25 Feb
1998
25 Feb
'98
8:02 a.m.
Hi Marty,
I have one of the double-density models and can provide you with
copies of docs and some software. I have a bunch of application
software but it's in quad-density format for the Advantage and I
haven't bothered to transfer any of it to the Horizon.
The Horizon is a terrific, solid machine. The first serial port
is for the console and the second port is available for a printer,
etc. Both are easily reconfigured via the USER.ASM code (at least
my Lifeboat CP/M version). Two parallel ports are also available
on the motherboard.
I'm not sure if the Horizon bus is fully IEEE-696 compliant. Tim or
Allison?
BTW, California Digital (www.cadigital.com) sells hard-sectored
disks for around $10/box. They also have 8" SSDD floppies (ran
out of double-sided, unfortunately).
Regards,
Jason Brady jrbrady(a)mindspring.com Seattle, WA
25 Feb
25 Feb
8:14 a.m.
Jason Brady wrote:
snip
BTW, California Digital (www.cadigital.com) sells
hard-sectored
disks for around $10/box. They also have 8" SSDD floppies (ran
out of double-sided, unfortunately).
Regards,
Jason Brady jrbrady(a)mindspring.com Seattle, WA
Since the difference between single sided, and double sided, is quite
often just whether or not it was tested and passed the test as double
sided, buy the SS disks, and try them.
There was a big discussion of this in the 'hobby' press many years ago.
What it boiled down to, was that nobody changed the 'stock material'
that was fed through the 'punch press' for making the floppies. It was
all a matter of what they needed to ship, as to how the stuff was
tested.
Chuck
--
-----------------------------------------------------------
He, who will not reason, is a bigot; William Drumond,
he, who cannot, is a fool; Scottish writer
and he, who dares not, is a slave. (1585-1649)
While he that does, is a free man! Joseph P. 1955-
-----------------------------------------------------------
(be sure to correct the return address when using 'reply')
Chuck Davis / Sutherlin Industries FAX # (804) 799-0940
1973 Reeves Mill Road E-Mail -- cad(a)gamewood.net
Sutherlin, Virginia 24594 Voice # (804) 799-5803
6:09 p.m.
Charles A. Davis wrote:
Jason Brady wrote:
snip
No, unlike 5.25", you can't just use an 8" single-sided disk as a
double-sided. The sector detect hole is in a different place and a
double-sided drive will treat a single-sided disk as a single-sided
disk. You'd have to punch holes in the case, plus cover up the old
holes -- I'd suggest not using sticky tape.
--
Ward Griffiths
Dylan: How many years must some people exist,
before they're allowed to be free?
WDG3rd: If they "must" exist until they're "allowed",
they'll never be free.
BTW, California Digital (www.cadigital.com) sells
hard-sectored
disks for around $10/box. They also have 8" SSDD floppies (ran
out of double-sided, unfortunately).
Regards,
Jason Brady jrbrady(a)mindspring.com Seattle, WA
Since the difference between single sided, and double sided, is quite
often just whether or not it was tested and passed the test as double
sided, buy the SS disks, and try them.
There was a big discussion of this in the 'hobby' press many years ago.
What it boiled down to, was that nobody changed the 'stock material'
that was fed through the 'punch press' for making the floppies. It was
all a matter of what they needed to ship, as to how the stuff was
tested. 
26 Feb
26 Feb
7:40 a.m.
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28 Feb
28 Feb
5:04 a.m.
Tony Duell wrote:
Set the box on the window sill, line up the laser, ...
--
Ward Griffiths
Dylan: How many years must some people exist,
before they're allowed to be free?
WDG3rd: If they "must" exist until they're "allowed",
they'll never be free.
No, unlike 5.25", you can't just use an
8" single-sided disk as a
double-sided. The sector detect hole is in a different place and a
double-sided drive will treat a single-sided disk as a single-sided
disk. You'd have to punch holes in the case, plus cover up the old
holes -- I'd suggest not using sticky tape.
Or of course modify the drive electronics to allow _you_ to control the
2-sided output. It's not hard to do on the SA850 series given the
schematics/service manual.
What is even more anoying is that you can't use a double-sided 8" floppy
in a single-sided drive. The index sensor is in the wrong place, you see.
And punching extra holes in a few boxes-worth of disks is not my idea of
a fun afternoon :-(.
5:40 a.m.
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1 Mar
1 Mar
8:31 a.m.
On Sat, 28 Feb 1998 19:40:18 +0000 (GMT), you said:
Alas not - you don't want to make extra index holes in the disk itself -
only in the jacket. For the same reason you can't make a pile of the
disks and drill/punch a hole through the lot
Slightly more complex, but possible; you just line up the index holes
and zap the jackets. (Implementation is up to the reader)
_______________
Barry Peterson bmpete(a)swbell.net
Husband to Diane, Father to Doug,
Grandfather to Zoe and Tegan.
What is even more anoying is that you can't use a
double-sided 8" floppy
in a single-sided drive. The index sensor is in the wrong place, you see.
And punching extra holes in a few boxes-worth of disks is not my idea of
a fun afternoon :-(.
Set the box on the window sill, line up the laser, ... 
9:20 a.m.
On Sun, 1 Mar 1998, Barry Peterson wrote:
On Sat, 28 Feb 1998 19:40:18 +0000 (GMT), you said:
Alas not - you don't want to make extra index holes in the disk itself -
only in the jacket. For the same reason you can't make a pile of the
disks and drill/punch a hole through the lot
Slightly more complex, but possible; you just line up the index holes
and zap the jackets. (Implementation is up to the reader)
Still not good as the hole in the jacket needs to be rather larger than
the hole in the disk itself.
- don
What is even more anoying is that you can't use a
double-sided 8" floppy
in a single-sided drive. The index sensor is in the wrong place, you see.
And punching extra holes in a few boxes-worth of disks is not my idea of
a fun afternoon :-(.
Set the box on the window sill, line up the laser, ... _______________
Barry Peterson bmpete(a)swbell.net
Husband to Diane, Father to Doug,
Grandfather to Zoe and Tegan.
donm(a)cts.com
*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
Don Maslin - Keeper of the Dina-SIG CP/M System Disk Archives
Chairman, Dina-SIG of the San Diego Computer Society
Clinging tenaciously to the trailing edge of technology.
Sysop - Elephant's Graveyard (CP/M) - 619-454-8412
*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*
see old system support at http://www.psyber.com/~tcj
visit the "Unofficial" CP/M Weg site at http://cdl.uta.edu/cpm
9:24 a.m.
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9797
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8 comments
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participants (6)
-
ard＠p850ug1.demon.co.uk -
bmpete＠swbell.net -
cad＠gamewood.net -
donm＠cts.com -
gram＠cnct.com -
jrbrady＠mindspring.com