Advantech PCL-848A/B Uživatelský manuál stáhnout pdf (Strana 22)

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.

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Advantech PCL-848A/B Uživatelský manuál Strana 22