25 Mar
2000
25 Mar
'00
9:14 a.m.
Does anyone know of any parallel port hard drives that will work with with
my Sharp PC-7000? I only ask because, for some odd reason, whenever I copy a
DOS program to a floppy (360K) in Windows, it does not want to work on the
Sharp, but works flawlessly on the Windows box (in a DOS window, of
course!). What could be happening? Is there something obvious that I'm not
doing right?
____________________________________________________________
David Vohs, Digital Archaeologist & Computer Historian.
Computer Collection:
"Triumph": Commodore 64C, 1802, 1541, FSD-1, GeoRAM 512, Okimate 20.
"Leela": Macintosh 128 (Plus upgrade), Nova SCSI HDD, Imagewriter II.
"Delorean": TI-99/4A.
"Monolith": Apple Macintosh Portable.
"Spectrum": Tandy Color Computer 3.
"Boombox": Sharp PC-7000.
____________________________________________________________
______________________________________________________
Get Your Private, Free Email at http://www.hotmail.com
25 Mar
25 Mar
12:19 p.m.
Does anyone know of any parallel port hard drives that
will work with with
my Sharp PC-7000? I only ask because, for some odd reason, whenever I copy a
DOS program to a floppy (360K) in Windows, it does not want to work on the
Sharp, but works flawlessly on the Windows box (in a DOS window, of
course!). What could be happening? Is there something obvious that I'm not
doing right?
What I bought was an Adaptec Parallel to SCSI adapter, slow but works
pretty well.
1:38 p.m.
New subject: Drives on PDP-11
I have a full backup of the drive via COPY. I would like to graft a
different hard disk onto this machine.
I have available in ST506-type is a fujitsu 40mb and a seagate st4096.
How do connect the second drive? There are connections for a second
drive but both are on the machine and not with the 34 pin connector
daisy-chained to the first drive as is normal. Do I terminate each drive
in this "Y" configuration? What drive number should it be? Drive 4 I
suspect as the first and only hard disk is set at 3 and is terminated.
How would I configure drive geometry to match the drive I am installing?
The object of installing a second hard disk is to create a bootable clone
of the first one. A bump in disk space is allways cool but I want a
bootable clone as a backup at least.
Does the ST506-type controller have enough Shugart SA400 about it that it
is running the floppies as drive id's 1 and 2? It would explain a lot.
How difficult is it to substitute a standard double-sided floppy mech for
the wierd but nifty-looking floppy drives that are in it now? For those
of you still wondering, it has an RX50-AA double-drive unit that cannot be
formatted by the computer but can be read.
Will I be able to format media on the machine if I DO replace the drives?
Can I substitute a standared 40trk X DS X DD mechanism or an 1.2mb 5.25"
mech to accomplish this? The connections look standard though I have not
opened the base enclosure for the floppy mechanism for a look at it's
cabling yet.
Thanks all
--
-----------------------------------------------------------
Jeffrey S. Worley
Technical Services
Bits & Bytes Computer Services Inc.
1979B Hendersonville Road
Asheville, NC 28803
828-684-8953 - voice 0900-1700 five days
828-687-9284 - 24hr fax
Who is General Failure and why is he reading my hard disk?
Technoid(a)Cheta.net
-----------------------------------------------------------
2:33 p.m.
New subject: Drives on PDP-11
I have a full backup of the drive via COPY. I would
like to graft a
different hard disk onto this machine.
Did you simply do a COPY? Or a COPY/SYS?
I have available in ST506-type is a fujitsu 40mb and a
seagate st4096.
How do connect the second drive? There are connections for a second
Since you've got a RD52, which is a good drive your best bet is to try and
find a 3rd party ESDI controller if you really want to add different Hard
Drives. I'm not even sure that you can munge a non-DEC MFM disk into
working with what you've got. Besides I try to avoid MFM HD's if at all
possible.
How difficult is it to substitute a standard
double-sided floppy mech for
the wierd but nifty-looking floppy drives that are in it now? For those
of you still wondering, it has an RX50-AA double-drive unit that cannot be
formatted by the computer but can be read.
As I recall, you've got either a RQDX1 or RQDX2 drive controller, so you're
pretty much out of luck there.
With the correct revision of RQDX3 it is possible to convert certain Teac
1.2MB Floppy drives into RX33's.
Zane
| Zane H. Healy | UNIX Systems Adminstrator |
| healyzh(a)aracnet.com (primary) | Linux Enthusiast |
| healyzh(a)holonet.net (alternate) | Classic Computer Collector |
+----------------------------------+----------------------------+
| Empire of the Petal Throne and Traveller Role Playing, |
| and Zane's Computer Museum. |
| http://www.aracnet.com/~healyzh/ |
2:57 p.m.
It may be quite implementation sensitive, but I've got an older APA348 (the
latest is the '358) and a Belkin adapter, (they only make one) and the
BELKIN outperforms the ADAPTEC by quite a bit. I get about 960 KB/sec on a
drive that does about that well on an ADAPTEC AHA1460 PC-Card adapter on
this notebook. The Adaptec 348, by comparison, yields a max of about
220KB/sec, and the '358 seems to max out at about 160. This is on a cheapo
WINBOOK XL with 32MB ram and the small (2GB) HDD. I have to believe they'd
do better elsewhere, though I've not tested it. I've tried the '348 and
found it capable of about 200 nearly anywhere so long as the attached device
is that fast.
Dick
----- Original Message -----
From: Mike Ford <mikeford(a)socal.rr.com>
To: <classiccmp(a)classiccmp.org>
Sent: Saturday, March 25, 2000 4:19 PM
Subject: Re: Parallel port hard drives?
