AMD AMD5K86 - Page 117

AMD~
AMD5~6 Processor Technical Reference Manual
TABLE 4-3. Floating-Point Instructions (continued)
Instruction Mnemonic Opcode Format
FSCALE
FST ST(i)
FSTP ST(i)
FSUB ST, ST(i)
FSUB ST(i), ST
FSUB reaC64
FSUBP ST(i), ST
4-24
Fastpath or
Microcoded
F
M
F
M
M
M
F
F
F
F
M
F
1 8524B/O-Marl 996
Execution
Unit Timing
fpfiIl 1/2/8
fadd 1/2/8
ld
1/1
fpfiIl 1/2/4
fmv
112/4
st 112/5
fpfiIl 112/4
fmv 1/2/4
ld
fpfiIl
fmv
st
ld
ld
fpfiIl
fmv
st
st
ld
ld
fpfiIl
fmv
st
st
1/1
1/2/4
1/2/4
1/2/5
111
1/2
1/2/4
1/2/4
2/3/5
2/4/6
1/1
1/2
1/2/4
112/4
2/3/5
2/4/6
fpfiIl
112/4
fmv 112/4
fpfiIl
fadd
fpfiIl
fadd
ld
fpfiIl
fadd
ld
ld
fpfiIl
fadd
fpfiIl
fadd
112/5
1/2/5
1/2/5
1/2/5
1/1
113/6
1/3/6
111
1/2
114/7
1/4/7
1/2/5
112/5
Performance