Bussing Strategies
Multiple Busses
Real datapaths are a compromise between the two extremes
Single Bus Design
Register Transfer
Diagram
Register transfer operations:
PC ? BUS
IR ? BUS
AC ? BUS
MBR ? BUS
ALU Result ? BUS
BUS ? PC
BUS ? IR
BUS ? AC
BUS ? MBR
BUS ? ALU B
BUS ? MAR
AC ? ALU A
("hardwired")
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