O.T. c64 slow drives. was

[Sy Ali]

On 7/13/06, Lance F. Squire <lance-5ZoueyuiTZhBDgjK7y7TUQ at public.gmane.org> wrote:
> The 'inside' story to this slowness is quite interesting.
>
> First, the 1541 started as a Vic 20 drive, and was acceptably fast.
>
> Apparently, a timing error in the 64 roms caused the reads to miss the
> next sector. This caused the system to have to wait for the sector to
> come around again.
>
> As this was slower than running the drives in 'slow' mode. They just
> shipped the 64 coloured drives with 'slow' mode set as default, rather
> than tossing the burnt roms and fixing.

This explains why the replacement ROMs were so spectacular.  Replace
the chip in the drive and use an equivalent in the system.  I can't
remember the name of the chip though.
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