1 /*****************************************************************************
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2 * plasma test program for cc65. *
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4 * (w)2001 by groepaz/hitmen *
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6 * Cleanup and porting by Ullrich von Bassewitz. *
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8 *****************************************************************************/
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18 #if defined(__C64__)
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19 # define SCREEN1 0xE000
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20 # define SCREEN2 0xE400
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21 # define CHARSET 0xE800
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22 # define outb(addr,val) (*(addr)) = (val)
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23 # define inb(addr) (*(addr))
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24 #elif defined(__CBM510__)
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25 # define SCREEN1 0xF000
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26 # define SCREEN2 0xF400
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27 # define CHARSET 0xE000
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28 # define outb(addr,val) pokebsys ((unsigned)(addr), val)
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29 # define inb(addr) peekbsys ((unsigned)(addr))
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34 /* Values for the VIC address register to switch between the two pages */
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35 #define PAGE1 ((SCREEN1 >> 6) & 0xF0) | ((CHARSET >> 10) & 0x0E)
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36 #define PAGE2 ((SCREEN2 >> 6) & 0xF0) | ((CHARSET >> 10) & 0x0E)
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40 /* Use static local variables for speed */
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41 #pragma staticlocals (1);
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45 static const unsigned char sinustable[0x100] = {
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46 0x80, 0x7d, 0x7a, 0x77, 0x74, 0x70, 0x6d, 0x6a,
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47 0x67, 0x64, 0x61, 0x5e, 0x5b, 0x58, 0x55, 0x52,
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48 0x4f, 0x4d, 0x4a, 0x47, 0x44, 0x41, 0x3f, 0x3c,
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49 0x39, 0x37, 0x34, 0x32, 0x2f, 0x2d, 0x2b, 0x28,
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50 0x26, 0x24, 0x22, 0x20, 0x1e, 0x1c, 0x1a, 0x18,
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51 0x16, 0x15, 0x13, 0x11, 0x10, 0x0f, 0x0d, 0x0c,
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52 0x0b, 0x0a, 0x08, 0x07, 0x06, 0x06, 0x05, 0x04,
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53 0x03, 0x03, 0x02, 0x02, 0x02, 0x01, 0x01, 0x01,
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54 0x01, 0x01, 0x01, 0x01, 0x02, 0x02, 0x02, 0x03,
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55 0x03, 0x04, 0x05, 0x06, 0x06, 0x07, 0x08, 0x0a,
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56 0x0b, 0x0c, 0x0d, 0x0f, 0x10, 0x11, 0x13, 0x15,
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57 0x16, 0x18, 0x1a, 0x1c, 0x1e, 0x20, 0x22, 0x24,
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58 0x26, 0x28, 0x2b, 0x2d, 0x2f, 0x32, 0x34, 0x37,
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59 0x39, 0x3c, 0x3f, 0x41, 0x44, 0x47, 0x4a, 0x4d,
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60 0x4f, 0x52, 0x55, 0x58, 0x5b, 0x5e, 0x61, 0x64,
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61 0x67, 0x6a, 0x6d, 0x70, 0x74, 0x77, 0x7a, 0x7d,
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62 0x80, 0x83, 0x86, 0x89, 0x8c, 0x90, 0x93, 0x96,
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63 0x99, 0x9c, 0x9f, 0xa2, 0xa5, 0xa8, 0xab, 0xae,
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64 0xb1, 0xb3, 0xb6, 0xb9, 0xbc, 0xbf, 0xc1, 0xc4,
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65 0xc7, 0xc9, 0xcc, 0xce, 0xd1, 0xd3, 0xd5, 0xd8,
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66 0xda, 0xdc, 0xde, 0xe0, 0xe2, 0xe4, 0xe6, 0xe8,
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67 0xea, 0xeb, 0xed, 0xef, 0xf0, 0xf1, 0xf3, 0xf4,
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68 0xf5, 0xf6, 0xf8, 0xf9, 0xfa, 0xfa, 0xfb, 0xfc,
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69 0xfd, 0xfd, 0xfe, 0xfe, 0xfe, 0xff, 0xff, 0xff,
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70 0xff, 0xff, 0xff, 0xff, 0xfe, 0xfe, 0xfe, 0xfd,
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71 0xfd, 0xfc, 0xfb, 0xfa, 0xfa, 0xf9, 0xf8, 0xf6,
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72 0xf5, 0xf4, 0xf3, 0xf1, 0xf0, 0xef, 0xed, 0xeb,
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73 0xea, 0xe8, 0xe6, 0xe4, 0xe2, 0xe0, 0xde, 0xdc,
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74 0xda, 0xd8, 0xd5, 0xd3, 0xd1, 0xce, 0xcc, 0xc9,
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75 0xc7, 0xc4, 0xc1, 0xbf, 0xbc, 0xb9, 0xb6, 0xb3,
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76 0xb1, 0xae, 0xab, 0xa8, 0xa5, 0xa2, 0x9f, 0x9c,
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77 0x99, 0x96, 0x93, 0x90, 0x8c, 0x89, 0x86, 0x83
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82 static unsigned char *scrn;
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86 static void doplasma (void)
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88 unsigned char xbuf[40];
