Hello World Everything

Hello world programs for various consoles and handhelds, the focus is 8-bit but anything i get i'll throw here

Guidelines / rules

• Has to be written entirely in assembly.
• Avoiding built-in routines if possible.
• On bare metal, no operating systems.
• 7-bit ASCII support - either partial (64 first chars past non-printables) or full 96 chars.

Supported systems

• Fairchild Channel F
• Atari 2600
• SEGA Master System