6 Apr
2001
6 Apr
'01
9:05 a.m.
On Apr 6, 18:12, John Honniball wrote:
Are you thinking of the Pertec magnetic tape
interface? I
have a Cifer front-loading half-inch magtape drive that
(I'm told) has the Pertec interface. It has two large
50-way ribbon cables coming out of the back.
So, much as I hate to say "Me Too", I'd also like to find
out more about the Pertec interface. Was there ever a PC
ISA-bus card for this? Or a VME (Sun-3) card?
I'm sure there are VME cards. Dunno about ISA.
I've posted the pinout for the 2 x 50-way interface on my website at
http://www.dunnington.u-net.com/public/pertec.ps. It's a PostScript file.
I can't remember where the information originally came from, it was either
an Emulex TC02 manual or the manual for my tape deck.
--
Pete Peter Turnbull
Network Manager
Dept. of Computer Science
University of York
3:27 p.m.
> I'm sure there are VME cards. Dunno about
ISA.
O.K. I was able to ID the thing I have.
With the AKSystems 9-track I was able to salvage
5 years ago was a "IBEX 101293-01" ISA half card.
It looks very simple with only a couple dozen low level
chips on it. No MCU certainly.
I could really use software if anyone's familliar & has it.
John A.
10:53 a.m.
> Are you thinking of the Pertec magnetic tape
interface? I
> have a Cifer front-loading half-inch magtape drive that
> (I'm told) has the Pertec interface. It has two large
> 50-way ribbon cables coming out of the back.
One of the people on another list was asking about a "early SCSI" cable
that used 2 x 50pin ribbon cables on a hard drive. Was there such a SCSI,
or is it likely he has a pertec drive?
11:18 a.m.
I've seen lots of PERTEC interfaces, each with two 50-pin cable connectors.
I've also seen quite a few SCSI open-reel drives, and they normally have only
one.
Dick
----- Original Message -----
From: "Mike Ford" <mikeford(a)socal.rr.com>
To: <classiccmp(a)classiccmp.org>
Sent: Friday, April 06, 2001 1:53 PM
Subject: Re: pertec interface
> Are you
thinking of the Pertec magnetic tape interface? I
> have a Cifer front-loading half-inch magtape drive that
> (I'm told) has the Pertec interface. It has two large
> 50-way ribbon cables coming out of the back.
One of the people on another list was asking about a "early SCSI" cable
that used 2 x 50pin ribbon cables on a hard drive. Was there such a SCSI,
or is it likely he has a pertec drive?
1:39 p.m.
A non-text attachment was scrubbed...
Name: not available
Type: text
Size: 642 bytes
Desc: not available
Url :
http://www.classiccmp.org/pipermail/cctalk/attachments/20010406/77300aa0/at…
2:36 p.m.
> One of the people on another list was asking about a "early SCSI" cable
> that used 2 x 50pin ribbon cables on a hard drive. Was there such a SCSI,
> or is it likely he has a pertec drive?
This sounds more like ESDI to me. If memory serves that was a two cable system.
RLL and MFM were too, now that I think about it, although not 50 pin cables.
I'm betting ESDI.
--
Jim Strickland
jim(a)DIESPAMMERSCUMcalico.litterbox.com
-----------------------------------------------------------------------
BeOS Powered!
-----------------------------------------------------------------------
3:06 p.m.
This sounds more like ESDI to me. If memory serves
that was a two
cable system.
RLL and MFM were too, now that I think about it, although not 50 pin cables.
I'm betting ESDI.
The only true ESDI system, not counting the IBM DBA interface
used in some of the PS/2 series, that I have here is in my MicroVAX
II and it had daul Maxtor XT-8380E's installed. Full height 5-1/4"
drives of 380meg each. I pulled one of them out to replace it with
the TK50. Anyway, the cables for the drives are the same width as
MFM/RLL drives: 34 and 20 pins. This is verified by comparing it
directly to a Tandon TM-502. Wasn't ESDI an outgrowth of the ST-506
drives/interface?
Jeff
--
Collector of Classic Microcomputers and Video Game Systems:
Home of the TRS-80 Model 2000 FAQ File
http://www.geocities.com/siliconvalley/lakes/6757
3:21 p.m.
