指令集大体上可以分为两大类: CISC(complex instruction set computer) RISC(reduced instruction set computer) 由于CISC 和 RISC 不像物理和数学概念一样可以做出无二义性的严谨定义,所以主流观点都认为 CISC 的指令隐含有对总线的 load / store 操作,即 add, sub 等算术逻辑指令的操作数允许是一个内存地址,执...
moduleifu(nPC_sel,zero,clk,rst,instruction,j_sel,jValue);inputclk,rst;input[1:0]nPC_sel;input[31:0]zero;inputj_sel;input[25:0]jValue;output[31:0]instruction;reg[31:0]pc;reg[7:0]im[1023:0];reg[31:0]pcnew;wire[31:0]temp,t0,t1;wire[15:0]imm16;reg[31:0]extout;//give ...
指令集大体上可以分为两大类: CISC(complex instruction set computer) RISC(reduced instruction set computer) 由于CISC 和 RISC 不像物理和数学概念一样可以做出无二义性的严谨定义,所以主流观点都认为 CISC 的指令隐含有对总线的 load / store 操作,即 add, sub 等算术逻辑指令的操作数允许是一个内存地址,执...
长度:RISC固定长度,比如MIPS的长度为32位;CISC指令长度可变,比如IA32(?)从1到15位二进制表示 格式:RISC支持简单寻址格式(addressing format),只允许基址寻址(base addressing)和替代寻址(displacement addressing);MISC支持多种运算符,内存操作数指示器(memory operand specifier)可以有替代、基址和索引寄存器等多种组合。
指令集大体上可以分为两大类：CISC(complex instruction set computer)RISC(reduced instruction set ...
main: # indicates start of code (first instruction to execute) # ... # End of program, leave a blank line afterwards to make SPIM happy Data Declarations format for declarations: name: storage_type value(s) create storage for variable of specified type with given name and specified value ...
自行设计16位MIPS指令集 Idealinkstudent'slaboratorialCpuverion1.Instructionset:MIPS(16bitsamendedform)Instructionformat:R-TypeICopcode[15:11]rs[10:8]rt[7:5]rd[4:2]010000addxxxxxxxxxxxxxxxxxxaddu010000sub10000xxxxxxxxxsubu10000xxxxxxxxxsll11000xxxxxxNULLslt11000xxxxxxNULLsrl11000xxxxxxNULLsrtxxx11000...
指令集大体上可以分为两大类：CISC(complex instruction set computer)RISC(reduced instruction set ...
Instruction Formats : Instruction formats: all 32 bits wide (one word):6 5 5 5 5 6 +---+---+---+---+---+---+ R-type format| Op-code| R s | R t | R d | SA |Funct-code | +---+---+---+---+---+---+ ...
[1].strip()elif(len(code)>2):print"non-standard mips instruction encountered in line",line,"code:",mips[line]exit()# conversionforlineinxrange(len(mips)):code=mips[line].strip()whitespace_ind=code.find(' ')op=code[:whitespace_ind].strip()regs=code[whitespace_ind:].strip().split('...