The trainer is a relative-value memory search ("Code Finder"): you never need to know a value's absolute number, only whether it went up or down. It runs inside the PAR NMI handler every frame, so it can watch the game's work RAM live. For the full disassembly-level mechanics (input decode, comparison modes, the WRAM scan, and the LED engine) see ROM disassembly section 20.
The trainer is operated entirely with controller-1 button combinations during
the game. Hold Select (the default trainer button; switchable to Start in
the options) and tap the second button:
| Combination | Function | Internal |
|---|---|---|
Select + X |
Start trainer / "same value as before" | $61AE = 0 |
Select + Y |
"Value lower than before" | $61AE = 1 |
Select + A |
"Value higher than before" | $61AE = 2 |
Select + B |
"Absolutely different value" | $61AE = 3 |
Select + R |
Activate the found parameter | jsr $74E7 |
Select + Start |
Clear the trainer | jmp $749F |
A typical search: start with Select+X, change the value in-game, then press
the combo matching the direction it moved (lower/higher/same/different). Slow
blinking means several candidates are still in play. Repeat until LED 2 blinks
fast (a single candidate remains), then Select+R to freeze it as a cheat.
Not every game is trainer-compatible. If the tracked value is relocated or double-buffered, the search never converges and LED 2 stays on. This is a property of the game, not a fault of the adapter.
Multiple candidates remain after the first comparison — LED 2 blinks slowly. Keep narrowing the search by repeating the lower/higher/same/different combo.
Only one candidate remains — LED 2 blinks fast. Press Select+R to freeze
this address as an active cheat.
