Bit-reverse a byte on 68HC12

Question

I\'m in a microprocessors class and we are using assembly language in Freescale CodeWarrior to program a 68HCS12 micro controller. Our assignment this week is to revers a by

Answer 1

This was a comment but I thought WTH!

To save space over the 256 byte table you can have a 16 byte table containing the values for four bits (nibbles) at a time. The algorithm then would be

revval=(revdigit[inval&0x0f]<<4)|
        revdigit[inval>>4];

If I were a prof I'd certainly like the two parts where one shift is in the indexing and the other outside.