GXM datasheet(225/244 Pages) NSC

225 / 244 page

Revision 3.1

225

www.national.com

Instruction Set (Continued)

Table 9-29. FPU Instruction Set Summary

FPU Instruction

Opcode

Operation

Clock

Count

Notes

F2XM1 Function Evaluation 2x-1

D9 F0

TOS <--- 2TOS-1

92 - 108

FABS Floating Absolute Value

D9 E1

TOS <--- | TOS |

FADD Floating Point Add

TopofStack

DC [11000 n]

ST(n)<--- ST(n) + TOS

4- 9

80-bit Register

D8 [1100 0 n]

TOS <--- TOS + ST(n)

4 - 9

64-bit Real

DC [mod 000 r/m]

TOS <--- TOS + M.DR

4 - 9

32-bit Real

D8 [mod 000 r/m]

TOS <--- TOS + M.SR

4 - 9

FADDP Floating Point Add, Pop

DE [1100 0 n]

ST(n) <--- ST(n) + TOS; then pop TOS

FIADD Floating Point Integer Add

32-bit integer

DA [mod 000 r/m]

TOS <--- TOS + M.SI

8 - 14

16-bit integer

DE [mod 000 r/m]

TOS <--- TOS + M.WI

8 - 14

FCHS Floating Change Sign

D9 E0

TOS <--- - TOS

FCLEX Clear Exceptions

(9B) DB E2

Wait then Clear Exceptions

FNCLEX Clear Exceptions

DB E2

Clear Exceptions

FCMOVB Floating Point Conditional Move if

Below

DA [1100 0 n]

If (CF=1) ST(0) <--- ST(n)

FCMOVE Floating Point Conditional Move if

Equal

DA [1100 1 n]

If (ZF=1) ST(0) <--- ST(n)

FCMOVBE Floating Point Conditional Move if

Below or Equal

DA [1101 0 n]

If (CF=1 or ZF=1) ST(0) <--- ST(n)

FCMOVU Floating Point Conditional Move if

Unordered

DA [1101 1 n]

If (PF=1) ST(0) <--- ST(n)

FCMOVNB Floating Point Conditional Move if

Not Below

DB [1100 0 n]

If (CF=0) ST(0) <--- ST(n)

FCMOVNE Floating Point Conditional Move if

Not Equal

DB [1100 1 n]

If (ZF=0) ST(0) <--- ST(n)

FCMOVNBE Floating Point Conditional Move if

Not Below or Equal

DB [1101 0 n]

If (CF=0 and ZF=0) ST(0) <--- ST(n)

FCMOVNU Floating Point Conditional Move if

Not Unordered

DB [1101 1 n]

If (DF=0) ST(0) <--- ST(n)

FCOM Floating Point Compare

80-bit Register

D8 [1101 0 n]

CC set by TOS - ST(n)

64-bit Real

DC [mod 010 r/m]

CC set by TOS - M.DR

32-bit Real

D8 [mod 010 r/m]

CC set by TOS - M.SR

FCOMP Floating Point Compare, Pop

80-bit Register

D8 [1101 1 n]

CC set by TOS - ST(n); then pop TOS

64-bit Real

DC [mod 011 r/m]

CC set by TOS - M.DR; then pop TOS

32-bit Real

D8 [mod 011 r/m]

CC set by TOS - M.SR; then pop TOS

FCOMPP Floating Point Compare, Pop

Two Stack Elements

DE D9

CC set by TOS - ST(1); then pop TOS and

ST(1)

FCOMI Floating Point Compare Real and Set EFLAGS

80-bit Register

DB [1111 0 n]

EFLAG set by TOS - ST(n)

FCOMIP Floating Point Compare Real and Set EFLAGS, Pop

80-bit Register

DF [1111 0 n]

EFLAG set by TOS - ST(n); then pop TOS

FUCOMI Floating Point Unordered Compare Real and Set EFLAGS

80-bit Integer

DB [1110 1 n]

EFLAG set by TOS - ST(n)

9 - 10

FUCOMIP Floating Point Unordered Compare Real and Set EFLAGS, Pop

80-bit Integer

DF [1110 1 n]

EFLAG set by TOS - ST(n); then pop TOS

9 - 10

FICOM Floating Point Integer Compare

32-bit integer

DA [mod 010 r/m]

CC set by TOS - M.WI

9 - 10

16-bit integer

DE [mod 010 r/m]

CC set by TOS - M.SI

9 - 10

FICOMP Floating Point Integer Compare, Pop

32-bit integer

DA [mod 011 r/m]

CC set by TOS - M.WI; then pop TOS

9 - 10

16-bit integer

DE [mod 011 r/m

CC set by TOS - M.SI; then pop TOS

9 - 10

GXM датащи(PDF) 225 Page - National Semiconductor (TI)

GXM датащи(HTML) 225 Page - National Semiconductor (TI)

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

датащи скачать

ссылки URL