AMD K5

4-22 Performance
AMD-K5 Processor Technical Reference Manual 18524C/0—Nov1996
FIST int_16 0_1x_11011111_010_xxx M
ld 1/1
fpfill 1/2/5
fadd 1/2/5
st 1/5/6
FIST int_32 0_1x_11011011_010_xxx M
ld 1/1
fpfill 1/2/5
fadd 1/2/5
st 1/5/6
FISTP int_16 0_1x_11011111_011_xxx M
ld 1/1
fpfill 1/2/5
fadd 1/2/5
st 1/5/6
FISTP int_32 0_1x_11011011_011_xxx M
ld 1/1
fpfill 1/2/5
fadd 1/2/5
st 1/5/6
FISTP int_64 0_1x_11011111_111_xxx M
ld 1/1
ld 1/2
fpfill 1/2/5
fadd 1/2/5
st 2/3/6
st 2/4/7
FISUB int_16 0_1x_11011110_100_xxx M
ld 1/1
fpfill 1/3/7
fadd 1/3/7
fpfill 2/7/10
fadd 2/7/10
FISUB int_32 0_1x_11011010_100_xxx M
ld 1/1
fpfill 1/3/7
fadd 1/3/7
fpfill 2/7/10
fadd 2/7/10
FISUBR int_16 0_1x_11011110_101_xxx M
ld 1/1
fpfill 1/3/7
fadd 1/3/7
fpfill 2/7/10
fadd 2/7/10
Table 4-3. Floating-Point Instructions (continued)
Instruction Mnemonic Opcode Format
Fastpath or
Microcoded
Execution
Unit Timing