/* for (x = 0; x < 48; x++) for (y = 0; y < 32; y++) vmu_flip_bit(bitmap, x, y); }  */
void vmu_set_bit(uint8 bitmap[192], uint8 x, uint8 y)
/* for (x = 0; x < 48; x++) for (y = 0; y < 32; y++) vmu_flip_bit(bitmap, x, y); }  */
void vmu_set_bit(uint8 bitmap[192], uint8 x, uint8 y)
{
	if (x < 48 && y < 32)
		bitmap[6*(31-y)+(5-(x/8))] |= (1 << (x%8));
}