| T.R | Title | User | Personal
Name | Date | Lines |
|---|
| 1210.1 | Not what you expected | DEBIT::SOO | | Wed Mar 02 1988 13:50 | 5 |
| I tried that program some time ago and noticed very little improvement
in disk access performance. Yes, it does slow down a little if
you set the step rate to some hugh number, if that's what you want.
It is probably more useful for changing the way the drive sound,
especially A1000 drives.
|
| 1210.2 | | LEDS::ACCIARDI | | Wed Mar 02 1988 13:59 | 6 |
| I don't know if its the same program by a different name, but I've
been using a little one called 'Speedup' that absolutely seems to
work.
Ed.
|
| 1210.3 | ? | NOBHIL::BODINE_CH | | Wed Mar 02 1988 15:06 | 3 |
| Really! Tell us more! Is it public domain?
Chris
|
| 1210.4 | it's PD | MTBLUE::PFISTER_ROB | Steak knife, puta hole in my head | Wed Mar 02 1988 15:21 | 13 |
| Yup, it is PD (source included) all it does is muck with some internal
Dos.device?? structures to decrease the delay in the step rate of the
drive motor. This is a rather minor increase, someone figured out the
increase expected would be nominal (like < 5%) even if you could set this
to zero.
My own experience is that I couldn't set my drives to very much lower
without read/write errors up the ying-yang. Apon re-boot the original
values are restored, so no biggie. The drive does sound better because
it gronks at a higher frequency, which is less annoying to most ears.
Robb
|
| 1210.5 | | LEDS::ACCIARDI | | Wed Mar 02 1988 15:29 | 13 |
| Sure, I got it a while back from PLINK. I'll upload it here; probably
over the weekend, since I've been grotesquely neglecting my lovely
wife, Jayne. Between the Amiga and my new money sink (electric
buggy racing) she only sees the back of my head for days on end.
The only problem with these floppy speedup programs is that it is very
easy for the tiny stepper motor to lose steps with too high a step
rate. The maximum slew rate is a function of the viscous drag and the
inertia of the positioner carriage. I was able to reliably run my
floppys with the step interval set to 2000 (uSecs) down from 3000.
Anything lower than that, and you could hear the drives retrying.
After three retrys, an Intuition requestor will come up griping that it
cant read the floppy.
|
| 1210.6 | | DICKNS::MACDONALD | WA1OMM Listening 52.525 | Wed Mar 02 1988 15:58 | 8 |
| Speedup is the same as steprate. They both alter the step rate
of the floppy drive. They do NOT alter the speed of the drive. In
that regard both programs provide identical alterations in step
rate performance. Given the fact that we are dealing with milliseconds,
you're going to have an awful difficult time in measuring differences
in access times!!! You will however note a different sound at faster
step rates. I would not recommend attempting to increase the step
rate by more than 50% of the default or you may run into difficulty.
|