9:16 a.m.
At 05:58 PM 8/28/03 -0700, you wrote:
On Thu, 28 Aug 2003, Don Maslin wrote:
There was also a 720K 5.25" 96TPI (80 track per side) option.
Do you know what you have to do to use the 96TPI drives in the Attache?
Joe
It uses
standard 3 1/2" floppies (I think 720K,
again I'll have to post when I check it out).
That is unusual. If this is the
original Attache',
the normal drive is a 5.25" 48tpi 2/3 high.
5:36 p.m.
On Thu, 28 Aug 2003, Joe wrote:
I don't know. But it was a supported option from Otrona.
It would require software changes: either be a different
boot (system) disk, different ROM, or both.
But, IIRC, the MS-DOS option involved a daughter board with
an 808x co-processor.
If you can find drives that will physically fit,
they'll hook up to the same cables and controller.
Canon made a really nice 2/3 height DOUBLE drive.
The guy who has 3.5" drives in his would need, or have,
exactly the same software changes. Except for connectors,
3.5" 720K drives would use the same software as 5.25" 720K drives,
and are almost impossible to differentiate in software.
There was also
a 720K 5.25" 96TPI (80 track per side) option.
Do you know what you have to
do to use the 96TPI drives in the Attache? 
7:12 p.m.
On Fri, 29 Aug 2003, Fred Cisin wrote:
On Thu, 28 Aug 2003, Joe wrote:
I don't know. But it was a supported option from Otrona.
It would require software changes: either be a different
boot (system) disk, different ROM, or both.
But, IIRC, the MS-DOS option involved a daughter board with
an 808x co-processor.
There are several references to 96 tpi drives/disks in the BIOS
source code and the FORMAT source. At a quick glance, it seems
that it might be possible to patch the ondisk binary.
- don
There was
also a 720K 5.25" 96TPI (80 track per side) option.
Do you know what you
have to do to use the 96TPI drives in the Attache? If you can find drives that will physically fit,
they'll hook up to the same cables and controller.
Canon made a really nice 2/3 height DOUBLE drive.
The guy who has 3.5" drives in his would need, or have,
exactly the same software changes. Except for connectors,
3.5" 720K drives would use the same software as 5.25" 720K drives,
and are almost impossible to differentiate in software.
7817
days inactive
7819
days old
6 comments
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participants (5)
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cisin＠xenosoft.com -
donm＠cts.com -
jwstephens_2000＠yahoo.com -
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rigdonj＠cfl.rr.com