my program is asm file (.a51) when i build it ,the message occurs .I hadn't found a way to solve it, It really makes me headache. would you help me please?
the message is as follows:
COPYRIGHT KEIL ELEKTRONIK GmbH 1987 - 2008 *** ERROR: COMMAND-FILE '' NOT FOUND one led.a51 - 0 Error(s), 0 Warning(s).
ORG 000H; MAIN: SETB P1.0; LCALL DELAY; CLR P1.0; LCALL DELAY; LJMP MAIN; DELAY:MOV R7,#250; D1:MOV R6,#250; D2:DJNZ R6,D2; DJNZ R7,D1; RET; END;