Date   : Tue, 26 Oct 1999 10:53:27 +0100 (BST)
From   : Frank Lee <frank@...>
Subject: Re: Disk Drive Question?

On Tue, 26 Oct 1999 GOrlandi@... wrote:
> Anyone have any leads on where I might find a disk drive either 3 1/2" or 5 
> 1/4" for a 
> BBC-B?  
> I'm new to the BBC B systems and wasn't sure if  a drive could be constructed 
> from a standard PC drive, anyone happen to know?

I used to use standard PC 3 1/2" drives happily - it's necessary to set a 
jumper for drive 0/1 (most drives have the solder pads if not the actual 
jumpers). Power can be taken from the BBC or (as I used to) from a 
separate power supply (I used to use 2A linear regulators withlots of 
smoothing capacitors which gave no problems at all - it's worth 
considering the case for the drives - I lots a disk interface on an 
electron due to a IMHO very badly designed power input on a disc drive 
case which caused 15VAC to go down the data ground).

Not used many 5 1/4" drives, but ISTR these are more or less the same in 
terms of requiring a jumper for drive0/1 selection.

HTH,

Frank


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