Type						Description
dec	hex	bin
		8	4	2	1
		?	E	W	A	Data segment
0	0	0	0	0	0	Data	Read-Only
1	1	0	0	0	1	Data	Read-Only		Accessed
2	2	0	0	1	0	Data	Read/Write
3	3	0	0	1	1	Data	Read/Write		Accessed
4	4	0	1	0	0	Data	Read-Only	Expand-down
5	5	0	1	0	1	Data	Read-Only	Expand-down	Accessed
6	6	0	1	1	0	Data	Read/Write	Expand-down
7	7	0	1	1	1	Data	Read/Write	Expand-down	Accessed
		?	C	R	A	Code segment
8	8	1	0	0	0	Code	Execute-Only
9	9	1	0	0	1	Code	Execute-Only		Accessed
10	a	1	0	1	0	Code	Execute/Read
11	b	1	0	1	1	Code	Execute/Read		Accessed
12	c	1	1	0	0	Code	Execute-Only	Conforming
13	d	1	1	0	1	Code	Execute-Only	Conforming	Accessed
14	e	1	1	1	0	Code	Execute/Read	Conforming
15	f	1	1	1	1	Code	Execute/Read	Conforming	Accessed
		¿				System Segment
						32-bit Mode		IA-32e Mode
0	0	0	0	0	0	Reserved		Reserved (extension of descriptor to 64 bits)
1	1	0	0	0	1	16-bit TSS	Available	Reserved
2	2	0	0	1	0	LDT
3	3	0	0	1	1	16-bit TSS	Busy	Reserved
4	4	0	1	0	0	16-bit Call Gate		Reserved
5	5	0	1	0	1	Task Gate		Reserved
6	6	0	1	1	0	16-bit Interrupt Gate		Reserved
7	7	0	1	1	1	16-bit Trap Gate		Reserved
8	8	1	0	0	0	Reserved		Reserved
9	9	1	0	0	1	32-bit TSS	Available	64-bit TSS	Available
10	a	1	0	1	0	Reserved
11	b	1	0	1	1	32-bit TSS	Busy	64-bit TSS	Busy
12	c	1	1	0	0	32-bit Call Gate		64-bit Call Gate
13	d	1	1	0	1	Reserved		Reserved
14	e	1	1	1	0	32-bit Interrupt Gate		64-bit Interrupt Gate
15	f	1	1	1	1	32-bit Trap Gate		64-bit Trap Gate