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United Public Domain Gold 2
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TOOLS!
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StepRate.Doc.Z
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StepRate.Doc
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Text File
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1988-07-08
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5KB
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StepRate is a Public Domain Program based on "Speedup" by Mathias
Kegelmann. This version works with df0:, df1: & df2:
About Step Rates:
Step rate is the time the computer waits between commands to move
the read write head across one cylinder. Typically, 3.5 inch drives
have MANUFACTURER Specs of 2-3 ms. per step; but are slowed down
purposely by AmigaDos to accomodate 'marginal' performance drives.
About How The Amiga Does It:
The Amiga stores parameters for each drive somewhere in memory. When
the system moves the read/write head, it looks in this area for the
delay between steps. The parameter in question is in units of clock
ticks. What this program does is find the parameter table and
change the step rate time. The folks who wrote Amigados & kickstart
tried to hide this parameter, so it is unlisted in the system files.
The initial value is set to 3000 (base 10) by kickstart. I've found
that the internal drive on my machine is happy at 2000, 1/3 faster than
normal! My 5.25" drives like to run at 2200 ticks per step. Try a range
of numbers on your machine, as some drives are a wee bit faster.
About The Program:
StepRate admits two parameters:
The first is the drive (DF0: thru DF3:), and the second
parameter is the ticks per step. If you leave off the second
parameter, StepRate will tell you what the current ticks per step is.
Examples:
StepRate
Df1:
StepRate
DF0:
2000
StepRate
?
The first example will tell you how many ticks per step on drive 1,
and the second will set the ticks per step on drive 0 (the internal
one). The third line reminds you what the arguments are.
Hope you enjoy the speed as much as I do!
I can be reached on a couple of local Fido boards, Genie, and ARPANET.
Dr. David Q. King
Sunland, CA
NOTE: The program "STEPRATE" is MASHED, and located in the "X" directory.
CLICK CLOSE GADGET, OR USE CTRL-C OR CTRL-D TO EXIT