Apparatus and method for generating a Galois-field syndrome

A method, comprising:

• loading a first data byte from a first storage device to a first register and loading a second data byte from a second storage device to a second register;
• ANDing the most significant bit (MSB) of said first data byte and a Galois-field polynomial to generate a first intermediate output;
• XORing each bit of the first intermediate output with the least significant bits (LSBs) of the first data byte to generate a second intermediate output;
• MUXing the second intermediate output with each bit of the first data byte to generate a third intermediate output;
• XORing each bit of the third intermediate output with each bit of the second data byte to generate at a fourth intermediate output;
• and
• generating a RAID Q syndrome based on, at least in part, the fourth intermediate output.

An article comprising a storage medium having stored thereon instructions that when executed by a machine result in the following:

• loading a first data byte from a first storage device to a first register and loading a second data byte from a second storage device to a second register;
• ANDing the most significant bit (MSB) of said first data byte and a Galois-field polynomial to generate a first intermediate output;
• XORing each bit of the first intermediate output with the least significant bits (LSBs) of the first data byte to generate a second intermediate output;
• MUXing the second intermediate output with each bit of the first data byte to generate a third intermediate output;
• XORing each bit of the third intermediate output with each bit of the second data byte to generate at a forth intermediate output;
• and
• generating a RAID Q syndrome based on, at least in part, the fourth intermediate output.