mirror of
https://github.com/cc65/cc65.git
synced 2024-12-27 00:29:31 +00:00
304 lines
8.4 KiB
C
304 lines
8.4 KiB
C
/*****************************************************************************\
|
|
** plasma test program for cc65. **
|
|
** **
|
|
** (w)2001 by groepaz/hitmen **
|
|
** **
|
|
** Cleanup and porting by Ullrich von Bassewitz. **
|
|
** **
|
|
\*****************************************************************************/
|
|
|
|
|
|
|
|
#include <stdlib.h>
|
|
#include <time.h>
|
|
#include <conio.h>
|
|
|
|
|
|
|
|
#if defined(__C64__) || defined(__C128__)
|
|
# define SCREEN1 0xE000
|
|
# define SCREEN2 0xE400
|
|
# define CHARSET 0xE800
|
|
# define outb(addr,val) (*(addr)) = (val)
|
|
# define inb(addr) (*(addr))
|
|
#elif defined(__CBM510__)
|
|
# define SCREEN1 0xF000
|
|
# define SCREEN2 0xF400
|
|
# define CHARSET 0xE000
|
|
# define outb(addr,val) pokebsys ((unsigned)(addr), val)
|
|
# define inb(addr) peekbsys ((unsigned)(addr))
|
|
#elif defined(__PLUS4__)
|
|
# define SCREEN1 0x6400
|
|
# define SCREEN2 0x6C00
|
|
# define CHARSET 0x7000
|
|
# define outb(addr,val) (*(addr)) = (val)
|
|
# define inb(addr) (*(addr))
|
|
#endif
|
|
|
|
|
|
|
|
/* Values for the VIC address register to switch between the two pages */
|
|
#if defined(__PLUS4__)
|
|
#define PAGE1 ((SCREEN1 >> 8) & 0xF8)
|
|
#define PAGE2 ((SCREEN2 >> 8) & 0xF8)
|
|
#define CHARADR ((CHARSET >> 8) & 0xFC)
|
|
#else
|
|
#define PAGE1 ((SCREEN1 >> 6) & 0xF0) | ((CHARSET >> 10) & 0x0E)
|
|
#define PAGE2 ((SCREEN2 >> 6) & 0xF0) | ((CHARSET >> 10) & 0x0E)
|
|
#endif
|
|
|
|
|
|
|
|
/* Use static local variables for speed */
|
|
#pragma static-locals (1);
|
|
|
|
|
|
|
|
static const unsigned char sinustable[0x100] = {
|
|
0x80, 0x7d, 0x7a, 0x77, 0x74, 0x70, 0x6d, 0x6a,
|
|
0x67, 0x64, 0x61, 0x5e, 0x5b, 0x58, 0x55, 0x52,
|
|
0x4f, 0x4d, 0x4a, 0x47, 0x44, 0x41, 0x3f, 0x3c,
|
|
0x39, 0x37, 0x34, 0x32, 0x2f, 0x2d, 0x2b, 0x28,
|
|
0x26, 0x24, 0x22, 0x20, 0x1e, 0x1c, 0x1a, 0x18,
|
|
0x16, 0x15, 0x13, 0x11, 0x10, 0x0f, 0x0d, 0x0c,
|
|
0x0b, 0x0a, 0x08, 0x07, 0x06, 0x06, 0x05, 0x04,
|
|
0x03, 0x03, 0x02, 0x02, 0x02, 0x01, 0x01, 0x01,
|
|
0x01, 0x01, 0x01, 0x01, 0x02, 0x02, 0x02, 0x03,
|
|
0x03, 0x04, 0x05, 0x06, 0x06, 0x07, 0x08, 0x0a,
|
|
0x0b, 0x0c, 0x0d, 0x0f, 0x10, 0x11, 0x13, 0x15,
|
|
0x16, 0x18, 0x1a, 0x1c, 0x1e, 0x20, 0x22, 0x24,
|
|
0x26, 0x28, 0x2b, 0x2d, 0x2f, 0x32, 0x34, 0x37,
|
|
0x39, 0x3c, 0x3f, 0x41, 0x44, 0x47, 0x4a, 0x4d,
|
|
0x4f, 0x52, 0x55, 0x58, 0x5b, 0x5e, 0x61, 0x64,
|
|
0x67, 0x6a, 0x6d, 0x70, 0x74, 0x77, 0x7a, 0x7d,
|
|
0x80, 0x83, 0x86, 0x89, 0x8c, 0x90, 0x93, 0x96,
|
|
0x99, 0x9c, 0x9f, 0xa2, 0xa5, 0xa8, 0xab, 0xae,
|
|
0xb1, 0xb3, 0xb6, 0xb9, 0xbc, 0xbf, 0xc1, 0xc4,
|
|
0xc7, 0xc9, 0xcc, 0xce, 0xd1, 0xd3, 0xd5, 0xd8,
|
|
0xda, 0xdc, 0xde, 0xe0, 0xe2, 0xe4, 0xe6, 0xe8,
|
|
