Chapter 5: Software - ICS Advent PCI-DIO48 Series Product Manual

Chapter 5: Software

Several programs are provided to support these Digital I/O cards and, also, to help you develop
your application's software. Most of these programs are described on page 1-1 of this manual.
The following paragraphs describe the IRQCOS driver, Win32COS driver (applicable for
PCI-DIO48(S)S only), setup program, and the VisualBASIC utility program
IRQCOS Driver
Description
IRQCOS.VXD is a Virtual Device Driver, or VxD, for Windows 95/98. IRQCOS.SYS is a
Device Driver for Windows NT 4.0. Functionally, they are identical, and for the purposes of this
manual the term IRQCOS Driver will be used to refer to the appropriate file for your operating
system. Together with Win32COS.DLL, the IRQCOS Driver allows a program to easily respond
to hardware change-of-state interrupt requests, or IRQs, and read data off the card following an
IRQ.
Installation
To install IRQCOS.VXD in Windows 95/98, copy it to the directory C:\Windows\System. If your
hard drive has a letter other than C, substitute the appropriate letter. It is not necessary to reboot
your system prior to using IRQCOS.VXD.
To install IRQCOS.SYS in Windows NT, copy it to the directory C:\WINNT\System32\Drivers. If
your hard drive has a letter other than C, substitute the appropriate letter. It is not necessary to
reboot your system prior to using IRQCOS.SYS.
Win32COS.DLL
Description
Win32COS.DLL is a Dynamic Link Library, or DLL, for Windows 95/98 and NT. It provides a
simple interface to the IRQCOS Driver, allowing a program to easily respond to hardware
change-of-state interrupts and read data off the card after an IRQ occurs. Two functions are
exported by Win32COS.DLL: InitCOSDriver, and GetCOSData. To use these functions in a
program, they must first be imported into that program. The simplest way to import these functions
in Pascal is to include the Win32COS unit in your Uses clause, or, in C, to include Win32COS.H.
Additionally, in C, the library file CBCOS.LIB (for C++ Builder) or VCCOS.LIB (for Visual
C++) must be linked to the program. This is accomplished by adding it to the project or editing the
makefile. If you are not using the Win32COS header file and wish to import the functions
manually, the necessary lines in Pascal would be:
function InitCOSDriver(BaseAddress: DWORD; IRQ: BYTE; BusType: SmallInt;
BusNumber:BYTE): ByteBool; cdecl; external 'Win32COS.dll';
function GetCOSData(Buf: Pointer): ByteBool; cdecl; external 'Win32COS.dll';
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