>Does anyone know of any parallel port hard drives
that will work with
with
>my Sharp PC-7000? I only ask because, for some odd
reason, whenever I
copy a
>DOS program to a floppy (360K) in Windows, it does
not want to work on
the
>Sharp, but works flawlessly on the Windows box (in
a DOS window, of
>course!). What could be happening? Is there something obvious that I'm
not
doing right?
What I bought was an Adaptec Parallel to SCSI adapter, slow but works
pretty well.
4:14 p.m.
I use the 358 with an EPP parallel port and get over 500KB/s with an old
quantum 160meg drive. I tried one of the Belkins and finally returned it
since it had problems with most of my scsi devices. After spending hours
on tech support over a couple of weeks and even buying a separate ps to
provide termination power (their recommendation), I swapped it out with a
new one. Same problems...they couldn't figure out the problem and finally
RMA'd it. The Adaptec, while my least favorite scsi solution, at least
worked with my old HP Scanjet IIP...
On Sat, 25 Mar 2000, Richard Erlacher wrote:
It may be quite implementation sensitive, but I've
got an older APA348 (the
latest is the '358) and a Belkin adapter, (they only make one) and the
BELKIN outperforms the ADAPTEC by quite a bit. I get about 960 KB/sec on a
drive that does about that well on an ADAPTEC AHA1460 PC-Card adapter on
this notebook. The Adaptec 348, by comparison, yields a max of about
220KB/sec, and the '358 seems to max out at about 160. This is on a cheapo
WINBOOK XL with 32MB ram and the small (2GB) HDD. I have to believe they'd
do better elsewhere, though I've not tested it. I've tried the '348 and
found it capable of about 200 nearly anywhere so long as the attached device
is that fast.
Dick
----- Original Message -----
From: Mike Ford <mikeford(a)socal.rr.com>
To: <classiccmp(a)classiccmp.org>
Sent: Saturday, March 25, 2000 4:19 PM
Subject: Re: Parallel port hard drives?
>Does anyone know of any parallel port hard
drives that will work with
with
>my Sharp PC-7000? I only ask because, for
some odd reason, whenever I
copy a
>DOS program to a floppy (360K) in Windows, it
does not want to work on
the
>Sharp, but works flawlessly on the Windows
box (in a DOS window, of
>course!). What could be happening? Is there something obvious that I'm
not
doing
right?
What I bought was an Adaptec Parallel to SCSI adapter, slow but works
pretty well.
3:10 p.m.
It just occurred to me that the Mac-drive I just cleaned up and resealed in
its case would be a candidate for the sort of thing it seems you're wnating
to do. I have about half a dozen externally packaged SCSI drives of various
sizes which I use for that purpose. These range in size from the little
80-meg MAC drive to a 2GB Micropolis I have had for about 7 years. They've
seldom given me cause to 'cuss 'em and tend to make installations of things
you might be inclined to use a CD to install quite painless and easy to
repeat. I started doing that the week I bought my AHA348 for $1.50 at the
thrift store. This incredible bargain moved me to seek a practical
application.
Dick
----- Original Message -----
From: Mike Ford <mikeford(a)socal.rr.com>
To: <classiccmp(a)classiccmp.org>
Sent: Saturday, March 25, 2000 4:19 PM
Subject: Re: Parallel port hard drives?
>Does anyone know of any parallel port hard drives
that will work with
with
>my Sharp PC-7000? I only ask because, for some odd
reason, whenever I
copy a
>DOS program to a floppy (360K) in Windows, it does
not want to work on
the
>Sharp, but works flawlessly on the Windows box (in
a DOS window, of
>course!). What could be happening? Is there something obvious that I'm
not
doing right?
What I bought was an Adaptec Parallel to SCSI adapter, slow but works
pretty well.
2:43 p.m.
Perhaps you could consider one of those parallel port adapters to SCSI.
I've got a couple of them and have never had cause to cuss them.
Consider the Belkin version before you consider the Adaptec. I've had much
better performance with the BELKIN. They are both outrageously overpriced,
but you know how it is. . .
Dick
----- Original Message -----
From: David Vohs <netsurfer_x1(a)hotmail.com>
To: <classiccmp(a)classiccmp.org>
Sent: Saturday, March 25, 2000 1:14 PM
Subject: Parallel port hard drives?
Does anyone know of any parallel port hard drives that
will work with with
my Sharp PC-7000? I only ask because, for some odd reason, whenever I copy
a
DOS program to a floppy (360K) in Windows, it does not
want to work on the
Sharp, but works flawlessly on the Windows box (in a DOS window, of
course!). What could be happening? Is there something obvious that I'm not
doing right?
____________________________________________________________
David Vohs, Digital Archaeologist & Computer Historian.
Computer Collection:
"Triumph": Commodore 64C, 1802, 1541, FSD-1, GeoRAM 512, Okimate 20.
"Leela": Macintosh 128 (Plus upgrade), Nova SCSI HDD, Imagewriter II.
"Delorean": TI-99/4A.
"Monolith": Apple Macintosh Portable.
"Spectrum": Tandy Color Computer 3.
"Boombox": Sharp PC-7000.
____________________________________________________________
______________________________________________________
Get Your Private, Free Email at http://www.hotmail.com
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days inactive
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7 comments
6 participants
participants (6)
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af-list＠wfi-inc.com -
edick＠idcomm.com -
healyzh＠aracnet.com -
mikeford＠socal.rr.com -
netsurfer_x1＠hotmail.com -
Technoid＠cheta.net