2 Jan
2008
2 Jan
'08
6:13 a.m.
Chuck Guzis wrote:
Well, the ST506 knows nothing from sectors--it's
about as "bare" and
interface as they come. I wonder if by "constant index" it's meant
that there's always an INDEX/ signal present; not just when the drive
is selected.
I'm not sure that a true ST506 can be jumpered to be permanently selected - I
think that only came along with ST412-type drives. (The schematics are in the
ST506 service manual, but I'm not awake enough yet to go looking!)
I've gone and deleted previous messages, so I'm lacking context here, but I'd
interpret "constant index" as meaning that there's a single index pulse
present for every cylinder (i.e. behaviour doesn't change depending on current
cylinder)
cheers
Jules