mips32

I am trying to add jal functionality to the following but I am stuck with how does it work. I know that it stores the old PC+4 value in the $ra register and then transfers the control to the function which transfers back the control by return $ra but how do I implement it in the hardware? There are two things you need to do. Add a mux at the input of the Registers so that the PC+4 value can be selected as the data to be written. With the appropriate control signal this will allow you to write PC+4 as an additional effect of the "jal $ra" instruction. Implement the return "jr $ra" instruction.

I need to translate this C code to MIPS assembly. Here is the C code: int tmp = 0; for (int j = 0; j < 15; ++j) tmp = tmp * 2 + 3 This is my MIPS assembly code. Is it a correct translation? If you see any mistakes I would really like to know. # tmp = $v0 # j = $t0 .globl main main: li $v0,0 loop: bgt $t0,15,exit addi $t0,$t0,1 mul $t1,$v0,2 add $v0,$t1, 3 j loop exit: Your loop goes from 0 to 14, so your bgt instruction should be: bgt $t0,14,exit I think. . You don't set j ($t0) to zero before the loop. Raul Batalha .data mensage: asciiz "Text Test" newline: asciiz "\n" .text # tmp = $v0 # j =

The Background I am a student just beginning to learn MIPS for one of my courses, and my professor is not allowing the usage of pseudo-instructions such as Load Address ( la ) in our code. I am wondering what an example of the correct usage of standard instructions would look like to store the address of a declared variable into a register for use later in the code. My Solution I have currently been attempting to use this code, though I am getting a syntax error in the lui instruction. main: .data Array: .space 80 #Declares that Array will hold 20 integers .text lui $s0, Array #loads most

C++ Program # include < iostream > # include <string > using namespace std; int main () { int resistance ; // in Ohms string partNum ; // Part Number cout << " Enter resistance : " << endl ; cin >> resistance ; switch ( resistance ) { case 3 : partNum = " OD30GJE "; break ; case 10 : partNum = " OD100JE "; break ; case 22 : partNum = " OD220JE "; break ; default : partNum = "No match "; break ; } cout << " Part number : " << partNum << endl ; return 0; } Translate the C code to MIPS assembly code, add to your code the capability to match the closest resistor. Be sure to use the jr instruction

I'm trying to learn MIPS assembly language by myself using MARS simulator . For didactic reasons I'm limiting myself to not using pseudo-instructions. While trying to get the address of some data into a register, I ran into a problem because I cannot use la . I tried using lui in combination with ori , the same as if I was to load a number directly, to no avail: .data arr: .byte 0xa1 .byte 0xb2 .byte 0xc3 .byte 0xd4 .byte 0xe5 .byte 0xf6 .byte 0x7a .byte 0x8b .byte 0x9c .byte 0xad .text lui $s0, mem # <--- mars just gives me errors here :( ori $s0, mem # ?? ... Is this doable using