the actual size of allocated memory for each half of circular buffer.

@ Return Code

ERR_NoError

ERR_SmallerDMAMemAllocated

5.16 _7200_Free_DBDMA_Mem

@ Description

Release a system circular buffer DMA memory under Windows 95/98 environment. This function is only available in Windows 95/98 version. For double-buffered transfer principle, please refer to Section 6 “Double Buffered Mode Principle”.

@ Syntax

Visual C++ (Windows 95)

int W_7200_Free_DBDMA_Mem (U32 handle)

Visual Basic (Windows 95)

W_7200_Free_DBDMA_Mem (ByVal handle As Long ) As Long

@ Argument

handle: The handle of sys tem DMA memory to release.

@ Return Code

ERR_NoError

5.17 _7200_DI_DMA_Start

@ Description

The function will perform digital input N times with DMA data transfer by using one of the following four sampling modes :

1.pacer trigger (internal timer trigger)

2.external rising edge I_IRQ

3.external falling edge I_IRQ

4.I_REQ & I_ACK handshaking

It will take place in the background which will not stop until the Nth input data is transferred or your program execute _7200_DI_DMA_Stop function to stop the process.

After executing this function, it is necessary to check the status of the operation by using the function _7200_DI_DMA_Status. The PCI-7200 Bus mastering DMA is different from traditional PC style DMA. Its description is as follow :

40 C/C++ Libraries

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Intel cPCI-7200 manual 16 7200FreeDBDMAMem, 17 7200DIDMAStart, 40 ∙ C/C++ Libraries

PCI-7200, cPCI-7200 specifications

The Intel cPCI-7200 is a high-performance, rugged computing platform designed to meet the demands of embedded and telecommunications applications. As a part of Intel’s CompactPCI family, the cPCI-7200 highlights the commitment to providing advanced processing capabilities in a flexible and modular form factor.

One of the standout features of the cPCI-7200 is its powerful multicore processing capabilities. It is equipped with Intel's latest x86 architecture, offering multiple cores that enable efficient execution of parallel tasks. This makes the cPCI-7200 particularly suitable for applications requiring real-time processing, such as network and communication systems. Additionally, the system supports high-speed data transfer, essential for bandwidth-intensive applications.

The cPCI-7200 also integrates advanced I/O technologies, ensuring that users can connect various peripherals and devices. With support for PCI Express, Ethernet, and other high-speed interfaces, the system provides a robust communication backbone for data-intensive applications. The modular design of CompactPCI allows for easy expansion, accommodating custom I/O cards as per specific application needs.

Built to function in harsh environments, the cPCI-7200 is designed with ruggedness in mind. It meets stringent environmental standards, which include resistance to shock, vibration, and temperature extremes. This makes the platform especially suitable for deployment in aerospace, military, and industrial settings where reliability is critical.

Furthermore, the Intel cPCI-7200 incorporates extensive power management features, which enhance overall system efficiency and reduce energy consumption. The adaptive power management capabilities enable the system to adjust power usage based on workload requirements, making it an eco-friendly option in comparison to other embedded systems.

Another significant characteristic of the cPCI-7200 is its scalability. The system can accommodate varying performance levels depending on application demands. Users can select from various processing options and add or remove resources as required, making this platform not only versatile but also cost-effective in the long run.

In summary, the Intel cPCI-7200 is a powerful, flexible, and rugged computing solution that caters to the evolving needs of embedded and telecommunications markets. With its advanced processing capabilities, extensive I/O options, rugged construction, energy-efficient design, and scalable architecture, it stands out as a reliable choice for developers looking to build high-performance applications in various challenging environments.