README

VazoVM

A small Virtual machine and assembler Here is a small example I made for learning exercise documentation will follow soon as well as other updates.

Using the assembler

Compile vasm.lpi in Lazarus or free pascal open a command prompt and type vasm table.txt table.vzo the vzo file is the one that works with the VM

Using the VM

Drop the vzo file made above onto the Vazo.exe table.vzo file this will execute the file. If your unsure I left two batch files in each of the folders with an example. You can also find many more examples in the Examples folder.

Simple while loop example

PUSH 10
STORE A

Loop:
 LOAD A
 PUSH 0
 IfIcmplt end
 LOAD A
 Dec A
 Syscall 2
 goto loop

end:
HLT

Example of max number

# Find the max of two numbers

PUSH 8
STORE A
PUSH 9
STORE B
PUSH 0
STORE C

LOAD A
LOAD B
Ificmpgt max

LOAD B
STORE C
GOTO END

Max:
 LOAD A
 STORE C
 GOTO END

END:
 LOAD C
 SYSCALL 2
HLT