mirror of
https://github.com/sehugg/8bitworkshop.git
synced 2024-11-22 14:33:51 +00:00
49 lines
1.2 KiB
C
49 lines
1.2 KiB
C
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#include <stdlib.h>
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#include <cv.h>
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#include <cvu.h>
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#define PATTERN 0x0000 // $0000 - $17ff
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#define IMAGE 0x1800 // $1800 - $1aff
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#define SPRITES 0x1b00 // not used
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#define COLOR 0x2000 // $2000 - $37ff
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/* link in MODE 2 bitmap data */
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//#link "sailboat.s"
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extern const unsigned char msx_bitmap[0x3807];
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void setup_mode2() {
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cvu_vmemset(0, 0, 0x4000);
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cv_set_screen_mode(CV_SCREENMODE_BITMAP); // mode 2
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cv_set_image_table(IMAGE);
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cv_set_character_pattern_t(PATTERN|0x1fff); // AND mask
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cv_set_color_table(COLOR|0x1fff); // AND mask
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cv_set_sprite_attribute_table(SPRITES);
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}
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void main() {
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// turn off screen
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cv_set_screen_active(false);
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// setup mode 2 grpahics
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setup_mode2();
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// copy pattern and color tables
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cvu_memtovmemcpy(PATTERN, msx_bitmap+7, 0x1800);
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cvu_memtovmemcpy(COLOR, msx_bitmap+7+COLOR, 0x1800);
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// set IMAGE table to incrementing values
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for (int i=0; i<0x300; i++) {
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cvu_voutb(i, IMAGE+i);
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}
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// clear sprite table
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cvu_vmemset(SPRITES, 0, 0x100);
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// turn off screen
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cv_set_screen_active(true);
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while (1) {
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//cv_set_character_pattern_t(PATTERN|rand()); // AND mask
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//cv_set_color_table(COLOR|rand()); // AND mask
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}
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}
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