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89 unsigned char ybuf[25];
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91 unsigned char c1a,c1b;
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92 unsigned char c2a,c2b;
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93 unsigned char c1A,c1B;
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94 unsigned char c2A,c2B;
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98 for (ii = 0; ii < 25; ++ii) {
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99 ybuf[ii] = (sinustable[c1a] + sinustable[c1b]);
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107 for (i = 0; i < 40; ++i) {
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108 xbuf[i] = (sinustable[c2a] + sinustable[c2b]);
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114 for (ii = 0; ii < 25; ++ii) {
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115 /* Unrolling the following loop will give a speed increase of
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116 * nearly 100% (~24fps), but it will also increase the code
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119 for (i = 0; i < 40; ++i, ++scrn) {
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120 *scrn = (xbuf[i] + ybuf[ii]);
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127 static void makechar (void)
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129 static const unsigned char bittab[8] = {
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130 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80
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132 unsigned char i, ii, b, s;
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136 for (c = 0; c < 0x100; ++c) {
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138 for (i = 0; i < 8; ++i){
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140 for (ii = 0; ii < 8; ++ii) {
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141 if ((rand() & 0xFF) > s) {
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145 ((unsigned char*)CHARSET) [(c*8) + i] = b;
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147 if ((c & 0x07) == 0) {
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157 unsigned char border;
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158 unsigned char background;
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159 unsigned char text;
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162 unsigned long f = 0;
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170 cprintf ("Making charset, mompls");
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173 /* Set the border and background colors */
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174 border = bordercolor (COLOR_BLUE);
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175 background = bgcolor (COLOR_BLUE);
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176 text = textcolor (COLOR_BLACK);
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179 #if defined(__C64__)
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180 /* Move the VIC 16K block */
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181 outb (&CIA2.pra, 0x00);
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184 /* Remember the VIC address register */
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185 v = inb (&VIC.addr);
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187 /* Run the demo until a key was hit */
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190 /* Build page 1, then make it visible */
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191 scrn = (unsigned char*)SCREEN1;
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193 outb (&VIC.addr, PAGE1);
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195 /* Build page 2, then make it visible */
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196 scrn = (unsigned char*)SCREEN2;
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198 outb (&VIC.addr, PAGE2);
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205 /* Switch back the VIC screen */
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206 outb (&VIC.addr, v);
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208 #if defined(__C64__)
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209 /* Move back the VIC 16K block */
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210 outb (&CIA2.pra, 0x03);
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213 /* Fetch the character from the keyboard buffer and discard it */
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216 /* Reset screen colors */
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217 bordercolor (border);
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218 bgcolor (background);
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222 /* Calculate stats */
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223 sec = (t * 10) / CLK_TCK;
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226 fps = (f * (CLK_TCK * 10)) / t;
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231 gotoxy (0, 0); cprintf ("time : %lu.%us", sec, sec10);
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232 gotoxy (0, 1); cprintf ("frames: %lu", f);
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233 gotoxy (0, 2); cprintf ("fps : %lu.%u", fps, fps10);
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235 /* Wait for a key, then end */
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236 cputsxy (0, 4, "Press any key when done...");
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240 return EXIT_SUCCESS;
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