Maxim-integrated DS4830A Optical Microcontroller Manuel d'utilisateur télécharger pdf (Page 223)

DS4830A User’s Guide

223

RL / RLC Rotate Left Accumulator Carry Flag (Ex/In)clusive

Description: Rotates the active accumulator left by a single bit position. The RL instruction circulates the

msb of the accumulator (bit 15) back to the lsb (bit 0) while the RLC instruction includes the

Carry (C) flag in the circular left shift.

Status Flags: C (for RLC only), S, Z (for RLC only)

RL Operation: 15 Active Accumulator (Acc) 0

Acc.[15:1] Acc.[14:0]; Acc.0  Acc.15

Encoding: 15 0

1000

1010

0100

1010

Example(s): ; Acc = A345h, S=1, Z=0

RL ; Acc = 468Bh, S=0, Z=0

RL ; Acc = 8D16h, S=1, Z=0

RLC Operation: 15 Active Accumulator (Acc) 0 Carry Flag

Acc.[15:1] Acc.[14:0]; Acc.0  C; C  Acc.15

Encoding: 15 0

1000

1010

0101

1010

Example(s): ; Acc = A345h, C=1, S=1, Z=0

RLC ; Acc = 468Bh, C=1, S=0, Z=0

RLC ; Acc = 8D17h, C=0, S=1, Z=0

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Maxim-integrated DS4830A Optical Microcontroller Manuel d'utilisateur Page 223