GMS87C1404 데이터 시트보기 (PDF) - Hyundai Micro Electronics

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GMS87C1404

CMOS SINGLE-CHIP 8-BIT MICROCONTROLLER

Hyundai Micro Electronics 

HYUNDAI MicroElectronics

GMS87C1404/GMS87C1408

6. CONTROL OPERATION & etc.

NO.

MNEMONIC

1 BRK

2 DI

3 EI

4 NOP

5 POP A

6 POP X

7 POP Y

8 POP PSW

9 PUSH A

10 PUSH X

11 PUSH Y

12 PUSH PSW

13 RET

14 RETI

15 STOP

OP BYTE CYCLE

CODE NO NO

0F

1

8

60

1

3

OPERATION

FLAG

NVGBHIZC

Software interrupt : B ← ”1”, M(sp) ← (pcH), sp ←sp-1,

M(s) ← (pcL), sp ← sp - 1, M(sp) ← (PSW), sp ← sp -1, ---1-0--

pcL ← ( 0FFDEH ) , pcH ← ( 0FFDFH) .

Disable interrupts : I ← “0”

-----0--

E0

1

3 Enable interrupts : I ← “1”

-----1--

FF

1

2 No operation

--------

0D 1

4 sp ← sp + 1, A ← M( sp )

2D 1

4 sp ← sp + 1, X ← M( sp )

--------

4D 1

4 sp ← sp + 1, Y ← M( sp )

6D 1

4 sp ← sp + 1, PSW ← M( sp )

restored

0E

1

4 M( sp ) ← A , sp ← sp - 1

2E

1

4E

1

4 M( sp ) ← X , sp ← sp - 1

4 M( sp ) ← Y , sp ← sp - 1

--------

6E

1

4 M( sp ) ← PSW , sp ← sp - 1

6F

1

5

Return from subroutine

sp ← sp +1, pcL ← M( sp ), sp ← sp +1, pcH ← M( sp ) --------

7F

1

Return from interrupt

6 sp ← sp +1, PSW ← M( sp ), sp ← sp + 1,

pcL ← M( sp ), sp ← sp + 1, pcH ← M( sp )

restored

EF

1

3 Stop mode ( halt CPU, stop oscillator )

--------

Oct. 1999 Ver 1.0

vii

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