DESCRIPTION OF INSTRUCTIONS

41. INC data address (Increment memory)

 

 

 

7

 

 

 

 

 

 

 

 

 

0

 

Instruction code

:

 

0

 

0

 

0

 

0

0

1

0

1

Byte 1

 

 

 

7

 

 

 

 

 

 

 

 

 

0

 

Data address

 

a7

a6

a5

a4

a3

a2

a1

a0

Byte 2

Operation

: (data address)(data address)+1

 

 

 

Number of bytes

: 2

 

 

 

 

 

 

 

 

 

 

 

 

Number of cycles

: 1

 

 

 

 

 

 

 

 

 

 

 

 

Flags

:

 

C

AC

F0

RS1

RS0

OV

F1

P

 

(PSW)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Description

: The specified data address contents are incremented by 1.

Example INC P1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

7

 

 

 

 

 

 

0

 

 

 

 

 

Instruction code

:

0

0

0

0

0

1

0

1

Byte 1

 

 

 

 

 

7

 

 

 

 

 

 

0

 

 

 

 

 

Data address

:

1

0

0

1

0

0

0

0

Byte 2

 

 

 

Before execution Port 1

0 0 0 0 1 1 1 1

70

After execution Port 1

0 0 0 1 0 0 0 0

70

293

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Sonic Alert msm83c154s, msm80154s, msm85c154hvs user manual INC data address Increment memory, 293