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Contents
Programming For ISA Hardware
Overview
Programmers Guide
Scenario
I/O Ports control
Single read/write operations
Data array read/write operations
Accessing Physical Memory Addresses
Memory Mapping
Additional Functions
Hardware interrupts handling at user level
Common Functions
OpenRapidIsa
CloseRapidIsa
IsRapidIsaOpened
GetHardwareConfiguration
Direct Port I/O
GetPortByte
GetPortWord
GetPortLong
SetPortByte
SetPortWord
SetPortLong
ReadPortBuffer
WritePortBuffer
Memory Access
MapPhysToLinear
UnmapMemory
GetMem
GetMemW
GetMemL
SetMem
SetMemW
SetMemL
Hardware Interrupts
UnmaskIsaIrq
MaskIsaIrq
GetInterruptCounter
GetPortLong
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Reads a double word (four bytes) from the specified port address.

Language

Description

C/C++
ULONG GetPortLong ( HANDLE hIsa, ULONG PortAddress);
Delphi
function GetPortLong ( hIsa: THandle; PortAddress: Longword ): Longword; stdcall;
VB
Function GetPortLong ( ByVal hIsa As Long, ByVal PortAddress As Long) As Long


Parameters:
hIsa - the handle returned by a successful call to OpenRapidIsa ;
PortAddress - the port address in I/O space

Return Value :
The double word value read from the specified port address.

See also: GetPortByte GetPortWord SetPortByte SetPortWord SetPortLong