28 Apr
2007
28 Apr
'07
8:43 p.m.
Anyone have Shugart 460VR / SA460 docs? Is a 460VR the same thing as
a SA460? The drive in my Intel iPDS says Model No. 460VR. Could it
be functionally replaced by an original IBM PC full height 5.25 drive?
The drive from the iPDS has jumpers on both DS1 and DS4 installed. I
wonder why that is?
28 Apr
28 Apr
9:31 p.m.
On 28 Apr 2007 at 20:43, Glen Slick wrote:
Anyone have Shugart 460VR / SA460 docs? Is a 460VR
the same thing as
a SA460? The drive in my Intel iPDS says Model No. 460VR. Could it
be functionally replaced by an original IBM PC full height 5.25 drive?
The drive from the iPDS has jumpers on both DS1 and DS4 installed. I
wonder why that is?
Herb Johnson has 460 OEM docs. From what I do remember, the 460 is a
96 tpi drive (720K), which means that you're not going to be able to
replace it with a FH SA450 (360K) drive.
Heaven only knows what the suffix means--could be a variation on the
face plate or could mean something like a head-load solenoid and/or
door lock. If you don't see evidence of either, try a plain old 720K
drive of any size (e.g. 3.5").
Cheers,
Chuck
10:33 p.m.
On 4/28/07, Chuck Guzis <cclist at sydex.com> wrote:
Herb Johnson has 460 OEM docs. From what I do remember, the 460 is a
96 tpi drive (720K), which means that you're not going to be able to
replace it with a FH SA450 (360K) drive.
Sure enough, the iPDS User's Guide lists the describes the format as:
Tracks/Disk 80
Sectors/Track 32 (16 on side 0, 16 on side 1)
Sectors/Disk 2560
Bytes/Sector 256
Bytes/Disk 655,360
TPI 96
11:46 p.m.
On 28 Apr 2007 at 22:33, Glen Slick wrote:
Sure enough, the iPDS User's Guide lists the
describes the format as:
Tracks/Disk 80
I'm looking at the iPDS prints on Bitsavers and it looks as if a head
load signal is asserted on pin 4 of J3, so I wonder if your -RV drive
has a head-load solenoid. Motor on is supplied through an 8255A and
the prints show 2 and 34 on J3 to be NC, so you don't need to provide
a "ready" signal.
In any case, a plain old 5.25" 720K drive should work just fine.
Cheers,
Chuck
29 Apr
29 Apr
12:33 a.m.
New subject: TX-8 TXi-16
Hi all
Last week I got a message from one of the list members, asking for the
software I have for the mentioned Pertec adapters. I asked him to mail me a
week later, as I was out of town, so I wouldnt forget it.
So, could you please mail me again ?
Nico
4:24 a.m.
Anyone have Shugart 460VR / SA460 docs? Is a 460VR
the same thing as
a SA460? The drive in my Intel iPDS says Model No. 460VR. Could it
be functionally replaced by an original IBM PC full height 5.25 drive?
The drive from the iPDS has jumpers on both DS1 and DS4 installed. I
wonder why that is?
I don't know what the "VR" means, but an SA460 is a 80 track (96tpi)
drive - you won't be able to replace it with a PC 48 tpi drive (normally
a SA-450 or TM-100-2) - you will need something like an SA-450 or a
TM-100-4 (both full height), or Teac FD-55F (1/2 height).
These drives can be tougher to find than 48 tpi drives - If you don't
turn one up you can modify many PC/AT HD drives to opperate as an 80
track DD drive - you need to switch the speed to 300rpm (I've got info
on my site about doing this), and make sure the density select is tied
off for "low density".
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
9:30 a.m.
On 4/29/07, Dave Dunfield <dave06a at dunfield.com> wrote:
I don't know what the "VR" means, but an SA460 is a 80 track (96tpi)
drive - you won't be able to replace it with a PC 48 tpi drive (normally
a SA-450 or TM-100-2) - you will need something like an SA-450 or a
TM-100-4 (both full height), or Teac FD-55F (1/2 height).
These drives can be tougher to find than 48 tpi drives - If you don't
turn one up you can modify many PC/AT HD drives to opperate as an 80
track DD drive - you need to switch the speed to 300rpm (I've got info
on my site about doing this), and make sure the density select is tied
off for "low density".
Next time I'm at one of the local PC recycle stores I'll see if I can
pickup up some cheap 1.2MB drives and try the 360->300 conversion.
That's probably easier than trying to find good working FH or HH 720KB
5.25 drives without paying too much.
-Glen
6228
days inactive
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6 comments
4 participants
participants (4)
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cclist＠sydex.com -
dave06a＠dunfield.com -
glen.slick＠gmail.com -
nico＠farumdata.dk