User`s manual

16 PCL-848AB User's Manual
3.4.3. DEVICE
Purpose:
This command installs an IEEE-488 device driver in place of s the LPT1:, LPT2:,
LPT3:, COM1: and COM2: driver. The IEEE-488 devices then can be accessed using
the system commandst in MS-DOS.
Offset :
DEVICE%=57
Syntax:
CALL DEVCLR%(ADDR%,PORT%)—BASIC
CALL ABSOLUTE(ADDR%,PORT%,DEVCLR%) —BASIC Compiler~
Parameter:
ADDR% - The address of the device which is assigned to
LPTn: or COMn:. If ADDR% < 0 or ADDR% > 30, the replace-
ment of LPTn: or COMn: is disabled.
PORT% - The port number which is to be replaced with the
IEEE-488 device.
1 : assigned to LPT1:
2 : assigned to LPT2:
3 : assigned to LPT3:
4 : assigned to COM1:
5 : assigned to COM2:
Bus Activity:
None.