Saaay ... speaking of Z100 ... I'm just on my way to a place that has a couple
of Z100 "data separator" boards with a small aluminum brace attached. Is that
something that would be of interest?
Dick
----- Original Message -----
From: "Don Maslin" <donm_at_cts.com>
To: <classiccmp_at_classiccmp.org>
Sent: Monday, June 04, 2001 1:05 PM
Subject: Re: 3.5" MFM hard disk
>
>
> On Sat, 2 Jun 2001, Jeff Hellige wrote:
>
> > >Likely, but you must be sure that it has at least 4 heads and 153
> > >cylinders. The cylinder part is no problem - probably nothing available
> > >today would have less :) Another factor to consider is that the ST-506
> > >did not have buffered seek IIRC. That is not likely to be a concern
> > >either, but if you were going from a modern controller to the 506 it
> > >might be a problem.
> >
> > What I was thinking was that I'd substitute a more readily
> > handy drive, such as a 225, knowing that it was larger and that most
> > of it's space would be wasted due to the differences in parameters,
> > but that there would surely be enough headroom there in the heads and
> > cylinders that it would hopefully work ok. I remember there being
> > some tolerance for running MFM drives at settings that didn't match
> > thier physical layout, as we had to do it on occasion when we had a
> > drive which didn't fit any of the 'normal' drive types in the
> > AMI/Phoenix/Award BIOS tables and it was before user-derfinable drive
> > types. Since the 506 is a full height, this might be a good
> > candidate to try and use my Tandon TM502 with. I also have a ST225,
> > which I like more than the Tandon, but I'll likely use it to replace
> > a faulty drive in a Z-100.
> >
> > Jeff
>
> Sounds reasonable, Jeff. That way you only 'discard' 5mb instead of 15,
> and apply the ST-225 to a machine that is more likely to let you use all
> of it.
> - don
>
> > --
> > 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 Mon Jun 04 2001 - 15:39:42 BST