PCs that support only one floppy drive in hardware

[Tony Duell]

> 
> >
> >Subject: Re: PCs that support only one floppy drive in hardware
> >   From: ard at p850ug1.demon.co.uk (Tony Duell)
> >   Date: Thu, 13 Oct 2005 10:39:21 +0100 (BST)
> >     To: cctalk at classiccmp.org
> >
> >> >The _drive_ is HD, I am not sure what the controller can do, though. The 
> >> >suffix letters of Teac drive numbers seem to indicate the specs as 
> >> >follows : 
> >> >
> >> >A : 40 cylinder single-sided
> >> >B : 40 cyclinder double sided
> >> >C : 77 cylinder single sided (??? I have never seen this)
> >> >D : 77 cylinder double sided (??? or this)
> >> >E : 80 cylinder single sided
> >> >F : 80 cylinder double sided
> >> 
> >> 300 rpm only
> >> 
> >> >G : 80 cylinder double sided, 360RPM, high density (1.2M for PCs)
> >> 
> >> Does both 300 and 360. (can replace the E and F with correct jumpers).
> >
> >I am not convinced of that. I think 'G' implies 360RM. The drive in 
> >question is a 'GFR', thus having the capabilites of both the 'G' and the 
> >'F', in other words both 360 and 300 rpm.
> 
> I am certain of the GFR, I have maybe 8 spares and 5 in use to confirm it 

I am also certain about the GFR. I agree with you. The GFR is a dual 
speed drive, 360 rpm and 300rpm.

What I am saying is that the letter 'G' as a suffix indicates a 360rpm 
drive. The letter 'F' indicates a 300 rpm drive (both being 80 cylinder 
double-sided). So both G and F mean a dual speed drive.

-tony