DESCRIPTION OF INSTRUCTIONS

54. MOV @Rr, data address (Move memory to indirect address)

 

 

 

7

 

 

 

 

 

 

 

 

 

0

 

Instruction code

:

 

1

 

0

 

1

 

0

0

1

1

r

Byte 1

 

 

 

7

 

 

 

 

 

 

 

 

 

0

 

Data address

 

a7

a6 a5 a4

a3

a2

a1

a0

Byte 2

Operation

: ((Rr))(data address)

r=0 or 1

 

 

 

Number of bytes

: 2

 

 

 

 

 

 

 

 

 

 

 

 

Number of cycles

: 2

 

 

 

 

 

 

 

 

 

 

 

 

Flags

:

 

C

AC

F0

RS1

RS0

OV

F1

P

 

(PSW)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Description

: The specified data address contents are copied to the data

 

 

memory location addressed by the register r contents.

Example MOV @R0, 0E0H

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

7

 

 

 

 

 

 

0

 

 

 

 

 

Instruction code

:

1

0

1

0

0

1

1

0

Byte 1

 

 

 

 

7

 

 

 

 

 

 

0

 

 

 

 

 

 

 

1

1

1

0

0

0

0

0

Byte 2

 

 

 

Before execution Accumulator

0

1

0

1

 

 

0

1

1

1

7

 

 

 

 

 

 

 

 

0

Register 0

 

 

 

 

0

1

1

1

 

 

0

0

1

0

7

 

 

 

 

 

 

 

 

0

72H

0 0 1 1 1 1 0 0

70

After execution Accumulator

0

1

0

1

 

 

0

1

1

1

7

 

 

 

 

 

 

 

 

0

Register 0

 

 

 

 

0

1

1

1

 

 

0

0

1

0

7

 

 

 

 

 

 

 

 

0

72H

0 1 0 1 0 1 1 1

70

313

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Image 320
Sonic Alert msm85c154hvs, msm83c154s, msm80154s user manual MOV @Rr, data address Move memory to indirect address, 313