Intel Itanium 9150M, Manual, Page: 327 / 420

3:318 Volume 3: Instruction Formats
4.3.3.2 Test NaT
I17
4.3.4 Miscellaneous I-Unit Instructions
The miscellaneous I-unit instructions are encoded in major opcode 0 using a 3-bit
opcode extension field (x
3
) in bits 35:33. Some also have a 6-bit opcode extension field
(x
6
) in bits 32:27. Table 4-24 shows the 3-bit assignments and Table 4-25 summarizes
the 6-bit assignments.
40 37 36 35 34 33 32 27 26 20 19 18 14 13 12 11 6 5 0
5 t
b
x
2
t
a
p
2
r
3
x y c p
1
qp
4 1 2 1 6 7 1 5 1 1 6 6
Instruction Operands Opcode
Extension
x
2
t
a
t
b
y x c
tnat.z
p
1
, p
2
= r
3
5 0
0
0
1 0
0
tnat.z.unc 1
tnat.z.and
1
0
tnat.nz.and 1
tnat.z.or
1
0
0
tnat.nz.or 1
tnat.z.or.andcm
1
0
tnat.nz.or.andcm 1
Table 4-24. Misc I-Unit 3-bit Opcode Extensions
Opcode
Bits 40:37
x
3
Bits 35:33
0
0 6-bit Ext ( Table 4-25 )
1 chk.s.i – int I20
2 mov to pr.rot – imm
44
I24
3 mov to pr I23
4
5
6
7
mov to b I21