Help Needed for 16-bit ALU Design (MIPS)

[esmeco]

Homework Statement

Hello!


I need to implement a set greater than and a branch less or equal in my 16 bit ALU design(MIPS architecture),but I'm having many difficulties.

Homework Equations

The Attempt at a Solution

I know that in a set greater than a>b equals a-b>0 ,but I don't know how to work out from that and implement it in my design(which type of gates to use and that).
The same happens with branch less or equal.I already have a branch equal,but I don't know how to use it in order to get a ble.
Any help is really appreciated!

 

[esmeco]

These are,respectively the implementation of the sgt instruction and ble instruction:


http://img174.imageshack.us/img174/715/sgtop2.jpg


http://img405.imageshack.us/img405/6933/blegy6.jpg

 

[piercas]

I understand the challenges you are facing in implementing a set greater than and a branch less or equal in your 16-bit ALU design. These operations can be complex and require careful consideration in terms of design and implementation. I would recommend breaking down the problem into smaller steps and approaching it systematically.

First, make sure you have a thorough understanding of the MIPS architecture and the specific requirements for these operations. This will help guide your design decisions and ensure that your ALU meets the necessary specifications.

Next, consider the logic behind a set greater than and branch less or equal operation. As you mentioned, a set greater than operation can be represented as a-b>0, where a and b are the inputs. This means that the output will be a single bit (1 or 0) indicating whether a is greater than b. Similarly, a branch less or equal operation compares two inputs and branches if the first input is less than or equal to the second. This also results in a single bit output.

Based on this logic, you can start designing the necessary circuits using basic logic gates such as AND, OR, and NOT gates. You may also need to use additional components such as multiplexers and adders to perform the necessary calculations.

I would also suggest looking into existing designs and resources for similar operations, as they can provide valuable insights and guidance. Additionally, simulation tools can be helpful in testing and troubleshooting your design before implementing it in hardware.

Overall, designing a 16-bit ALU can be a challenging task, but with careful planning and a step-by-step approach, you can successfully implement the set greater than and branch less or equal operations in your design. I wish you all the best in your project and hope this response has been helpful.