0xea, 0xeb, 0xed, 0xef, 0xf0, 0xf1, 0xf3, 0xf4,
|
|
0xf5, 0xf6, 0xf8, 0xf9, 0xfa, 0xfa, 0xfb, 0xfc,
|
|
0xfd, 0xfd, 0xfe, 0xfe, 0xfe, 0xff, 0xff, 0xff,
|
|
0xff, 0xff, 0xff, 0xff, 0xfe, 0xfe, 0xfe, 0xfd,
|
|
0xfd, 0xfc, 0xfb, 0xfa, 0xfa, 0xf9, 0xf8, 0xf6,
|
|
0xf5, 0xf4, 0xf3, 0xf1, 0xf0, 0xef, 0xed, 0xeb,
|
|
0xea, 0xe8, 0xe6, 0xe4, 0xe2, 0xe0, 0xde, 0xdc,
|
|
0xda, 0xd8, 0xd5, 0xd3, 0xd1, 0xce, 0xcc, 0xc9,
|
|
0xc7, 0xc4, 0xc1, 0xbf, 0xbc, 0xb9, 0xb6, 0xb3,
|
|
0xb1, 0xae, 0xab, 0xa8, 0xa5, 0xa2, 0x9f, 0x9c,
|
|
0x99, 0x96, 0x93, 0x90, 0x8c, 0x89, 0x86, 0x83
|
|
};
|
|
|
|
|
|
|
|
static void doplasma (register unsigned char* scrn)
|
|
{
|
|
unsigned char xbuf[40];
|
|
unsigned char ybuf[25];
|
|
unsigned char c1a,c1b;
|
|
unsigned char c2a,c2b;
|
|
unsigned char c1A,c1B;
|
|
unsigned char c2A,c2B;
|
|
register unsigned char i, ii;
|
|
|
|
c1a = c1A;
|
|
c1b = c1B;
|
|
for (ii = 0; ii < 25; ++ii) {
|
|
ybuf[ii] = (sinustable[c1a] + sinustable[c1b]);
|
|
c1a += 4;
|
|
c1b += 9;
|
|
}
|
|
c1A += 3;
|
|
c1B -= 5;
|
|
c2a = c2A;
|
|
c2b = c2B;
|
|
for (i = 0; i < 40; ++i) {
|
|
xbuf[i] = (sinustable[c2a] + sinustable[c2b]);
|
|
c2a += 3;
|
|
c2b += 7;
|
|
}
|
|
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]);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
|
|
static void makechar (void)
|
|
{
|
|
static const unsigned char bittab[8] = {
|
|
0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80
|
|
};
|
|
unsigned char i, ii, b, s;
|
|
unsigned c;
|
|
|
|
gotoxy (0, 1);
|
|
for (c = 0; c < 0x100; ++c) {
|
|
s = sinustable[c];
|
|
for (i = 0; i < 8; ++i){
|
|
b = 0;
|
|
for (ii = 0; ii < 8; ++ii) {
|
|
if ((rand() & 0xFF) > s) {
|
|
b |= bittab[ii];
|
|
}
|
|
}
|
|
((unsigned char*)CHARSET) [(c*8) + i] = b;
|
|
}
|
|
if ((c & 0x07) == 0) {
|
|
cputc ('.');
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
|
|
int main (void)
|
|
{
|
|
unsigned char border;
|
|
unsigned char background;
|
|
unsigned char text;
|
|
unsigned char v;
|
|
clock_t t;
|
|
unsigned long f = 0;
|
|
unsigned long sec;
|
|
unsigned sec10;
|
|
unsigned long fps;
|
|
unsigned fps10;
|
|
|
|
|
|
#if defined(__C64__)
|
|
unsigned char block;
|
|
#endif
|
|
#if defined(__C128__)
|
|
unsigned char block;
|
|
unsigned char initflag;
|
|
unsigned char graphflag;
|
|
#endif
|
|
#if defined(__PLUS4__)
|
|
unsigned int i;
|
|
unsigned char v2;
|
|
#endif
|
|
|
|
clrscr ();
|
|
cprintf ("Making charset, mompls");
|
|
makechar();
|
|
|
|
/* Set the border and background colors */
|
|
border = bordercolor (COLOR_BLUE);
|
|
background = bgcolor (COLOR_BLUE);
|
|
text = textcolor (COLOR_BLACK);
|
|
clrscr ();
|
|
|
|
#if defined(__C64__) || defined(__C128__)
|
|
/* Move the VIC 16K block */
|
|
block = inb (&CIA2.pra);
|
|
outb (&CIA2.pra, (block & 0xFC) | ((SCREEN1 >> 14) ^ 0x03));
|
|
#endif
|
|
#if defined(__C128__)
