7 Feb
2009
7 Feb
'09
2:37 a.m.
On Fri, 6 Feb 2009, Fred Cisin wrote:
I was not trying to change the speed. I was trying to
generate a well
synchronized sector pulse to make a 3.5" drive suitable for use on a "hard
sector" controller.
Ok, but you have to make sure that your modifications don't interfere with
the speed controlling circuit, which in turn relies on the index pulse
and/or the pulses that come from the photocell assembly.
Would it be any easier to slightly speed up the data
transfer rate,
instead?
Alas no. The transfer rate is fixed, it can only be changed between 2us
and 4us bit cell widths, the frequency is derived from the internal clock.
Christian