/*****************************************************************************\ ** plasma test program for cc65. ** ** ** ** (w)2001 by groepaz ** ** ** ** Cleanup and porting by Ullrich von Bassewitz. ** ** ** \*****************************************************************************/ #include #include #include #include #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() & 0xFFu) > 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); if (doesclrscrafterexit ()) { cputsxy (0, 4, "Press any key when done..."); (void) cgetc (); } /* Done */ return EXIT_SUCCESS; }