mirror of
https://github.com/sehugg/8bitworkshop.git
synced 2024-12-23 18:31:08 +00:00
41 lines
1.1 KiB
C
41 lines
1.1 KiB
C
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#include <cv.h>
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#include <cvu.h>
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#define PATTERN 0x0000 // 256*8 = 2048 bytes
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#define IMAGE 0x0800 // 32*24 = 768 bytes
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#define COLOR 0x0b00 // 32 bytes
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#define SPRITE_PATTERNS 0x3800 // 32*32 = 1024 bytes
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#define SPRITES 0x3c00 // 4*32 = 128 bytes
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uintptr_t __at(0x6a) font_bitmap_a;
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uintptr_t __at(0x6c) font_bitmap_0;
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void setup_32_column_font() {
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cv_set_screen_mode(CV_SCREENMODE_STANDARD);
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cv_set_character_pattern_t(PATTERN);
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cv_set_image_table(IMAGE);
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cv_set_color_table(COLOR);
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cv_set_sprite_pattern_table(SPRITE_PATTERNS);
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cv_set_sprite_attribute_table(SPRITES);
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cvu_vmemset(0, 0, 0x4000);
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cvu_memtovmemcpy(PATTERN, (void *)(font_bitmap_0 - '0'*8), 2048);
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cvu_vmemset(COLOR, 0x36, 8); // set color for chars 0-63
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cvu_vmemset(COLOR+8, 0x06, 32-8); // set chars 63-255
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}
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void show_text() {
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cvu_vmemset(IMAGE, '.', 32*24);
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cvu_memtovmemcpy(IMAGE + 1, "Hello Professor Falken", 22);
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cv_set_screen_active(true);
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}
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void main() {
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char i=0;
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setup_32_column_font();
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show_text();
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while (1) {
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cvu_vmemset(COLOR, i++, 8); // set color for chars 0-63
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}
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}
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