omos-tcnj2024/sys/drv/vga/video.c

32 lines
483 B
C

#include <types.h>
#include <video.h>
void
vga_write(s8 *sequence, s32 size, s8 flags)
{
if (size > VGA_SIZE) {
s32 using_size = size - VGA_SIZE;
for (s32 i = 0; i <= VGA_SIZE; i++) {
vga_vidmem[i] = sequence[using_size + i];
}
return;
}
while (*sequence != '\0') {
vga_vidmem[unused++] = *sequence;
*sequence++;
vga_vidmem[unused++] = flags;
}
}
void
vga_clearscreen(void)
{
for (int i = 0; i <= VGA_SIZE; i++) {
vga_vidmem[i] = 0;
}
}