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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
SetPortByte
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Writes a byte to the specified port address.

Language

Description

C/C++
void SetPortByte ( HANDLE hIsa, ULONG PortAddress, UCHAR bValue);
Delphi
procedure SetPortByte ( hIsa: THandle; PortAddress: Longword; bValue: Byte ); stdcall;
VB
Sub SetPortByte ( ByVal hIsa As Long, ByVal PortAddress As Long, ByVal bValue As Byte)


Parameters:
hIsa - the handle returned by a successful call to OpenRapidIsa ;
PortAddress - the port address in I/O space
b
Value - specifies a byte to be written to the port.

Return Value : None.

See also: GetPortByte GetPortWord GetPortLong SetPortWord SetPortLong