Utility ROM to change the main memory of NES to any value and pass the value to other games.
Assemble using nesasm.
nesasm Main.asmbuild.bat is available for windows.
Burn to MMC3 cartridge with (512 bytes or more) SRAM.
| Key | Description |
|---|---|
| D-Pad | Move cursor |
| A + D-Pad Up | Decrement the value at the cursor position |
| A + D-Pad Down | Increment the value at the cursor position |
| Select + D-Pad Left | Move to previous page |
| Select + D-Pad Right | Move to next page |
| A + Select | Copy nibble at cursor position |
| B | Pastes the copied nibble at the cursor position |
| Start | Open menu |
| Key | Description |
|---|---|
| D-Pad Up | Move cursor up |
| D-Pad Down | Move cursor down |
| A | Confirm |
| Start | Close menu |
| B | Close menu |
Fill all memory (2048 bytes) with the value at the cursor position.
Fill page (64 bytes) with value at cursor position.
Initialize to a pre-defined value.
See also the User define section below.
It has 4 presets that can initialize memory to specific values.
Create UserDefine/blabla.asm file and edit UserDefine.asm file.
Or edit the NES file directly. (Slot1:0x0010-0x080F, ..., Slot4:0x1810-0x200F)
As a sample, memory definition is set in slot 1 to restart from World-T for SMB.
- None so far
Removing and inserting the cassette while the power is on may damage the NES main unit.
Use at your own risk.