ReadPortL function
Read longints from a PC port.
Declaration
function ReadPortL(Port: LongInt): LongIntDescription
The procedural form of ReadPortL reads Count longints from port
Port and stores them in Buf. There must be enough memory
allocated at Buf to store Count Longints.
The functional form of ReadPortL reads 1 longint from port B
and returns the longint that was read.
Note that you need permission to read a port. This permission can be set by the root user with the FpIOPerm call.
Errors
In case of an error (not enough permissions read this port), runtime 216 ( Access Violation) will occur.
See also
An experiment, built from development snapshots. Not the official Free Pascal or Lazarus documentation.