Reads a byte of data from the specified input port.
[ ucData = ] PortInByte ( nPort )
The PortInByte procedure syntax has the following parts:
Name |
Type |
Description |
ucData |
Byte |
Returned byte read from the port |
nPort |
Val Short |
Input port number (address) |
The function, which may be used to read data from I/O-mapped, PC-based instruments, returns a byte containing the data read from nPort. nPort can be any number in the range 0x0000 - 0xFFFF.
Note: Physical memory and Port I/O access is a privileged instruction and require special access code from MTS. Contact MTS for obtaining the access code - ATEasy 2023 (v12.0).
The following example reads a byte from address 0x311 to ucInByte:
ucData = PortInByte(0x311)