NOTE:
There is a problem with the mixal IN and OUT commands. It compiles but it can't find the in/out devices so you can't give it input form outside the program (only with assignment) or print any output.

Requirements:
You need to have flex installed if you're on debian linux write:

sudo apt-get update
sudo apt-get install flex

Also, you need to have gnu bison intalled Finally, you need the GNU MIX Development Kit (MDK) to compile and run the mixal code you can intall it with:

sudo apt update
sudo apt install mdk

About the code:

To make the parser run:

bison -d myparser.y

To make the flexer run:

flex mylexer.l

To create the executable run:

gcc myparser.tab.c lex.yy.c parseTree.c mixal.c symbolTable.c -lfl

Now run the executable a.out with a test, e.g.:

./a.out < tests/test10.in

There are two resulting files:

• result.mixal that has the generated mixal code
• tree.txt that has the parse tree

To run the mixal code run:

mixasm result.mixal

And then to interactively check the registers run:

mixvm result.mix 

and then inside the vm write:

run

and you can check the registers using

pmem <register number>

Or to run it non-interactively.:

mixvm -r result.mix