#define lance_width 32
#define lance_height 32
-static char lance_bits[] = {
+static unsigned char lance_bits[] = {
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xc0,0x01,
0x00,0x00,0x30,0x06,0x00,0x00,0x0c,0x18,0x00,0x00,0x03,0x60,0x00,0x80,0x00,
0x87,0x00,0x80,0xf0,0x87,0x01,0x80,0x80,0x81,0x01,0x40,0xfe,0x3f,0x01,0x40,