AMD AMD5K86 - Bitmap (IRB) Extension

AMD~
AMD5t!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 0
1 3
No IF~O
No
-
Change
CLI 1
0 1
0 No
No
VIF~O
-
Change
STI 1
0
1 3 No IF~ 1
No
-
Change
STI 1
0
1 0 No
No
VIF~l -
Change
PUSHF
1 0
1 3 No Pushed
Not
-
Pushed
PUSHF 1 0
1 0 No Pushed
Not
-
Pushed
PUSHFD
1 0
-
1 3 No
Pushed
Pushed
Protected
PUSHFD 1 0
-
1 0 No Pushed Pushed
Virtual
Not
Extensions
POPF
1 0
-
1 3
No
Popped
Popped
(PVI)1,2
Not Not
POPF 1
0
-
1 0 No
Popped Popped
POPFD 1
0 1 3 No
Popped
Not
-
Popped
POPFD 1 0 1 0 No
Not Not
-
Popped Popped
IF~ VIF~
IRETD 1 0
1
3
No
Return Return
-
Stack Stack
Image Image
IF~ VIF~
IRETD 1
0 1 0 No
Return Return
-
Stack Stack
Image Image
Notes:
I. All Virtual-8086 tasks run at CPL = 3.
2. INTn handlers and IRETO instrudions run at CPL = O. CP(O) if an attempt is made to set VIF when VIP = I.
- Not applicable.
3-20 SoftWare Environment and Extensions