1 Mar
2005
1 Mar
'05
11:18 p.m.
On Tue, 1 Mar 2005, Tom Jennings wrote:
On Tue, 1 Mar 2005, Vintage Computer Festival wrote:
Different floppy drives have different specs for the stepper motor
step rate. Big drives are often slower (eg. 8" but that's not
always true). With 5.25's you never think about it, but it used
to be a Big Deal.
If you step it too fast it shudders and goes nowhere. There's an optimum
rate for performance, but "too slow" would be just fine for sucking data
off diskettes one time.
So what I'm wondering is why it works fine when it's stepping towards the
center of the disk but not when it's stepping back out.
As I mentioned previously, the format command actually works: it steps 77
tracks inward, but can't move back to track 0 to write the boot sector and
directory.
--
Sellam Ismail Vintage Computer Festival
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Wrong
step rate! Poke a new on eint othe chip, or does it use the old
table of junk INT 13h used to supoprt?
Um, I'm not sure. I'm not sure I understand the question either. This is
a standard ISA IDE+floppy controller. Should I try an older one? Or hook
this up to an oldr PC from the 1980s?