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Christmas Diamonds

Diamond for Atari 8-bit computers in 6502 assembly

Author: dmsc
Category: Christmas Challenge
System:   Atari 8-bit
Language: Assembler
Len source code: 662
Len exe file:    37
Len code only:   31
Instructions:
  With the provided ATR floppy disk image, just boot and type DIAMOND to run
  the program.

Description:
  This program uses a table with values:

    Table[] = 0  1  2  3  2  1  0  1  2  3  2  1  0  1  2  3  2 ...

  Then, for each coordinate (X,Y), we draw a star where Table[X] == Table[Y+3]

  To assemble the program, you can use the MADS assembler.

Comments:
  To minimize size, this program directly calls the OS editor PUT routine, this
  means it is only compatible with the XL OS used in Atari XL and XE computers.