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Unformatted text preview: 4-47 Chapter 4—Processor Design Fig 4.15 The 2-Bus SRC Microarchitecture
A bus (“In bus”) 32 32 general purpose registers 31 0 R0 B bus (“Out bus”) 32 R31 IR PC MA Memory bus MD A • Bus A carries data going into registers • Bus B carries data being gated out of registers • ALU function C = B is used for all simple register transfers A ALU C B Computer Systems Design and Architecture by V. Heuring and H. Jordan © 1997 V. Heuring and H. Jordan ...
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