From 58da15412c6f981f0786c85e2835f311af1d02ad Mon Sep 17 00:00:00 2001 From: cuz Date: Tue, 9 Oct 2001 09:34:21 +0000 Subject: [PATCH] Added the plasma sample to the README file. 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 --- samples/README | 22 ++++++++++++++-------- samples/plasma.c | 4 ++++ 2 files changed, 18 insertions(+), 8 deletions(-) diff --git a/samples/README b/samples/README index a27fb253a..d91811228 100644 --- a/samples/README +++ b/samples/README @@ -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 - + diff --git a/samples/plasma.c b/samples/plasma.c index e81bc427d..b9fc6a265 100644 --- a/samples/plasma.c +++ b/samples/plasma.c @@ -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]); } -- 2.39.5