共用体定義書

typedef union

No.	名称	属性	説明
1	dpt_t
	max_cyl	hd_dpt uint16_t	Max cylinder
	max_head	uint8_t	Max head
	junk1[5]	uint8_t	Obsolete junk, leave at zero
	ctrl	uint8_t	Control byte
	junk2[7]	uint8_t	More obsolete junk
	hd
	specify1	fd_dpt uint8_t	"First specify byte"
	specify2	uint8_t	"Second specify byte"
	delay	uint8_t	Delay until motor turn off
	sectors	uint8_t	Sectors/track
	bps	uint8_t	Bytes/sector (02h = 512)
	isgap	uint8_t	Length of intersector gap
	dlen	uint8_t	Data length (0FFh)
	fgap	uint8_t	Formatting gap
	ffill	uint8_t	Format fill byte
	settle	uint8_t	Head settle time (ms)
	mstart	uint8_t	Motor start time
	maxtrack	uint8_t	Maximum track number
	rate	uint8_t	Data transfer rate
	cmos	uint8_t	CMOS type
	pad[2]	uint8_t
	old_fd_dpt	uint32_t	Extension: pointer to old INT 1Eh
	fd

dpt_t