Wrap Up
Signed multiplication/division can be done by converting to positive numbers and then fixing sign of result -- remainder has sign of dividend
Multiplication and Divide can be performed by the same hardware
Lo contains product or quotient; Hi contains overflow or remainder
Why a 33rd step: 32-bit signed quotient and divisor imply 31-bit magnitude, or a 62 bit magnitude dividend + a sign bit. Placing the 63 bits into the remainder register right incurs an extra shift.