10. Additional Special Devices and Instructions

10-5

 Only the positive value of the content of

is valid. Be sure to use

32-bit data format to assign the

floating point format to perform the LN operation is necessary,

has to be converted to the floating point value.

 e

=S => content value of D operand= lnS ; S is the assigned source

data.

 (Zero flag, Carry flag, Overflow flag are valid and Error flag M1067,

M1068 read D1067, D1068)

 Program example:

RST M1081

DLN D10 D20

DEBCD D20 D30

DFLT D0 D10

Ϩʳ When M0 is ON, the data of (D0, D1) is converted to decimal of binary

number system and the result is stored in the (D10, D11) register.

Ϩʳ When M1 is ON, use (D10, D11) as real number to perform the LN

operation. The result is decimal of binary number system and will be

stored in the (D20, D21) register.

Ϩʳ When M2 is ON, the data of (D20, D21) is converted from binary to

decimal and the result is stored in (D30, D31) register. (At that time, the

result=D30 x 10

D31

)

126 LOG

S1 S2 D

Convert decimal of

binary number system

to perform logarithm

operation

Bit device Word device

Device

Operand

X Y M S K H KnX KnY KnM KnS T C D E F



: the base device for operation

: the source device for operation

: operation result device

 Use the content of

and

as operand to perform the LOG

operation and store the operation result in

device.

 Only the positive value of the content of

is valid (The positive and

negative values of cont ent of

are all valid). Be sure to use 32-bit

data format to assign the

point format to perform the LOG operation is necessary,

and

have to be converted to the floating point value.

=S2, obtain the value of D=>Log

When knowing S1=5,S2=125, obtain D=log

125

=S2=>5

=125=>D=log

125

 (Zero flag, Carry flag, Overflow flag are valid and Error flag M1067,

M1068 read D1067, D1068)

1 2 ... 139 140 141 142 143 144 145 146 147 148 149 150

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Cisco Systems OL-7765-04 manuales

Manuales del propietario y guías del usuario para Los conmutadores de red Cisco Systems OL-7765-04.
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Cisco systems OL-7765-04 Manual de usuario (10 paginas)

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Tabla de contenidos

Initial Switch Configuration

Connecting the Console Port

MDS 9216i

Verifying the Module Status

OL-7765-04