Vintage Computing Christmas Challenge 2023

Author: JL and LP
Category: Christmas Challenge
System:   Nintendo Entertainment System / Famicom
Language: Family BASIC
Len source code: 144 bytes
Len exe file:    N/A
Len code only:   N/A
Instructions:
1) Install and run Nintaco.
2) Load Family BASIC ROM.
3) Click Machine -> Family BASIC -> Load Tape... and select the provided tape image.
4) Copy the word "LOAD" with a carriage return from somewhere else, then in Nintaco click Machine -> Family BASIC -> Type Paste.
5) Click Machine -> Family BASIC -> Play Tape. A LOADING message will appear followed by OK.
6) Click Machine -> Family BASIC -> Stop Tape.
7) Copy the word "RUN" with a carriage return from somewhere else, then in Nintaco click Machine -> Family BASIC -> Type Paste.
Description:
1) Read starting X position with Y at the bottom
2) Draw 36 asterisks, subtracting or adding X,Y positions within bounds
3) Repeat two more times
Comments:
1) Nintendo!