AMD AMD5K86 - Page 118

AMD~
18524B/O-Mar1996
AMD5IJ6 Processor Technical Reference Manual
TABLE 4-3. Floating-Point Instructions (continued)
Instruction Mnemonic
Opcode Format
FSUBR ST, ST(i)
FSUBR ST(i), ST
FSUBRP ST(i), ST
FTST
FUCOMST(i)
FUCOMP ST(i)
FUCOMPP
FWAIT
EXAM
FXCH ST(i)
FXTRACT
Dispatch and Execution Timing
Fastpath or
Microcoded
F
F
F
M
F
F
F
F
F
F
F
F
M
Execution
Unit Timing
fpfill 1/2/5
fadd 112/5
fpfill 1/2/5
fadd 1/2/5
Id 1/1
fpfill 1/3/6
fadd 113/6
Id 111
Id 1/2
fpfill 1/4/7
fadd 1/417
fpfill
fadd
fpfill
fmv
112/5
112/5
112/4
112/4
fpfill 1/2/4
fmv 11214
fpfill 1/2/4
fmv 11214
nap 111
fpfill 1/2/4
fmv 11214
nap 111
alu 1/1
fpfill 1/2/4
fmv 11214
brn
fpfill
fmv
fpfill
fadd
fpfill
fmv
111
1/2/4
1/2/4
2/3/11
2/3/11
3/4/6
3/4/6
4-25