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Added the plasma sample to the README file.

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Added a comment about loop unrolling to the plasma source.


git-svn-id: svn://svn.cc65.org/cc65/trunk@1016 b7a2c559-68d2-44c3-8de9-860c34a00d81
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cuz 2001-10-09 09:34:21 +00:00
parent fc253be753
commit 58da15412c
2 changed files with 18 additions and 8 deletions
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22
samples/README
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@ -1,10 +1,10 @@
This directory contains sample programs for the cc65 compiler.
This directory contains sample programs for the cc65 compiler.
Below is a short description for each of the programs together with a list of
the supported platforms.
the supported platforms.
Please note:
Please note:
* The supplied makefile needs with GNU make. It works out of the box on
Linux and similar systems. If you're using Windows, you will have to
@ -18,27 +18,33 @@ Please note:
List of supplied sample programs:
---------------------------------------------------------------------------
-----------------------------------------------------------------------------
Name: hello
Description: A fancy "Hello world" type program that uses the conio
console I/O library for output.
Platforms: Runs on all platforms that support conio, which means:
Apple ][, Atari, C64, C128, CBM510, CBM610, PET, Plus/4
---------------------------------------------------------------------------
-----------------------------------------------------------------------------
Name: mousedemo
Description: Shows how to use the mouse.
Platforms: All systems with mouse and conio support:
Atari (untested), C64, C128 and CBM510
---------------------------------------------------------------------------
-----------------------------------------------------------------------------
Name: nachtm
Description: Plays "Eine kleine Nachtmusik" by Wolfgang Amadeus Mozart
Platforms: All systems that have the Commodore SID (Sound Interface
Device):
C64, C128, CBM510, CBM610
---------------------------------------------------------------------------
-----------------------------------------------------------------------------
Name: plasma
Description: A fancy graphics demo written by groepaz/hitmen.
Platforms: The program needs a VIC but has not been ported to / tested
on the C128, so it does currently run on the CBM510 and C64.
-----------------------------------------------------------------------------
Name: sieve
Description: Implements the "Sieve of Eratosthenes" as a way to find all
prime numbers in a specific number interval. Often used as
@ -46,4 +52,4 @@ Description: Implements the "Sieve of Eratosthenes" as a way to find all
Platforms: All systems with conio and clock support:
Atari, C64, C128, CBM510, CBM610, PET, Plus/4

4
samples/plasma.c
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@ -112,6 +112,10 @@ static void doplasma (void)
c2A += 2;
c2B -= 3;
for (ii = 0; ii < 25; ++ii) {
/* Unrolling the following loop will give a speed increase of
* nearly 100% (~24fps), but it will also increase the code
* size a lot.
*/
for (i = 0; i < 40; ++i, ++scrn) {
*scrn = (xbuf[i] + ybuf[ii]);
}