Samsung KS57C2308 Manual page 198

INTERRUPTS
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PROGRAMMING TIP — Enabling the INTB and INT4 Interrupts
To simultaneously enable INTB and INT4 interrupts:
INTB DI
BTSTZ
JP
•
•
•
EI
IRET
INT4 BITR
•
•
•
EI
IRET
7-14
IRQB
INT4
IRQ4
; IRQB = 1 ?
; If no, INT4 interrupt; if yes, INTB interrupt is processed
; INT4 is processed
KS57C2308/P2308/C2316/P2316