LilChip3000 is a C based virtual machine. It is currently very limited and uses a custom instruction set. It has 6 general purpose registers as well as 3 scratch registers, the instrustion pointer, stack pointer, and the link register. The "compiler" is written in python. It takes the assembly like syntax of the source code and translates the instructions and registers into their corresponding integers.
The virtual machine uses an assembly like syntax (non case sensitive) to write programs:
PSH 5 ; Push 5 onto the stack
PSH 6 ; Push 6 onto the stack
ADD ; Add the two numbers on the top of the stack and push the result
POP ; Pop the top item on the stack and print it to the console
Use the compile.py script to "compile" the code
python compile.py myProgram.txt
You can specify an output file name as the second argument. Otherwise, your program will be saved as program.chip. We call this a chip file.
Compile the virtual machine using the provded makefile. You can then run your compiled program using the following:
./LilChip3000 program.chip
PSH 10 ; \n
PSH 33 ; !
PSH 100 ; d
PSH 108 ; l
PSH 114 ; r
PSH 111 ; o
PSH 87 ; W
PSH 32 ; ' '
PSH 111 ; o
PSH 108 ; l
PSH 108 ; l
PSH 101 ; e
PSH 72 ; H
SET B 13 ; Loop 13 times (i)
Loop: POPR A
PUTC A
SUBI B 1 ; i--
JNZ B Loop
HLT ; Goodbye...
or...
====
string hello "Hello, World!\n"
====
LDA A hello
PUTS A
HLT
For full documentation on the instruction set for the LilChip3000, please see the wiki