Sonic Alert msm85c154hvs, msm83c154s, msm80154s user manual 340

Models: msm83c154s msm85c154hvs msm80154s

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MSM80C154S/83C154S/85C154HVS

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

 

 

 

7

 

 

 

 

 

 

 

 

 

0

 

Instruction code

:

 

0

 

1

 

0

 

0

0

1

0

1

Byte 1

 

 

 

7

 

 

 

 

 

 

 

 

 

0

 

Data address

 

a7

a6

a5

a4

a3 a2 a1

a0

Byte 2

Operation

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

 

 

 

 

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 contents and the

 

 

specified data address contents is determined. The result is

 

 

placed in the accumulator and the flag is updated.

Example ORL A, 33H

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

7

 

 

 

 

 

 

0

 

 

 

 

 

Instruction code

:

0

1

0

0

0

1

0

1

Byte 1

 

 

 

 

7

 

 

 

 

 

 

0

 

 

 

 

 

 

 

0

0

1

1

0

0

1

1

Byte 2

 

 

 

Before execution Accumulator

0 1 0 1 1 1 1 0

70

33H

1 0 1 0 0 1 0 1

70

After execution Accumulator

1 1 1 1 1 1 1 1

70

33H

1 0 1 0 0 1 0 1

70

340

Page 347
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Sonic Alert msm85c154hvs, msm83c154s, msm80154s user manual 340