Atari Snowflake

Author: Ken Jennings
Category: Christmas Challenge
System:   Atari 8-bit
Language: Load File Format
Len source code: 9503 (I like to comment)
Len exe file:    271
Len code only:   249 (minus 22 bytes of file meta data) 
Instructions:
Should run on any Atari 8-bit just like any other .XEX file.
Altirra 4.31 used for testing and screen grabs.
Description:  The "program" exploits the Atari's executable Load File Format to load screen data and a display list into specific memory, and then loads values into OS registers to start the display and change colors.
Comments:
There is only one machine language instruction in the "program".  A JMP to prevent returning to DOS immediately after loading the file.

The 01_DisplayableDocumentation file breaks down the memory usage in the executable file.

The apparent display should require 380 bytes (19 lines of 20 bytes each).  However, the display list reduces the memory by reusing the same memory for the lines in the top half and the bottom half that appear identical. 

I like comments.  No point in even discussing the source file size.