HelenOS sources

D_FIRST           283 uspace/app/tetris/screen.c 	bp = &board[D_FIRST * B_COLS];
D_FIRST           284 uspace/app/tetris/screen.c 	sp = &curscreen[D_FIRST * B_COLS];
D_FIRST           285 uspace/app/tetris/screen.c 	for (j = D_FIRST; j < D_LAST; j++) {
D_FIRST           263 uspace/dist/src/c/demos/tetris/screen.c 	bp = &board[D_FIRST * B_COLS];
D_FIRST           264 uspace/dist/src/c/demos/tetris/screen.c 	sp = &curscreen[D_FIRST * B_COLS];
D_FIRST           265 uspace/dist/src/c/demos/tetris/screen.c 	for (j = D_FIRST; j < D_LAST; j++) {
HelenOS homepage, sources at GitHub