This structure describes the header of an object file in Digital Research format:
typedef struct
{
int16_t magic; /* Magical value: 0x601a */
int32_t tsize; /* Size of the TEXT segment */
int32_t dsize; /* Size of the DATA segment */
int32_t bsize; /* Size of the BSS */
int32_t ssize; /* Size of the symbol table */
int8_t reserved[10]; /* Reserved, set to zero */
} OHEADER;