ESDI uses a 34-conductor control cable, and a 20-conductor data cable, both
similar to what's used on ST506/412.
The only widely used interface I know of that actually uses TWO 50-conductor
cables is the Pertec controller/formatter interface.
Dick
----- Original Message -----
From: "Jeff Hellige" <jhellige(a)earthlink.net>
To: <classiccmp(a)classiccmp.org>
Sent: Friday, April 06, 2001 6:06 PM
Subject: Re: pertec interface
This sounds
more like ESDI to me. If memory serves that was a two
cable system.
RLL and MFM were too, now that I think about it, although not 50 pin cables.
I'm betting ESDI.
The only true ESDI system, not counting the IBM DBA interface
used in some of the PS/2 series, that I have here is in my MicroVAX
II and it had daul Maxtor XT-8380E's installed. Full height 5-1/4"
drives of 380meg each. I pulled one of them out to replace it with
the TK50. Anyway, the cables for the drives are the same width as
MFM/RLL drives: 34 and 20 pins. This is verified by comparing it
directly to a Tandon TM-502. Wasn't ESDI an outgrowth of the ST-506
drives/interface?
Jeff
--
Collector of Classic Microcomputers and Video Game Systems:
Home of the TRS-80 Model 2000 FAQ File
http://www.geocities.com/siliconvalley/lakes/6757
5:54 p.m.
IIRC, the 34 conductor control cable has (or may have) a twist
in it similiar to a floppy cable, but incompatible. I had a lot
of trouble with an ESDI drive that I could get to work. Oddly
enough, the floppy drives didn't work either :)
clint
On Fri, 6 Apr 2001, Richard Erlacher wrote:
ESDI uses a 34-conductor control cable, and a
20-conductor data cable, both
similar to what's used on ST506/412.
The only widely used interface I know of that actually uses TWO 50-conductor
cables is the Pertec controller/formatter interface.
Dick
----- Original Message -----
From: "Jeff Hellige" <jhellige(a)earthlink.net>
To: <classiccmp(a)classiccmp.org>
Sent: Friday, April 06, 2001 6:06 PM
Subject: Re: pertec interface
This
sounds more like ESDI to me. If memory serves that was a two
cable system.
RLL and MFM were too, now that I think about it, although not 50 pin cables.
I'm betting ESDI.
The only true ESDI system, not counting the IBM DBA interface
used in some of the PS/2 series, that I have here is in my MicroVAX
II and it had daul Maxtor XT-8380E's installed. Full height 5-1/4"
drives of 380meg each. I pulled one of them out to replace it with
the TK50. Anyway, the cables for the drives are the same width as
MFM/RLL drives: 34 and 20 pins. This is verified by comparing it
directly to a Tandon TM-502. Wasn't ESDI an outgrowth of the ST-506
drives/interface?
Jeff
--
Collector of Classic Microcomputers and Video Game Systems:
Home of the TRS-80 Model 2000 FAQ File
http://www.geocities.com/siliconvalley/lakes/6757
7:03 p.m.
On Fri, 6 Apr 2001, Clint Wolff (VAX collector) wrote:
IIRC, the 34 conductor control cable has (or may have) a twist
in it similiar to a floppy cable, but incompatible. I had a lot
of trouble with an ESDI drive that I could get to work. Oddly
enough, the floppy drives didn't work either :)
The twist better be like that for a hard disk or it will not
work. More and different leads and different side of the cable.
- don
clint
On Fri, 6 Apr 2001, Richard Erlacher wrote:
ESDI uses a 34-conductor control cable, and a
20-conductor data cable, both
similar to what's used on ST506/412.
The only widely used interface I know of that actually uses TWO 50-conductor
cables is the Pertec controller/formatter interface.
Dick
----- Original Message -----
From: "Jeff Hellige" <jhellige(a)earthlink.net>
To: <classiccmp(a)classiccmp.org>
Sent: Friday, April 06, 2001 6:06 PM
Subject: Re: pertec interface
This
sounds more like ESDI to me. If memory serves that was a two
cable system.
RLL and MFM were too, now that I think about it, although not 50 pin cables.
I'm betting ESDI.
