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Computer Engineering IntroLab1 page 1 Beginners explanation on how a processor works! The labs will teach you the truth.

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Presentation on theme: "Computer Engineering IntroLab1 page 1 Beginners explanation on how a processor works! The labs will teach you the truth."— Presentation transcript:

1 Computer Engineering IntroLab1 page 1 Beginners explanation on how a processor works! The labs will teach you the truth.

2 Computer Engineering IntroLab1 page 2 Lab 1 Procedure calls. Byte and word array indexing, pointers. Conditional branch instructions. Simple loops. Reading/ writing from/to data memory.

3 Computer Engineering IntroLab1 page 3 Branch instruction (part of) Beqrs rt label Bners rt label Together with Slt-instruction and $0 enough for first lab.

4 Computer Engineering IntroLab1 page 4 Register conventions (fig A9) Reg. nameNrUsage zero 0Constant 0 at1Reserved for assembler v0 - v12-3Expr. evaluation, function results a0 - a34-7Argument 1-4 t0 - t78-15Temporary (not saved) s0 - s716-23Saved Temporary t8 - t924-25Temporary (not saved) k0 - k126-27Reserved for OS kernel gp28Pointer to global area sp29Stack pointer fp30Frame pointer ra31Return address

5 Computer Engineering IntroLab1 page 5 Lab 1 register usage Use only $sx $tx $r0(=$0)

6 Computer Engineering IntroLab1 page 6 Lab 1 - How to represent characters? Use the ASCII-code Complete table at WWW

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