Sonic Alert msm85c154hvs, msm83c154s RL a Rotate accumulator left, 349, RS1 RS0 OV F1 P PSW

Models: msm83c154s msm85c154hvs msm80154s

1 378
Download 378 pages 26.51 Kb
Page 356
Image 356

DESCRIPTION OF INSTRUCTIONS

90. RL A (Rotate accumulator left)

Instruction code

:

Operation

:

7

 

 

 

 

 

 

 

 

0

 

 

0

0

 

1 0

 

0

0 1 1

Byte 1

 

 

 

Accumulator

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

7

 

 

 

 

 

0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Number of bytes

: 1

 

 

 

 

 

 

 

 

 

Number of cycles

: 1

 

 

 

 

 

 

 

 

 

Flags

:

 

C

AC

F0

RS1

RS0 OV F1 P

(PSW)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Description

 

 

 

 

 

 

 

 

 

 

: All accumulator bits are shifted by one bit to the left. The MSB

 

 

(bit 7) is shifted to the LSB bit position (bit 0).

Example RL A

 

 

 

 

 

 

 

 

 

 

 

 

7

 

 

 

0

 

 

 

 

 

Instruction code

:

0

0

1 0

0 0

1 1

Byte 1

Before execution Accumulator

1 0 0 1 0 1 1 0

70

After execution Accumulator

0 0 1 0 1 1 0 1

70

349

Page 356
Image 356
Sonic Alert msm85c154hvs, msm83c154s, msm80154s user manual RL a Rotate accumulator left, 349, RS1 RS0 OV F1 P PSW