Re: Fast GCR decoding?

From: Groepaz <*groepaz_at_gmx.net*> Date: Sun, 13 Jan 2013 07:30:30 +0100 Message-Id: <201301130730.30441.groepaz@gmx.net> · groepaz_at_gmx.net

On Sunday 13 January 2013, you wrote:
> On 2005-11-07, at 20:10, Spiro Trikaliotis wrote:
> > Hello,
> > 
> > * On Mon, Nov 07, 2005 at 07:23:09PM +0100 silverdr@inet.com.pl wrote:
> >> Does anyone know if there is a known, substantially faster GCR
> >> decoding algorithm than the one in the drive's ROM?
> > 
> > in the 157x, there are other functions than in the 154x which are table
> > driven. These are much faster.
> 
> Is there anything known that would be still faster? AFAIU ProfessionalDOS
> does it faster but with help from its hardware. Anyone heard of faster
> than 1571 but pure software based decoding?

thats basically just an eprom with an huge lookup table though (the cbm dual 
drives do it in a similar way)

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