Re: What about II GS ROM04 ?

[Gilles Tschopp <gilles.tschopp@esis.vsnet.ch>]

David Empson wrote:
> 
> GS/OS hasn't supported formatting 400K disks since System 6.0, if I
> remember right.  It should be able to read them, provided the ProDOS FST
> can handle it (there is no MFS FST, and HFS is not used on 400K disks).
> 
> Under ProDOS-8, it is possible to format a 400K disk if the software
> fiddles with various SmartPort calls (setting number of sides, or using
> GetFormatOptions/SetFormatOptions, depending on the ROM version).
> 
> >I never tried so I don't know. I know that 7.5 or maybe even earlier
> >won't format a 400K on a Mac.
> 
> Probably doesn't even read it.  I don't have any 400K disks so I can't try it.
> 
> >Unidisks won't read 400K disks will they?
> 
> I think they will, but they don't do it very well.  I tried once, and it
> seemed to work, but I do remember hearing about a problem.  I can't
> remember the details, though.

I learnt from the excellent on-line book "Apple II History" of the Hypermall site, that 
the Apple IIc Plus had a bug which prevented handling of 400kb diskettes. But Apple 
Computer didn't make any release in order to correct this bug, because very few software 
used 400k format. 


-- 
-------------------------------------------
Gilles Tschopp, Informaticien de gestion ES
gilles.tschopp@esis.vsnet.ch
http://icare.itech.ch