star.s - Draw A Star On The C64 Screen
Joonas Viskari 2025-12-09
Assembler: 64tass
Entry for the Vintage Computing Christmas Challenge 2025
https://logiker.com/Vintage-Computing-Christmas-Challenge-2025
This program draws a star pattern on the C64 screen using KERNAL routines.
The star is drawn in quadrants and mirrored to create a full star shape. The program starts with a BASIC stub to run the assembly code.
The star pattern is defined in the data section. The program uses KERNAL routines for screen manipulation and character output.
The star is drawn row by row, expanding from the center. Finally, the star is mirrored vertically to complete the shape.
Program image: 143 bytes (load address+basic stub+code)
Code size: ($080d..$088d = 129 bytes)