wdt_set_app.dt

台湾义隆（EM78P222N）,DATASHEET.

;Defined registers
PDCR      == 0XB
;
IOC6      == 0X6          
          ORG       0X0
          NOP
          JMP       RESET            ;Power on reset
          ;
RESET:
          DISI
          NOP
          CALL      SET_WDT          ; Set WDT
          NOP
MAIN:
          WDTC                       ; Clear WDT
          NOP
          JMP        MAIN
          ;
SET_WDT:
          BANK       1
          MOV        A, @0XB8
          MOV        WDTCR, A        ; Enable WDT,set prescaler as 1：128          
          RET
          ;
          END