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- ; This sample prints out the command
- ; line parameters.
- ; In DOS you simply add this line
- ; after an executable:
- ; param.com my parameters
- ; In emulator you should set
- ; them by selecting "Set command line paramters"
- ; from "File" menu of emulator window.
-
- #make_COM#
-
- ORG 100h
-
-
- ; address of command line:
- MOV SI, 80h
-
-
- ; copy command line to our buffer:
- XOR CX, CX ; zero CX register.
- MOV CL, [SI] ; get command line size.
-
- LEA DI, buffer ; load buffer address to DI.
-
- CMP CX, 0 ; CX = 0 ?
- JZ no_param ; then skip the copy.
-
- INC SI ; copy from second byte.
- next_char:
- MOV AL, [SI]
- MOV [DI], AL
- INC SI
- INC DI
- LOOP next_char
-
- ; set '$' sign in the end of the buffer:
- MOV BYTE PTR [DI], '$'
-
- ; print out the buffer:
- LEA DX, buffer
- MOV AH, 09h
- INT 21h
-
- JMP exit ; skip error message.
-
- no_param:
- ; print out the error message:
- LEA DX, msg
- MOV AH, 09h
- INT 21h
- JMP exit
-
- ; exit here:
- exit:
- RET
-
- buffer DB 30 dup (' ')
- msg DB 'No command line parameters!', 13, 10, '$'
-
- END
-