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Unformatted text preview: 3 The StrongARM SA-110 12.4 The ARM920T and ARM940T 12.5 The ARM946E-S and ARM966E-S 12.6 The ARM1020E 12.7 Discussion 12.8 Example and exercises 318 327 339 344 347 323 335 341 346 Embedded ARM Applications 13.1 13.2 13.3 13.4 13.5 The VLSI Ruby II Advanced Communication Processor The VLSI ISDN Subscriber Processor The OneCTM VWS22100 GSM chip The Ericsson-VLSI Bluetooth Baseband Controller The ARM7500 and ARM7500FE 348 349 352 355 360 Contents xi 13.6 The ARM7100 13.7 The SA-1100 13.8 Examples and exercises 364 368 371 The AMULET Asynchronous ARM Processors 14.1 14.2 14.3 14.4 14.5 14.6 14.7 14.8 Self-timed design AMULET1 AMULET2 AMULET2e AMULET3 The DRACO telecommunications controller A self-timed future? Example and exercises 374 375 377 381 384 387 390 396 397 399 405 410 413 Appendix: Computer Logic Glossary Bibliography Index An Introduction to Processor Design Summary of chapter contents The design of a general-purpose processor, in common with most engineering endeavours, requires the careful consideration of many trade-offs and compromises. In this chapter we will look at the basic principles of processor instruction set and logic design and the techniques available to the designer to help achieve the design objectives. Abstraction is fundamental to understanding complex computers. This chapter introduces the abstractions which are employed by computer hardware designers, of which the most important is the logic gate. The design of a simple processor is presented, from the instruction set, through a register transfer level description, down to logic gates. The ideas behind the Reduced Instruction Set Computer (RISC) originated in processor research programmes at Stanford and Berkeley universities around 1980, though some of the central ideas can be traced back to earlier machines. In this chapter we look at the thinking that led to the RISC movement and consequently influenced the design of the ARM processor which is the subject of the following chapters. With the rapid development of markets for portable computer-based...
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