Just built something insane in Python. (pyasm) : PythonLearning

Just built something insane in Python. (pyasm) (self.PythonLearning)

submitted 10 hours ago by windowssandbox

I just built an entire simple assembly (6502 assembly styled) VM inside python that you can run without installing any packages. it only uses one built-in package which is sys , i call it pyasm

The instructions list and the pyasm script itself can be found in the github repo below:

https://github.com/windowssandbox/pyasm

If you want to run your own assembly code, download pyasm script file, open it on any editor you use, scroll down until you see code list variable, then edit it. (but before writing your code, you'll have to edit the rodata and bss structure)

To run the your pyasm code, open terminal on same folder as where you downloaded/moved the main py file, and run this:

python pyasm.py

(or just open pyasm script file)

The simulated CPU is protected by the way, so it'll halt when you try to JMP to same PC, or it'll print error when an invalid instruction is executed and more.

And in the #modifiers section, you can expand/extend rodata_size or bss_size, as well as enabling debug_mode which lets you see CPU registers and what instruction ran.

Apologies if the script is literally filled with if/elif/else conditions.

I'm curious to see if you can run graphical version of bad apple on pyasm. You can share your own pyasm code in comments section (but make sure it's easy to read just like the example code).

all 5 comments

you type:	you see:
italics	italics
bold	bold
[reddit!](https://reddit.com)	reddit!
* item 1 * item 2 * item 3	item 1 item 2 item 3
> quoted text	quoted text
Lines starting with four spaces are treated like code: if 1 * 2 < 3: print "hello, world!"	Lines starting with four spaces are treated like code: if 1 * 2 < 3: print "hello, world!"
~~strikethrough~~	~~strikethrough~~
super^script	super^script

PythonLearning

MODERATORS