@ECHO OFF
:START
C:
CD\PCB\DOORBILL
IF EXIST BILLRUN.BAT DEL BILLRUN.BAT
IF EXIST ENDBILL DEL ENDBILL
DOORBILL DOORBILL.CFG
IF EXIST ENDBILL GOTO EXIT
IF NOT EXIST BILLRUN.BAT GOTO EXIT
CALL BILLRUN
GOTO START
:EXIT
C:
CD\PCB
BOARD