Rainbow-electronics HT49R70A-1 Manual do Utilizador descarregar pdf (Página 35)

RLC [m] Rotate data memory left through carry

Description The contents of the specified data memory and the carry flag are rotated 1 bit left. Bit 7 re

places the carry bit; the original carry flag is rotated into the bit 0 position.

Operation

[m].(i+1) ¬ [m].i; [m].i:bit i of the data memory (i=0~6)

[m].0 ¬ C

C ¬ [m].7

Affected flag(s)

TC2 TC1 TO PD OV Z AC C

¾¾¾¾¾¾¾ Ö

RLCA [m] Rotate left through carry and place result in the accumulator

Description Data in the specified data memory and the carry flag are rotated 1 bit left. Bit 7 replaces the

carry bit and the original carry flag is rotated into bit 0 position. The rotated result is stored

in the accumulator but the contents of the data memory remain unchanged.

Operation

ACC.(i+1) ¬ [m].i; [m].i:bit i of the data memory (i=0~6)

ACC.0 ¬ C

C ¬ [m].7

Affected flag(s)

TC2 TC1 TO PD OV Z AC C

¾¾¾¾¾¾¾ Ö

RR [m] Rotate data memory right

Description The contents of the specified data memory are rotated 1 bit right with bit 0 rotated to bit 7.

Operation

[m].i ¬ [m].(i+1); [m].i:bit i of the data memory (i=0~6)

[m].7 ¬ [m].0

Affected flag(s)

TC2 TC1 TO PD OV Z AC C

¾¾¾¾¾¾¾¾

RRA [m] Rotate right and place result in the accumulator

Description Data in the specified data memory is rotated 1 bit right with bit 0 rotated into bit 7, leaving

the rotated result in the accumulator. The contents of the data memory remain unchanged.

Operation

ACC.(i) ¬ [m].(i+1); [m].i:bit i of the data memory (i=0~6)

ACC.7 ¬ [m].0

Affected flag(s)

TC2 TC1 TO PD OV Z AC C

¾¾¾¾¾¾¾¾

RRC [m] Rotate data memory right through carry

Description The contents of the specified data memory and the carry flag are together rotated 1 bit

right. Bit 0 replaces the carry bit; the original carry flag is rotated into the bit 7 position.

Operation

[m].i ¬ [m].(i+1); [m].i:bit i of the data memory (i=0~6)

[m].7 ¬ C

C ¬ [m].0

Affected flag(s)

TC2 TC1 TO PD OV Z AC C

¾¾¾¾¾¾¾ Ö

HT49R70A-1

Rev. 1.00 35 December 4, 2001

1 2 ... 30 31 32 33 34 35 36 37 38 39 40 41

HT49R70A-1 1
8-Bit LCD Type OTP MCU 1

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