PCSpim requires all assembly mnemonics and registers specifiers to be written in lower

case. PCSpim also requires that $$0$ be used when referring to the $ zero register. If you

encounter syntax errors, please refer to Appendix B to obtain the proper syntax of the

various instructions. Pay particular attention to the syntax of the lui instruction.

Once you have finished typing your code, you are ready to simulate it$.$ If you are able to load

an assembly file into PCSpim without encountering any problems, the code is syntactically

correct.

Before simulating your program, make sure the following boxes in the simulator settings

window are unchecked: bare machine, delayed branches, delayed load, load exception file.

By default, all code in PCSpim starts at address $0$x$0040000$ and all data are stored starting at

location $0$x$10010000.$

Before you simulate your program, you must initialize the program counter to the

appropriate value. To initialize the program counter of the provided sample program, you

need to open PCSpim $$ click on "Simulator" from the menu $$ Set Value $$ Register Name:

$PC$ Value: $000400000.$ The value differs from one program to another.

You also have to change a few settings regarding how your program runs on the simulator.

To do that, go to the program menu: Simulator $->$ Settings. Uncheck the following: Bare

Machine, Delayed Branches, Delayed Loads.