AMD AMD5K86 - Page 73

AMD~
AMD5,!J6 Processor Technical Reference Manual
18524B/O-Mar1996
TABLE 3-5. Instructions that Modify the IF or VIF Flags (continued)
Mode TYPE
PE VM VME PVI IOPL
GP(O)
IF VIF
CLI 1 1
0
-
~CPL
No
IF f-- 0
-
CLI 1 1
0 <CPL Yes
No
-
Change
-
STI
1
1 0
-
~CPL No IF f-- 1
-
STI 1 1
0 <CPL Yes
No
-
Change
-
PUSHF 1 1
0
~CPL No
No
-
Change
-
PUSHF 1
1
0 <CPL Yes
No
386
Virtual-
-
Change
-
8086 Model
IF f--
POPF
1 1
0
-
~CPL No Stack
-
Image
POPF 1
1
0 <CPL Yes
No
-
Change
-
IF f--
IRETD
1 1
0
-
~CPL No Stack
-
Image
IRETD 1 1
0 <CPL Yes
No
-
Change
-
Notes:
I. All Virtual-BOB6 tasks run at (PL = 3.
2. INTn handlers and IRETO instrudions run at (PL = O. CP(O) if an attempt is made to set VIF when VIP = I.
- Not applicable.
3-18
Software Environment and Extensions