HTG12N0 datasheet(23/30 Pages) HOLTEK

23 / 30 page

JNZ Rn,address

Jump if register is not zero

Machine Code

1 0 1 0 0 a a a

a a a a a a a a R0

1 0 1 0 1 a a a

a a a a a a a a R1

1 1 0 1 1 a a a

a a a a a a a a R4

Description

Bits 0~10 of the program counter are replaced with the directly–specified

address, bit 11 of the program counter and PA3 of the memory bank re-

main, if the register is not zero.

Operation

PC (bit 0~10)

← address, if Rn≠0; Rn=R0,R1,R4

← PC+2, if Rn=0

JTMR address

Jump if time–out

Machine Code

1 1 0 1 0 a a a

a a a a a a a a

Description

Bits 0~10 of the program counter are replaced with the directly–specified

address, bit 11 of the program counter and PA3 of the memory bank re-

main, if the TF (Timer flag) is set to one.

Operation

PC (bit 0~10)

← address, if TF=1

← PC+2, if TF=0

JZ A,address

Jump if accumulator is zero

Machine Code

1 0 1 1 0 a a a

a a a a a a a a

Description

Bits 0~10 of the program counter are replaced with the directly–specified

address, bit 11 of the program counter and PA3 of the memory bank re-

main, if the accumulator is zero.

Operation

PC (bit 0~10)

← address, if ACC=0

← PC+2, if ACC≠0

MOV A,Rn

Move register to accumulator

Machine Code

0 0 1 0 n n n 1

Description

Data in the working register “Rn” is moved to the accumulator.

Operation

ACC

← Rn; Rn=R0,R1,R2,R3,R4, for nnn=0,1,2,3,4

MOV A,TMRH

Move timer to accumulator

Machine Code

0 0 1 1 1 0 1 1

Description

The high nibble data of the Timer counter is loaded to the accumulator.

Operation

ACC

← TIMER (high nibble)

MOV A,TMRL

Move timer to accumulator

Machine Code

0 0 1 1 1 0 1 0

Description

The low nibble data of the Timer counter is loaded to the accumulator.

Operation

ACC

← TIMER (low nibble)

HTG12N0

18th Mar ’99

HTG12N0 датащи(PDF) 23 Page - Holtek Semiconductor Inc

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