30 lines
668 B
C
30 lines
668 B
C
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#include "common.h"
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//#link "common.c"
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#include <cbm_screen_charmap.h>
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void main(void) {
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unsigned int i;
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clrscr(); // clear the screen
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POKE(0x400, 'A'); // write to first byte of screen memory
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POKE(0x400, 65); // character code for 'A'
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POKE(0x400 + 40*24 + 39, 'Z'); // row 24, column 39
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// fill with random characters
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for (i=0; i<40*25; i++)
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POKE(0x400 + i, 205 + (rand() & 1));
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// set character set to uppercase + graphics characters
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SET_VIC_BITMAP(0x1000);
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// set color map underlying characters
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for (i=0; i<40*25; i++)
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COLOR_RAM[i] = COLOR_GREEN;
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// infinite loop (avoid "ready" prompt)
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while (1);
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}
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