There are two techniques described in the article (scroll down to the 'Super Secret Worlds' section for more details):
- Remove the SMB cart during gameplay. Insert a Tennis cartridge, reset, play a bit, then remove the cart. Insert SMB, reset, then use the A+Start stage select to begin play in a corrupted world.
- Version 2 uses a similar method, but involves the Family BASIC cart, keyboard, and a snippet of BASIC code executed during play:
Code: Select all
10 FOR I=&H7D3 TO &H7DC:POKE I,0:NEXT
20 POKE &H7FF,&HA5
30 INPUT "WORLD=";A
40 POKE &H7FD,A+255AND255
Anyone heard of this before? Technique 2 seems almost like a homemade Game Genie. Could this be replicated on a top-loader (or a CIC-disabled front-loader)?
And, more importantly, how does this work? I find this fascinating.