Measurement Computing Personal488 rev.3.0 For DOS & Windows 3.Xi - Manual (Page 344)

III. COMMAND REFERENCES - 15. Command References 15B. Driver488/SUB, W31, W95, & WNT
Personal488 User’s Manual, Rev. 3.0 III-329
IOAddress
Driver488/SUB and Driver488/W31 only
SYNTAX int pascal IOAddress(DevHandleT devHandle, uint ioaddr);
devHandle refers to either an interface or an external device. If devHandle
refers to an external device, then the IOAddress command acts on the
hardware interface to which the external device is attached.
ioaddr is the I/O base address to set.
RETURNS -1 if error
MODE Any
BUS STATES None
SEE ALSO IntLevel, DmaChannel, TimeOut
EXAMPLE errorcode = IOAddress(ieee,0x02E1);
The IOAddress command specifies the I/O port base address of the I/O adapter. The base address is
set by a 16-bit integer, ioaddr , that is usually given as a hexadecimal number. The default I/O port
base address for the IEEE 488 hardware interface is 0X02E1 for the first interface, 0X22E1 for the
second, and 0X42E1 and 0X62E1 for the third and fourth interfaces. The default I/O port base
addresses for the serial hardware interface is 0X03F8 . Other standard I/O port base addresses are
0X02F8 , 0X03E8 , 0X02E8 . The IOAddress value must match the hardware switch settings on the I/O
adapter.
KeepDevice
SYNTAX int pascal KeepDevice(DevHandleT devHandle);
devHandle refers to an external device.
RETURNS -1 if error
MODE Any
BUS STATES None
SEE ALSO MakeDevice, RemoveDevice, OpenName
EXAMPLE errorcode = KeepDevice(scope);
The KeepDevice command changes the indicated temporary Driver488 device to a permanent device,
visible to all applications. Permanent Driver488 devices are not removed when Driver488 is closed.
Driver488 devices are created by
MakeDevice and are initially temporary. Unless KeepDevice is
used, all temporary Driver488 devices are forgotten when Driver488 is closed. The only way to
remove the permanent device once it has been made permanent by the
KeepDevice command, is to
use the RemoveDevice command.
LightPen
Driver488/SUB only
SYNTAX int pascal LightPen(DevHandleT devHandle, bool flag);
devHandle refers to either an IEEE 488 interface or an external device. If
devHandle refers to an external device, then the LightPen command acts on
the hardware interface to which the external device is attached.
flag may be either ON ( LightPen enabled), or OFF ( LightPen disabled).
RETURNS -1 if error
MODE Any
BUS STATES None
SEE ALSO OnEvent, Arm, Disarm
EXAMPLE errorcode = LightPen(ieee,ON);