IBM 5170 Technical Reference page 340

STR
=
Store Task Register to Register Memory
00001111
LMSW
=
Load Machine Status Word from Register Memory
00001111
SMSW
=
Store Machine Status Word
Store Machine Status Word
I
00001111
I
00000001
I
mod100
rim
LAR
=
Load Access Rights from Register Memory
Load Access Rights from Register Memory
I
00001111
I
00000010
I
mod reg
rim
LSL
=
Load Segmerit Limit from Register Memory
Load Segment Limit from Register Memory
I
00001111
I
00000011
I
mod reg
rim
ARPL = Adjust Requested Privilege Level from Register Memory
Adjust Requested Privilege Level from Register Memory
I
01100011
I
mod reg
rim
VERR
=
Verify Read Access; Register Memory
Verify Read Access; Register Memory
I
00001111
I
00000000
I
mod100
rim
VERR
=
Verify Write Access
Verify Write Access
I
00001111
I
00000000
I
mod101
rim
Note: The effective address (EA) of the memory operand is
computed according to the mod and
rim
fields:
If mod
=
11, then
rim
is treated as a reg field.
If mod
=
00, then disp
=
0, disp-low and disp-high are absent.
6-22 Instruction Set