|
|
/* Save and change some flags, so that kernal/basic interrupt handler will
|
|
** not interfere with our routine.
|
|
*/
|
|
initflag = *(unsigned char*) 0xA04;
|
|
*(unsigned char*) 0xA04 &= 0xFE;
|
|
graphflag = *(unsigned char*) 0xD8;
|
|
*(unsigned char*) 0xD8 = 0xFF;
|
|
#endif
|
|
|
|
/* Remember the VIC address register */
|
|
#if defined(__PLUS4__)
|
|
v = inb (&TED.char_addr);
|
|
v2 = inb (&TED.video_addr);
|
|
#else
|
|
v = inb (&VIC.addr);
|
|
#endif
|
|
|
|
#if defined(__PLUS4__)
|
|
for (i=0;i<1000;i++) {
|
|
((unsigned char *) (SCREEN1-0x0400))[i] = 0;
|
|
((unsigned char *) (SCREEN2-0x0400))[i] = 0;
|
|
}
|
|
outb (&TED.char_addr, CHARADR);
|
|
#endif
|
|
|
|
/* Run the demo until a key was hit */
|
|
t = clock ();
|
|
while (!kbhit()) {
|
|
/* Build page 1, then make it visible */
|
|
doplasma ((unsigned char*)SCREEN1);
|
|
#if defined(__PLUS4__)
|
|
outb (&TED.video_addr, PAGE1);
|
|
#else
|
|
outb (&VIC.addr, PAGE1);
|
|
#endif
|
|
|
|
/* Build page 2, then make it visible */
|
|
doplasma ((unsigned char*)SCREEN2);
|
|
#if defined(__PLUS4__)
|
|
outb (&TED.video_addr, PAGE2);
|
|
#else
|
|
outb (&VIC.addr, PAGE2);
|
|
#endif
|
|
|
|
/* Count frames */
|
|
f += 2;
|
|
}
|
|
t = clock() - t;
|
|
|
|
/* Switch back the VIC screen */
|
|
#if defined(__PLUS4__)
|
|
outb (&TED.video_addr, v2);
|
|
outb (&TED.char_addr, v);
|
|
#else
|
|
outb (&VIC.addr, v);
|
|
#endif
|
|
|
|
#if defined(__C64__) || defined(__C128__)
|
|
/* Move back the VIC 16K block */
|
|
outb (&CIA2.pra, block);
|
|
#endif
|
|
#if defined(__C128__)
|
|
/* Restore the flags */
|
|
*(unsigned char*) 0xA04 = initflag;
|
|
*(unsigned char*) 0xD8 = graphflag;
|
|
#endif
|
|
|
|
/* Fetch the character from the keyboard buffer and discard it */
|
|
(void) cgetc();
|
|
|
|
/* Reset screen colors */
|
|
bordercolor (border);
|
|
bgcolor (background);
|
|
textcolor (text);
|
|
clrscr ();
|
|
|
|
/* Calculate stats */
|
|
sec = (t * 10) / CLK_TCK;
|
|
sec10 = sec % 10;
|
|
sec /= 10;
|
|
fps = (f * (CLK_TCK * 10)) / t;
|
|
fps10 = fps % 10;
|
|
fps /= 10;
|
|
|
|
/* Output stats */
|
|
gotoxy (0, 0); cprintf ("time : %lu.%us", sec, sec10);
|
|
gotoxy (0, 1); cprintf ("frames: %lu", f);
|
|
gotoxy (0, 2); cprintf ("fps : %lu.%u", fps, fps10);
|
|
|
|
/* Wait for a key, then end */
|
|
cputsxy (0, 4, "Press any key when done...");
|
|
(void) cgetc ();
|
|
|
|
/* Done */
|
|
return EXIT_SUCCESS;
|
|
}
|
|
|
|
|