HTG12N0 datasheet(28/30 Pages) HOLTEK

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RLC A

Rotate accumulator left through carry

Machine Code

0 0 0 0 0 0 1 1

Description

The contents of the accumulator are rotated left one bit. Bit 3 replaces the

carry bit; the carry bit is rotated into the bit 0 position.

Operation

An+1

← An; An: Accumulator bit n (n=0,1,2)

← C

← A3

RR A

Rotate accumulator right

Machine Code

0 0 0 0 0 0 0 0

Description

The contents of the accumulator are rotated right one bit. Bit 0 is rotated

to bit 3 and carry flag.

Operation

← An+1; An: Accumulator bit n (n=0,1,2)

← A0

RRC A

Rotate accumulator right through carry

Machine Code

0 0 0 0 0 0 1 0

Description

The contents of the accumulator are rotated right one bit. Bit 0 replaces

the carry bit; the carry bit is rotated into the bit 3 position.

Operation

← An+1; An: Accumulator bit n (n=0,1,2)

← C

← A0

SBC A,[R1R0]

Subtract data memory contents and carry from ACC

Machine Code

0 0 0 0 1 0 1 0

Description

The contents of the data memory addressed by the register pair “R1,R0”

and the carry are subtracted from the accumulator. Carry is affected.

Operation

ACC

← ACC+M(R1,R0)+CF

SOUND A

Active SOUND channel with accumulator

Machine Code

0 1 0 0 1 0 1 1

Description

The activated sound begins playing in accordance with the contents of the

accumulator when the specified sound channel is matched.

SOUND LOOP

Turn on sound repeat mode

Machine Code

0 1 0 0 1 0 0 1

Description

The activated sound plays repeatedly.

SOUND OFF

Turn off sound

Machine Code

0 1 0 0 1 0 1 0

Description

The singing sound will terminate immediately.

HTG12N0

18th Mar ’99

HTG12N0 датащи(PDF) 28 Page - Holtek Semiconductor Inc

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