The only true ESDI system, not counting the IBM DBA interface
used in some of the PS/2 series, that I have here is in my MicroVAX
II and it had daul Maxtor XT-8380E's installed. Full height 5-1/4"
drives of 380meg each. I pulled one of them out to replace it with
the TK50. Anyway, the cables for the drives are the same width as
MFM/RLL drives: 34 and 20 pins. This is verified by comparing it
directly to a Tandon TM-502. Wasn't ESDI an outgrowth of the ST-506
drives/interface?
Jeff
--
Collector of Classic Microcomputers and Video Game Systems:
Home of the TRS-80 Model 2000 FAQ File
http://www.geocities.com/siliconvalley/lakes/6757
7:29 p.m.
The twist in the various cables are not a standard feature, but, rather, an
IBM-ism cooked up to allow the drives to be jumpered identically, irrespective
of their physical unit number assignment, i.e. only on the basis of their
position on the cable. My esdi drives work fine on a PC without the twist and
in combination with a WD ESDI controller.
The twist is in a different position on the cable, and involves a different
number of wires, depending on whether it's a floppy or hard disk cable.
Of all the various drive types I've fooled with, the ESDI types seemed to work
with the least hassle and confusion of any, when put in the PC environment.
SCSI was the only type that even came close.
Dick
----- Original Message -----
From: "Clint Wolff (VAX collector)" <vaxman(a)qwest.net>
To: <classiccmp(a)classiccmp.org>
Sent: Friday, April 06, 2001 8:54 PM
Subject: Re: pertec interface
IIRC, the 34 conductor control cable has (or may have) a twist
in it similiar to a floppy cable, but incompatible. I had a lot
of trouble with an ESDI drive that I could get to work. Oddly
enough, the floppy drives didn't work either :)
clint
On Fri, 6 Apr 2001, Richard Erlacher wrote:
> ESDI uses a 34-conductor control cable, and a 20-conductor data cable, both
> similar to what's used on ST506/412.
>
> The only widely used interface I know of that actually uses TWO 50-conductor
> cables is the Pertec controller/formatter interface.
>
> Dick
> ----- Original Message -----
> From: "Jeff Hellige" <jhellige(a)earthlink.net>
> To: <classiccmp(a)classiccmp.org>
> Sent: Friday, April 06, 2001 6:06 PM
> Subject: Re: pertec interface
>
>
> > >This sounds more like ESDI to me. If memory serves that was a two
> > >cable system.
> > >RLL and MFM were too, now that I think about it, although not 50 pin
cables.
I'm betting
ESDI.
The only true ESDI system, not counting the IBM DBA interface
used in some of the PS/2 series, that I have here is in my MicroVAX
II and it had daul Maxtor XT-8380E's installed. Full height 5-1/4"
drives of 380meg each. I pulled one of them out to replace it with
the TK50. Anyway, the cables for the drives are the same width as
MFM/RLL drives: 34 and 20 pins. This is verified by comparing it
directly to a Tandon TM-502. Wasn't ESDI an outgrowth of the ST-506
drives/interface?
Jeff
--
Collector of Classic Microcomputers and Video Game Systems:
Home of the TRS-80 Model 2000 FAQ File
http://www.geocities.com/siliconvalley/lakes/6757
7 Apr
7 Apr
8:48 a.m.
A non-text attachment was scrubbed...
Name: not available
Type: text
Size: 1478 bytes
Desc: not available
Url :
http://www.classiccmp.org/pipermail/cctalk/attachments/20010407/aaa7e9bd/at…
8 a.m.
New subject: bootable rt11 tape
Hi,
I have rd54 & rx50 & tk70 in a system running rt11 5.4
How can I make an bootable backup tape of the system drive ?
cheers & thanks,
emanuel
8489
days inactive
8490
days old
13 comments
11 participants
participants (11)
-
allain＠panix.com -
ard＠p850ug1.demon.co.uk -
donm＠cts.com -
edick＠idcomm.com -
emu＠ecubics.com -
jhellige＠earthlink.net -
jim＠calico.litterbox.com -
John.Allain＠Donnelley.InfoUSA.Com -
mikeford＠socal.rr.com -
pete＠dunnington.u-net.com -
vaxman＠qwest.net