CLOFSET X CLSIZE X NBPG X PAGRND X PAGSIZ X PGOFSET X
1: #define NBPG 512 2: #define PGOFSET 511 3: #define CLSIZE 2 4: #define CLOFSET 1023 5: #define PAGSIZ 512 6: #define PAGRND ((PAGSIZ)-1)
