MSM80C154S/83C154S/85C154HVS

85. ORL data address, A (Logical OR accumulator to memory)

 

 

 

7

 

 

 

 

 

 

 

 

 

 

0

 

Instruction code

:

 

0

 

1

 

0

 

0

 

0

0

1

0

Byte 1

 

 

 

7

 

 

 

 

 

 

 

 

 

 

0

 

Data address

 

a7

a6 a5 a4

 

a3 a2 a1

a0

Byte 2

Operation

: (data address)(data address) OR (A)

 

 

Number of bytes

: 2

 

 

 

 

 

 

 

 

 

 

 

 

 

Number of cycles

: 1

 

 

 

 

 

 

 

 

 

 

 

 

 

Flags

:

 

C

AC

F0

RS1

RS0

OV

F1

P

 

(PSW)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Description

 

 

 

 

 

 

 

 

 

 

: The logical OR between the accumulator and the specified data

 

 

address contents is determined. The result is placed in the

 

 

specified data address.

 

 

 

 

 

Example ORL 50H, A

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

7

 

 

 

 

 

 

0

 

 

 

 

 

 

Instruction code

:

0

1

0

0

0

0

1

0

 

Byte 1

 

 

 

 

7

 

 

 

 

 

 

0

 

 

 

 

 

 

 

 

0

1

0

1

0

0

0

0

 

Byte 2

 

 

 

Before execution Accumulator

1 0 0 0 1 1 1 1

70

50H

0 0 1 0 0 1 0 1

70

After execution Accumulator

1 0 0 0 1 1 1 1

70

50H

1 0 1 0 1 1 1 1

70

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Sonic Alert msm83c154s, msm80154s, msm85c154hvs user manual 344