VC³ 2023
The first year Logon System entered the challenge.
SIZE CODING
Optimisations — the Vintage Computing Christmas Challenge
Since 2023, Logon System members have taken part in the Vintage Computing Christmas Challenge (VC³), a friendly yearly contest run by Logiker. It's a pure exercise in extreme Z80A optimisation: squeeze the most out of the least, on real vintage silicon.
VC³ 2024
Overflow also wrote up the coding tricks behind that year's entry on his own blog.
Overflow's coding tips write‑up →
VC³ 2025
The latest edition of the challenge.
