Submit for the Vintage Computing Christmas Challenge

Rules

• Do not reveal the code or even the exact size of the code to anyone. This shall be a personal challenge.
• Submissions shall be final. 

Format

• Submit the following within one zip file:
  • an image (screenshot) of the result (of the object) [e.g. result.png]
  • Runnable file (e.g. compiled assembler code, BASIC file that runs on host, a.s.o.) [e.g. star.prg, star.bin, star.com, ...]
  • Source code:
    • source code as readable text file (e.g. BASIC code, assembler code, etc.) [e.g. source.txt]
    • an image of the source code listed (on the native machine or on the machine coded); can be integrated with the image of the result (optional) [e.g. source.png]
  • file_id.diz:
    • see next chapter below
  • Zip file could be named like this: <username>_<system>_<language>_vc3-2023.zip, e.g. joe_cpc_basic_vc3-2023.zip

Template for file_id.diz (download)

<Name of Release>

Author: <Name of Author or Handle / Group>
Category: <Christmas Challenge or Wild>
System:   <Atari, C64, Spectrum ZX80, ...>
Language: <BASIC, Assembler, (include the version/variant, ...>
Len source code: <# bytes>
Len exe file:    <# bytes>
Len code only:   <# bytes> (net code size; subtract the bytes for header/start address; assembler: also subtract the BASIC stub)
Instructions:
<how to run the code in an emulator>
<e.g. which emulator to use and what to do; could be as simple as: Install vice, drag and drop the prg file into it>
Description:
<how the code works>
Comments:
<anything left to say>

Submission

The dates and website for submissions are announced on the main page of the event.

Sample Code

 10 print"{clear}"
 20 print""
 30 print""
 40 print""
 50 print"       *     *     *
 60 print"      * *   * *   * *
 70 print"     *   * *   * *   *
 80 print"    *     *     *     *
 90 print"     *   * *   * *   *
100 print"      * *   * *   * *
110 print"       *     *     *
120 print"      * *   * *   * *
130 print"     *   * *   * *   *
140 print"    *     *     *     *
150 print"     *   * *   * *   *
160 print"      * *   * *   * *
170 print"       *     *     *
180 print"      * *   * *   * *
190 print"     *   * *   * *   *
200 print"    *     *     *     *
210 print"     *   * *   * *   *
220 print"      * *   * *   * *
230 print"       *     *     *
333 goto 333

This version is not highly optimized.