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8bitworkshop/presets/coleco/text.c

31 lines
658 B
C

#include <cv.h>
#include <cvu.h>
#define PATTERN 0x0000
#define IMAGE 0x0800
uintptr_t __at(0x6a) font_bitmap_a;
uintptr_t __at(0x6c) font_bitmap_0;
void setup_text_mode() {
cv_set_screen_mode(CV_SCREENMODE_TEXT);
cv_set_image_table(IMAGE);
cv_set_character_pattern_t(PATTERN);
cvu_vmemset(0, 0, 0x4000);
cvu_memtovmemcpy(PATTERN, (void *)(font_bitmap_0 - '0'*8), 256*8);
}
void show_text() {
cv_set_colors(CV_COLOR_LIGHT_GREEN, CV_COLOR_BLACK);
cvu_vmemset(IMAGE, '.', 40*24);
cvu_memtovmemcpy(IMAGE + 1, "Hello Professor Falken", 22);
cv_set_screen_active(true);
}
void main() {
setup_text_mode();
show_text();
while (1);
}