DESCRIPTION OF INSTRUCTIONS

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

 

 

 

7

 

 

 

 

 

 

 

 

 

0

 

Instruction code

:

 

1

 

0

 

0

 

0

0

1

1

r

Byte 1

 

 

 

7

 

 

 

 

 

 

 

 

 

0

 

Data address

 

a7

a6 a5 a4

a3

a2

a1

a0

Byte 2

Operation

: (data address)((Rr))

r=0 or 1

 

 

 

Number of bytes

: 2

 

 

 

 

 

 

 

 

 

 

 

 

Number of cycles

: 2

 

 

 

 

 

 

 

 

 

 

 

 

Flags

:

 

C

AC

F0

RS1

RS0

OV

F1

P

 

(PSW)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Description

: The data memory location contents addressed by the register r

 

 

contents are copied to the specified data address.

Example MOV ACC, @R1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

7

 

 

 

 

 

 

0

 

 

 

 

 

Instruction code

:

1

0

0

0

0

1

1

1

Byte 1

 

 

 

 

7

 

 

 

 

 

 

0

 

 

 

 

 

 

 

1

1

1

0

0

0

0

0

Byte 2

 

 

 

Before execution Accumulator

0

0

0

0

 

 

0

0

0

0

7

 

 

 

 

 

 

 

 

0

Register 1

 

 

 

 

0

0

1

0

 

 

0

1

0

1

7

 

 

 

 

 

 

 

 

0

25H

0 1 1 0 1 1 1 1

70

After execution Accumulator

0

1

1

0

 

 

1

1

1

1

7

 

 

 

 

 

 

 

 

0

Register 1

 

 

 

 

0

0

1

0

 

 

0

1

0

1

7

 

 

 

 

 

 

 

 

0

25H

0 1 1 0 1 1 1 1

70

325

Page 332
Image 332
Sonic Alert msm85c154hvs, msm83c154s, msm80154s user manual MOV data address, @Rr Move indirect address to memory, 325