Eicon Networks CX1 Especificações descarregar pdf (Página 40)

Across the Boards

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Communications Device Drivers

Section 5 - General Configuration and Usage Information

Page 190

cfSOFTWARE Confidential,

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2000

5.8 ATB/Win16 Applications under WOW (Windows-on-Windows)

in Windows NT and in Windows 95

The WOW (Windows-on-Windows) environment of Windows NT provides the capability to run 16 bit

Windows applications under Windows NT. WOW prevents many ATB/Win16 device drivers from running,

either because they access hardware directly or invoke an unavailable API. In many cases CFXNTGT.DLL

makes it possible to access the Windows NT driver instead of the Win16 driver, and thus provide access to a

Windows NT emulator or a emulation card that does not provide an API to the WOW session.

Under Windows 95, direct access to hardware is not prevented, but it may be desirable to use an emulator’s 32

bit API (instead of the 16 bit API, which may not be available in all cases). In many cases, CFXNTGT.DLL

makes it possible to use the ATB/Win32 drivers from an ATB/Win16 application.

The use of an ATB/Win32 driver is mostly transparent to an ATB/Win16 application. When a Win32 driver is

selected at XAPI open time, CFXNTGT.DLL is automatically loaded, and the Win32 driver is accessed

transparently. In most cases the Win32 driver has a unique device name and number that does not conflict with

any Win16 names. In some cases (drivers which access hardware or serial ports directly), the base Win32 driver

name/number is the same as a Win16 driver name/number, and a synonym has been assigned to provide access

to that driver for ATB/Win16 applications.

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