This article details various glitch meta-map scripts for the Power Plant and Route 7's gate in Pokémon Red and Blue. The script is controlled by memory address D663.
At Power Plant
0x01: Special stat encounter script (see Trainer escape glitch) 0x02: Unknown/game does not freeze. Reset to 0x00 0x03: Trainer challenge music followed by invalid opcode (0xEC) at 1F:62DF (freeze, and theoretical rst 38 Virtual Console freeze) 0x04: See 0x03 0x05: See 0x03 (no challenge music) 0x06: See 0x03 (no challenge music) 0x07: 0x03 effect without having to press A or B 0x08: See 0x07 0x09: Trainer challenge music may play followed by a battle sound effect, followed by VRAM execution of 8000 (likely rst 38 freeze) 0x0A: May cause corruption of the player's sprite, tileset, map before a VRAM execution of 8000 (likely rst 38 freeze) 0x0B: VRAM execution of 8000 (likely rst 38 freeze) 0x0C: See 0x0B 0x0D: See 0x0B 0x0E: See 0x0B 0x0F: See 0x0B 0x10: See 0x0B 0x11: See 0x0B 0x12: Arbitrary code execution (D7D3) 0x13: Invalid opcode (0xF4) at 29:63B7 (freeze). On Virtual Console might cause execution of VRAM:8000 (likely rst 38 freeze) 0x14: See 0x13 0x15: See 0x13
At Route 7 gate
0x01: Reset script to 0x00 0x02: Game may freeze with no music, but normal looking screen other than guard missing 0x03: ACE (CBD7) 0x04: Unknown effect/game may not freeze 0x05: Arbitrary code execution (ECH0: EA20 i.e. CA20) 0x06: ACE (CCD3) 0x07: Controls except for Start may lock up unless on menu (can open and close menu with Start successfully) 0x08: Invalid opcode (0xD3) at 0:38EB. On Virtual Console, may not freeze and reset script to 0x00 0x09: ACE (SRAM: AFCD) 0x0A: See 0x02 0x0B: ACE (ECH0: EAC2 i.e. CAC2) 0x0C: ACE (CD3B) 0x0D: ACE (ECH0: FAC9 i.e. DAC9) 0x0E: ACE (D728) 0x0F: VRAM execution of 8000 (likely rst 38 freeze) 0x10: See 0x02 0x11: See 0x0F 0x12: ACE (SRAM: BFCD) 0x13: ACE (D034) 0x14: Invalid opcode (0xD3) at 0:083E (freeze). Possible freeze on Virtual Console. 0x15: Unknown effect/game may not freeze
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