Technical data

Programmable Configuration Data

MVME4100 Single Board Computer Programmer’s Reference (6806800H19B)

* This function's purpose is to generate the CRC for the

* passed VPD SROM buffer.

* call:

* argument #1 = buffer pointer

* argument #2 = number of elements

* return:

* CRC data

unsigned int

vpdGenerateCRC(pVpdBuffer, vpdSromSize)

unsigned char *pVpdBuffer;

unsigned int vpdSromSize;

{

unsigned int crcValue;

unsigned int crcValueFlipped;

unsigned char dataByte;

unsigned int index, dataBitValue, msbDataBitValue;

crcValue = 0xffffffff;

for (index = 0; index < vpdSromSize; index++)

{

dataByte = *pVpdBuffer++;

for (dataBitValue = 0; dataBitValue < 8; dataBitValue++)

{

msbDataBitValue = (crcValue >> 31) & 1;