Yu-Gi-Oh! Duel Monsters 4: Kaiba Deck:RAM map

SRAM

Address Size    Description
------- ----    -----------
 A4B7     2     Deck Capacity (SRAM) (Copy)
 B1AF     2     Deck Capacity (SRAM)

WRAM

Address Size    Description
------- ----    -----------
 C428     2     Pointer to the Music data being read
 C42A     1     ROM Bank to the Music data being read
 C42C     2     Music pointer
 C42E     2     Music ROM Bank
 C5AE     1     ?
 C5D9     1     Field ID
 C5B8     2     Life Points (Player)
 C5BB     2     Life Points (CPU)
 C5F8     1     ? (related to deck)
 C5FA    80     Player's deck
 C69E     2     Current card ID displayed
 C6A3     2     Current card ID displayed (copy)
 C6A5     1     Current Column
 C6A6     1     Current Row
 C6A7     2     Current ATK displayed
 C6A9     2     Current DEF displayed
 C6AB     1     Current Type displayed
 C6AC     1     Current Cost displayed
 C6AD     1     Current Level displayed
 C6AE     1     Current Attribute displayed
 C6AF     1     Card Effect IDs (Magic Ritual Trap)
 C6B0     1     Card Effect IDs (Monster)
 C793    15     CPU's Hand + cards status
 C7CC    15     Player's Hand + cards status
 C7DB     1     Current Column
 C7DC     1     Current Row
 C7DD    15     Current card + card status
 C8B4     1     Menu ID (main menu)
                0x00: Campaign
                0x01: Versus
                0x02: Password
                0x03: Duel Records
                0x04: Trade
                0x05: Sound Test
                0x06: Character Viewer
 C8D7     1     ?
 C8D8     1     ?
 C8D9     1     ?
 C8DA     1     ?
 C8DB     1     ?
 C8DC     1     ?
 C8F6     2     Current card (copy)
 C957    48     Duel Records (battles)
 C989    48     Duel Records (wins)
 CADD     2     Player's Graveyard
 CADF     2     CPU's Graveyard
 FFD7     2     Deck Capacity (HRAM)