ADM-XRC SDK 2.8.1 User Guide (Linux)
© Copyright 2001-2009 Alpha Data


ADMXRC_ReverseBytes

Prototype

void
ADMXRC_ReverseBytes(
    ADMXRC_IMAGE Image,
    ULONG        Offset,
    ULONG        Length);

Arguments

Argument Type Purpose
Image In/out The bitstream image containing the SelectMap data to reverse
Offset In The position within Image at which the SelectMap data is located
Length In The length of the SelectMap data within Image

Return value

This function has no return value.

Description

This function reverses the bit order of the bytes that comprise a bitstream. The Xilinx bitgen program outputs a file whose bytes are logically flipped with respect to what is required by a Virtex FPGA's SelectMap port.

The Image parameter should be a variable of type ADMXRC_IMAGE, obtained from an earlier call to ADMXRC_LoadFpgaFile.

The Offset parameter should be the offset value returned by an earlier call to ADMXRC_FindImageOffset.

The Length parameter should be the length of the SelectMap data, returned by the call to ADMXRC_FindImageOffset.

 


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