13 Feb
2021
13 Feb
'21
11:05 a.m.
Den l?r 13 feb. 2021 kl 18:40 skrev Jon Elson <elson at pico-systems.com>:
On 02/13/2021 11:18 AM, Mattis Lind via cctalk wrote:
Yes. I am aware of write splicing. I would imagine that the number of these
longer fluxes should be somewhere around two times the number of sectors,
right?
I see much more than what I would I would guess is the sector count.
Wouldn't these write splicing fluxes distribute quite evenly in terms of
length, creating a noise of weird fluxes?
In this case there are quite some fluxes centered around 84. If this would
be a result of write splicing I would think the same would happen on the
RX02 disk. I cannot see any of these long type fluxes there. How can that
be explained?
/Mattis
The longest flux lengths are interspersed in
between more normal flux
lengths in the actual data and I get the same type of result regardless
of
reads of the same track and between different
tracks. But the relative
frequency is much much lower for the longer flux lengths than the shorter
ones.
The low-frequency of occurrence flux changes may be head
switching when the write and erase current is turned on and
off at the beginning and end of data blocks. So, those
should be ignored.
Jon