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_at_earthlink.net>
> To: <classiccmp_at_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
> >
> >
>
>
>
Received on Fri Apr 06 2001 - 21:54:27 BST