pull_down.dt

来自「台湾义隆（EM78P222N）,DATASHEET.」· DT 代码 · 共 25 行

;Defined registers
PDCR      == 0XB
;
IOC6      == 0X6          
          ORG       0X0
          NOP
          JMP       RESET               ;Power on reset
          ;
RESET:
          NOP
          CALL      SET_222_PULLDOWN    ; Initial 222
          NOP
MAIN:
          NOP
          JMP        $
          ;
SET_222_PULLDOWN:
          BANK       1
          MOV        A, @0XFF
          MOV        IOC6, A            ; Set PORT6 as input
          MOV        A, @0
          MOV        PDCR, A            ; Set PORT6.0~7 pull down
          RET
          ;
          END