GMS81508A Datasheet, PDF(77/91 Page) Hynix Semiconductor – USERS MANUAL

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GMS81508A Datasheet, PDF (77/91 Pages) Hynix Semiconductor – USERS MANUAL

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HYUNDAI MicroElectronics

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

E0

1

3

FF

1

2

0D 1

4

2D 1

4

4D 1

4

6D 1

4

0E

1

4

2E

1

4

4E

1

4

6E

1

4

6F

1

5

7F

1

6

00

1

3

OPERATION

FLAG

NVGBHIZC

Software interrupt : B â1â, M( sp) ( pcH ), sp ---1-0--

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

sp sp -1, pcL ( 0FFDEH ) , pcH ( 0FFDFH) .

Disable interrups : I â0â

-----0--

Enable interrups : I â1â

-----1--

No operation

sp sp 1, A M( sp )

sp sp 1, X M( sp )

sp sp 1, Y M( sp )

sp sp 1, PSW M( sp )

M( sp ) A , sp sp 1

M( sp ) X , sp sp 1

M( sp ) Y , sp sp 1

M( sp ) PSW , sp sp 1

--------

--------

( restored )

--------

Return from subroutine

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

pcH M( sp )

sp +1,

Return from interrupt

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

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

Stop mode ( halt CPU, stop oscillator )

--------

( restored )

--------

72

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