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Almathera Ten Pack 3: CDPD 3
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cpuclr
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cpuclr.doc
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1995-03-18
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CPUClr V2.000
COPYRIGHT
This program is based on the original CPUClr-version by Oliver
Wagner. The few changes I wanted to make have grown into a nearly
complete rewritten program.
My CPUClr is declared as Freeware, so everybody may use it
without any charge. Copying this program to your friends is
welcome as long as you do not take any money for it. But all
rights are reserved, because I'll certainly publish a modified
version in a local computer magazine.
WHAT IS IT
CPUClr is a small hack, inspired by CPUBlit, that replaces the
BltClear()-Routine of the "graphics.library" with a highly
optimized 68020 (or higher) version. This gains (in a simple
test) approx. 60% speed and should be even faster on an A3000,
because the CPU works more efficient in 32-Bit ChipRAM.
INSTALLATION
All you have to do to "install" the patch is: Call CPUClr in your
User-Startup! (No RUN is needed.) Executing CPUClr a second time
will remove the patch again. (If you have installed another
BltClear-Patch while mine is running, CPUClr can't idenitify the
routine and will install mine again...)
SYSTEM REQUIREMENTS
CPUClr requires at least Kickstart V37.xxx and a 68020 CPU. If
these requirement aren't fullfilled, CPUClr will return to the
CLI without any comment.
THE UNSECURE VERSION
Everybody who prefers this, may use the "unsecure"-version of
CPUClr, which lacks the most security-checks plus the 68020-test.
Additionally, I reduced the screen-output, which made the
executable some bytes shorter.
THE AUTHOR
If you have any comments for me or just want to tell me, that you
hate my program, don't hesitate to connect me under one of the
following addresses:
Snail-Mail: Peter Simons E-Mail: simons@peti.GUN.de (Usenet)
Europaring 20 2:2402/320.5 (FIDO-Net)
D-5300 Bonn 1
Germany Voice: Tel. 0228 / 746061