
80
Software Environment
Chapter 3
AMD-K6-2E+ Embedded Processor Data Sheet
23542A/0—September 2000
Preliminary Information
STC
STD
STI
STOSB mem8, AL
STOSW mem16, AX
STOSD mem32, EAX
STR mreg16
STR mem16
SUB mreg8, reg8
SUB mem8, reg8
SUB mreg16/32, reg16/32
SUB mem16/32, reg16/32
SUB reg8, mreg8
SUB reg8, mem8
SUB reg16/32, mreg16/32
SUB reg16/32, mem16/32
SUB AL, imm8
SUB EAX, imm16/32
SUB mreg8, imm8
SUB mem8, imm8
SUB mreg16/32, imm16/32
SUB mem16/32, imm16/32
SUB mreg16/32, imm8 (signed ext.)
SUB mem16/32, imm8 (signed ext.)
SYSCALL
SYSRET
TEST mreg8, reg8
TEST mem8, reg8
TEST mreg16/32, reg16/32
TEST mem16/32, reg16/32
TEST AL, imm8
TEST EAX, imm16/32
TEST mreg8, imm8
TEST mem8, imm8
TEST mreg16/32, imm16/32
F9h
FDh
FBh
AAh
ABh
ABh
0Fh
0Fh
28h
28h
29h
29h
2Ah
2Ah
2Bh
2Bh
2Ch
2Dh
80h
80h
81h
81h
83h
83h
0Fh
0Fh
84h
84h
85h
85h
A8h
A9h
F6h
F6h
F7h
vector
vector
vector
long
long
long
vector
vector
short
long
short
long
short
short
short
short
short
short
short
long
short
long
short
long
vector
vector
short
vector
short
vector
long
long
long
long
long
store, alux
store, alux
store, alux
00h
00h
11-001-xxx
mm-001-xxx
11-xxx-xxx
mm-xxx-xxx
11-xxx-xxx
mm-xxx-xxx
11-xxx-xxx
mm-xxx-xxx
11-xxx-xxx
mm-xxx-xxx
alux
load, alux, store
alu
load, alu, store
alux
load, alux
alu
load, alu
alux
alu
alux
load, alux, store
alu
load, alu, store
alux
load, alux, store
11-101-xxx
mm-101-xxx
11-101-xxx
mm-101-xxx
11-101-xxx
mm-101-xxx
05h
07h
11-xxx-xxx
mm-xxx-xxx
11-xxx-xxx
mm-xxx-xxx
alux
alu
alux
alu
alux
load, alux
alu
11-000-xxx
mm-000-xxx
11-000-xxx
Table 12. Integer Instructions (continued)
Instruction Mnemonic
First
Byte
Second
Byte
ModR/M
Byte
Decode
Type
RISC86
Operations