Date   : Sun, 25 Sep 2005 20:57:48 +0100
From   : "Ian Wolstenholme" <BBCMailingList@...>
Subject: Re: Strange 51/4

I thought the only valid parameters for FDRIVE were 0-3.  What do
4-7 do?

Best wishes,


Ian

----- Original Message -----
From: Helen & John Simpson
To:  <bbc-micro@...>
Sent: Sun, 25 Sep 2005 15:18:49 +0100
Subject: RE: [BBC-Micro] Strange 51/4" drive fault

Interesting - I have a 3.5" and a 5.25" drive on mine. Prior to my
tinkering with the FDRIVE setting, both worked ok. 

So FDRIVE 5 must be the only correct setting for this arrangement.

John

> -----Original Message-----
> From: Majordomo List Manager [mailto:majordomo@...] 
> On Behalf Of A. J. Davis
> Sent: 25 September 2005 09:49
> To: bbc-micro@...
> Subject: Re: [BBC-Micro] Strange 51/4" drive fault
> 
> 
> Checking the step rate is also a valuable thing to remember 
> if you fit a 
> 3.5" drive to your Master.  Anything lower than 5 in the 
> FDRIVE setting 
> and it won't format all 80 tracks.
> 
> 
> Helen & John Simpson wrote:
> 
> >Amazing! It works! That explains everything.
> >
> >I changed the setting myself when I fixed the CMOS battery, in an 
> >attempt to "tidy things up". I must have then used 80T disks for a 
> >while and so not noticed the problem. The problem arose when 
> using some 
> >fairly old and dodgy 40T disks, so I naturally assumed the drive had 
> >gone wrong...
> >
> >It was Fdrive 7 actually, but I think that is the same as 
> Fdrive 3 in 
> >respect of step rate. Fdrive 5 works fine.
> >
> >Moral: do not tinker with things that are working.
> >
> >  
> >
> 
> 
>