Fujitsu MB90460 Series Hardware Manual page 553

CHAPTER 18 DTP/EXTERNAL INTERRUPT CIRCUIT
LOOP:
;-------Interrupt program-------------------------------------------------------------------------------------------
WARI:
;
;
;
CODE
;-------Vector setting------------------------------------------------------------------------------------------------------
VECT
VECT
END
534
MOV BAPL,#00H
MOV BAPM,#06H
MOV BAPH,#00H
MOV ISCS,#12H
MOV IOAL,#00H
MOV IOAH,#00H
MOV DCTL,#0AH
MOV DCTH,#00H
CLRB I:EN0
MOV I:ELVRL,#00000001B;Selects H level for INT0
CLRB I:ER0
SETB I:EN0
MOV ILM,#07H
OR CCR,#40H
MOV A,#00H
MOV A,#01H
BRA LOOP
CLRB I:ER0
: ;
User processing
:
RETI
ENDS
CSEG ABS=0FFH
ORG 0FFACH
DSL WARI
ORG 0FFDCH
DSL START
DB 00H
ENDS
STAR
2
;Enables EI OS. Channel 0
;Sets the address of the output data
;
;
;Byte transfer. I/O address fixed. Buffer address
+ 1. Transfer from memory to I/O
;Specifies port 0 (PDR0) as the transfer destination
;address pointer
;Number of transfers: 10
;
;Disables INT0 using ENIR
;Clears the cause of INT0 using EIRR
;Enables INT0 using ENIR
;Sets ILM in PS to level 7
;Enables interrupts
;Endless loop
;
;
;Clears the interrupt request flag
;Switches the channel and changes the transfer
address, if required
;Specifies processing again, such as the termination
2
of EI OS. To terminate the processing, interrupts
must be disabled
;Returns from the interrupt
;Sets vector for interrupt #20 (14H)
;Sets reset vector
;Sets single-chip mode