HOW ASSEMBLER WORKS Two-pass assembler - Source program scanned twice before producing the object code ● LC: Assembler's simulation of PC -When an assembly program is assembled, LC is used to keep track of the "memory location" at which an instruction would be should that instruction be executed. -So that machine code can be generated correctly from assembly code.

HOW ASSEMBLER WORKS Two-pass assembler - Source program scanned twice before producing the object code ● LC: Assembler's simulation of PC -When an assembly program is assembled, LC is used to keep track of the "memory location" at which an instruction would be should that instruction be executed. -So that machine code can be generated correctly from assembly code.

Name: Make an explanation. HOW ASSEMBLERWORKSTwo-pass assemblerSource progra
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Description: Make an explanation. HOW ASSEMBLERWORKSTwo-pass assemblerSource program scanned twice before producing the object code• LC: Assembler's simulation of PC●-When an assembly program is assembled, LC is used to keep track ofthe "memory location" at which

Systems Architecture

7th Edition

ISBN:9781305080195

Author:Stephen D. Burd

Publisher:Stephen D. Burd

Chapter4: Processor Technology And Architecture

Section: Chapter Questions

Problem 26VE: _____ is a CPU design technique in which instruction execution is divided into multiple stages and...

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1. Anna designs a 2.5 GHz processor where two important programs, A and B, take onesecond each to execute. Each program has a CPI of 1.25. Elsa is tasked with designingthe company's next-generation processor and she comes up with an idea that improvesthe CPI of A to 1.1 and the CPI of B to 0.9. But the idea is so complex that theprocessor can only be implemented with a cycle time of 0.5 ns. Does Elsa's newprocessor out-perform Anna's processor on program A? How about on program B?2. Consider two different implementations of the same instruction set architecture. Theinstructions can be divided into four classes according to their CPI (class A, B, C, andD). P1 with a clock rate of 2.5 GHz and CPIs of 1, 2, 3, and 3, and P2 with a clockrate of 3 GHz and CPIs of 1, 2, 2, and 2.Given a program with a dynamic instructioncount of 106 instructions divided into classes as follows: 10% class A, 20% class B,50% class C, and 20% class D, which is faster: P1 or P2?
Compilers and two-pass assemblers: identical concerns? Assume compilers produce object modules, not assembly. Assume compilers produce assembly code.
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