Simons'Basic #2 to KickC

import "c64"
import "bitmap2"

const byte* SCREEN = $400;
const byte* BITMAP = $2000;

void main() {
    *BORDERCOL = LIGHT_GREY;
    *D011 = VIC_BMM|VIC_DEN|VIC_RSEL|3;
    vicSelectGfxBank(SCREEN);
    *D016 = VIC_CSEL;
    *D018 = toD018(SCREEN, BITMAP);

    bitmap_init(BITMAP,SCREEN);
    bitmap_clear(LIGHT_GREY,BLACK);
    for (word j = 0; j <= 200; j +=8) {
        bitmap_line(260,199,60,199-j);
        bitmap_line(60,0,j+60,199);
        bitmap_line(60,0,260,199-j);
        bitmap_line(260,199,j+60,0);
    }
    do {} while (true);
}