Lab 3 (1).docx - Lab 03 Assembly Arithmetic and Memory Instructions Lab Objective Understanding of basic assembly instructions and their working on MIPS

Lab 3 (1).docx - Lab 03 Assembly Arithmetic and Memory...

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Lab # 03 : Assembly Arithmetic and Memory Instructions Lab Objective: Understanding of basic assembly instructions and their working on MIPS architecture using SPIM Simulator Lab Description: Load / Store Instructions RAM access only allowed with load and store instructions All other instructions use register operands load: lw register_destination, RAM_source #copy word (4 bytes) at source RAM location to destination register. lb register_destination, RAM_source #copy byte at source RAM location to low-order byte of destination register, # and sign-e.g.tend to higher-order bytes store word: sw register_source, RAM_destination #store word in source register into RAM destination sb register_source, RAM_destination #store byte (low-order) in source register into RAM destination load immediate: li register_destination, value #load immediate value into destination register example: .data var1: .word 23 # declare storage for var1; initial value is 23 .text
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lw $t0, var1 # load contents of RAM location into register $t0: $t0 = var1 li
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