Bussing Schemes
Implementation of Register SWAP operation
Establish connection paths
Swap takes place at next state
Point-to-Point Scheme Plusses and Minuses:
+ transfer a new value into each of the
four registers at same time
+ register swap implemented in a single
- 5 gates to implement 4:1 MUX
32 bit wide datapath implies 32 x 5 x 4 registers
very expensive implementation