Управляющий блок дискового буфера BCB
/* Таблица файлов DOS */
typedef struct _DFT_ { struct _DFT_ far *next; unsigned file_count; DFCB dfcb; } DFT;
/* Управляющий блок дискового буфера BCB */
typedef struct _BCB_ { struct _BCB_ far *next; unsigned char drive; unsigned char flag; unsigned sect_num; unsigned reserv1; DDCB far *ddcb; unsigned reserv2; } BCB;
/* Информация о диске */
typedef struct _DINFO_ { char path[64]; unsigned reserv1; unsigned reserv2; unsigned char reserv3; DDCB far *ddcb; unsigned cdir_clu; unsigned reserv4; unsigned reserv5; unsigned reserv6; unsigned char reserv7[7]; } DINFO;
/* Заголовок EXE-программы */
typedef struct _EXE_HDR_ { unsigned signature; unsigned part_pag; unsigned file_size; unsigned rel_item; unsigned hdr_size; unsigned min_mem; unsigned max_mem; unsigned ss_reg; unsigned sp_reg; unsigned chk_summ; unsigned ip_reg; unsigned cs_reg; unsigned relt_off; unsigned overlay; } EXE_HDR;
/* таблица расположения сегментов EXE-программы */
typedef struct _RELOC_TAB_ { unsigned offset; unsigned segment; } RELOC_TAB;
/* конфигурация дисковой подсистемы */
typedef struct _DISK_CONFIG_ { int n_floppy; int n_hard; int t_floppy1; int t_floppy2; int t_hard1; int t_hard2; } DISK_CONFIG;
/* таблица параметров дискеты */
typedef struct _DPT_ { unsigned char srt_hut; unsigned char dma_hlt; unsigned char motor_w; unsigned char sec_size; unsigned char eot; unsigned char gap_rw; unsigned char dtl; unsigned char gap_f; unsigned char fill_char; unsigned char hst; unsigned char mot_start; } DPT;
/* таблица параметров диска */
typedef struct _HDPT_ { unsigned max_cyl; unsigned char max_head; unsigned srwcc; unsigned swpc; unsigned char max_ecc; unsigned char dstopt; unsigned char st_del; unsigned char fm_del; unsigned char chk_del; unsigned char reserve[4]; } HDPT;
/* Элемент таблицы разделов */
typedef struct _PART_ENTRY_ { unsigned char flag; unsigned char beg_head; unsigned beg_sec_cyl; unsigned char sys; unsigned char end_head; unsigned end_sec_cyl; unsigned long rel_sec; unsigned long size; } PART_ENTRY;
