Chapter 2 WD_xxx PCI/PCMCIA/ISA Functions

This chapter describes the basic WD_xxx PCI/PCMCIA/ISA WinDriver API.

2.1 API Calling Sequence – PCI/PCMCIA/ISA

The following is a typical calling sequence for the PCI/PCMCIA/ISA drivers.

Figure 2.1 WinDriver PCI/PCMCIA/ISA Calling Sequence


PCMCIA is supported only on Windows 7/Vista/Server 2008/Server 2003/XP/2000. Memory addresses can be accessed directly, using the user-mode mapping of the address returned by `WD_CardRegister` [2.8] (or the kernel mapping, when accessing memory from the Kernel PlugIn). Direct memory access is more efficient than using `WD_Transfer` [2.11]. It is possible (although not recommended) to replace the use of the high-level `InterruptEnable` convenience function [2.18] with the low-level `WD_IntEnable` [3.2], `WD_IntWait` [3.3] and `WD_IntCount` [3.4] functions, and replace the call to `InterruptDisable` [2.19] with a call to the low-level `WD_IntDisable` function [3.5]. For more information on the low-level WinDriver interrupt handling API, refer to 3 of the manual. WinDriver's general-use APIs, such as `WD_DebugAdd` [5.6] or `WD_Sleep` [5.8], can be called anywhere between the calls to `WD_Open` and `WD_Close` For more details, refer to 5.

PCMCIA is supported only on Windows 7/Vista/Server 2008/Server 2003/XP/2000.
Memory addresses can be accessed directly, using the user-mode mapping of the address returned by WD_CardRegister [2.8] (or the kernel mapping, when accessing memory from the Kernel PlugIn). Direct memory access is more efficient than using WD_Transfer [2.11].
It is possible (although not recommended) to replace the use of the high-level InterruptEnable convenience function [2.18] with the low-level WD_IntEnable [3.2], WD_IntWait [3.3] and WD_IntCount [3.4] functions, and replace the call to InterruptDisable [2.19] with a call to the low-level WD_IntDisable function [3.5].
For more information on the low-level WinDriver interrupt handling API, refer to 3 of the manual.
WinDriver's general-use APIs, such as WD_DebugAdd [5.6] or WD_Sleep [5.8], can be called anywhere between the calls to WD_Open and WD_Close For more details, refer to 5.


Chapter 1 Overview		2.2 WD_PciScanCards