Arcana/RAM map

The following article is a RAM map for Arcana.

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The list corresponds to RAM variables used by the game engine. They are generally accessed by LDA and STA instructions.

Battle

• $0624-$0626: Active spirit's HP (Format: BCD)
• $0A87-$0A8E: Current selected battle command (2 bytes per character)
  • #$0001: Main menu
  • #$0003: Items/Magic
  • #$0004: Cards
  • #$0005: Weapons
  • #$0007: Attack
• $11C3: Party condition (a series of words in the order: Rooks, Spirit, Guest1, Guest2, Enemies 1-8)
  • Odd byte:
    • #$00: Satisfactory
    • #$01: Deceased
    • #$02: Not Here
    • #$03: Paralyzed
    • #$04: Petrified
    • #$05: Confused
    • #$06: Sleeping
  • Even byte: #$01 indicates a party member
• $11F3-11FA: Order that spells hit the party (2 bytes per character)
  • #$0000: Upper left
  • #$0001: Upper right
  • #$0002: Lower left
  • #$0003: Lower right

• $120B: Rooks' Element/Race
• $120D: Spirit's Element/Race
• $120F: Guest1's Element/Race
• $1212: Guest2's Element/Race
• $1214: Enemy1's Element/Race
  • Bytes continue with Enemy2-8 in order
• $1223: Rooks' Strength
• $1225: Spirit's Strength
• $1227: Guest1's Strength
• $1229: Guest2's Strength
• $122B: Enemy1's Strength (table offset?)
  • Bytes continue with Enemy2-8 in order
• $123B: Rooks' Intelligence (reduces magic damage taken)
• $123D: Spirit's Intelligence
• $123F: Guest1's Intelligence
• $1241: Guest2's Intelligence
• $1243: Monsters' Intelligence (affects spell damage)
  • Bytes continue with Enemy2-8 in order
• $1253: Rooks' Endurance (reduces physical damage taken)
• $1255: Spirit's Endurance
• $1257: Guest1's Endurance
• $1259: Guest2's Endurance
• $125B: Enemy1's Endurance
  • Bytes continue with Enemy2-8 in order
• $126B: Rooks' Alertness (affects accuracy, evasion and critical hits)
• $126D: Spirit's Alertness
• $126F: Guest1's Alertness
• $1271: Guest2's Alertness
• $1273: Enemy1's Alertness
  • Bytes continue with Enemy2-8 in order

• $1283: Equipped weapons
  • Two bytes each, in order of Rooks, Guest 1 and Guest 2.
    • item ID / "Equipped by" flag
  • "Equipped by" flags:
    • #$00: Rooks
    • #$05: Teefa
    • #$06: Salah
    • #$07: Darwin
    • #$08: Axs
• $129B: Equipped armors
• $12B3: Equipped shields/accessories
• $12CB: Equipped rings

• $12E3: Accuracy modifier (concerns Acc. Increase All and Accuracy Impair)
  • There are 3 possible states: StatDown, Normal and StatUp. StatUp and StatDown cancel each other out.
  • Byte values are as follows:
    • #$01: Rooks' accuracy up
    • #$04: Spirit's accuracy up
    • #$10: Guest1's accuracy up
    • #$40: Guest2's accuracy up
    • #$02: Rooks' accuracy down
    • #$08: Spirit's accuracy down
    • #$20: Guest1's accuracy down
    • #$80: Guest2's accuracy down
• $12E7: Evasion modifier (concerns Dodge All and Offense Impair) (same flags)
• $12EB: Attack modifier (concerns Stomp All and Attack Impair) (same flags)
• $12EF: Defense modifier (concerns Wall All and Defense Impair) (same flags)

• $12F3: HP, Rooks
• $12F5: HP, Spirit
• $12F7: HP, Guest1
• $12F9: HP, Guest2
• $12FB: HP, Enemy1
  • Bytes continue with Enemy2-8 in order
• $1323: MP, Rooks
• $1325: MP, Spirit
• $1327: MP, Guest1
• $1329: MP, Guest2
• $132B: MP, Enemy1
  • Bytes continue with Enemy2-8 in order
• $1393: Max HP, Rooks
• $1395: Max HP, Spirit
• $1397: Max HP, Guest1
• $1399: Max HP, Guest2
  • (Next byte is Rooks' Max HP -> Enemies have no max HP/MP stat)
• $139B: Max MP, Rooks
• $139D: Max MP, Spirit
• $139F: Max MP, Guest1
• $13A1: Max MP, Guest2
• $13A9: Card inventory (Two bytes each, eight entries)
  • (item ID / quantity)
• $13B9: Item inventory (Two bytes each, 48 entries)
  • (item ID / quantity)
• $1419: Equipment inventory (Two bytes each, 48 entries)
  • (item ID / quantity)
• $1459: Rooks' spell list (Two bytes each, 32 entries)
• $1499: Spirit's spell list (Two bytes each, 32 entries?)
• $14D9: Guest1's spell list (Two bytes each, 32 entries?)
• $1519: Guest2's spell list (Two bytes each, 32 entries?)
• $1559: Current GP
• $155B: Current party (Two bytes each)
  • #$00: Rooks
  • #$01: Sylph
  • #$02: Marid
  • #$03: Dao
  • #$04: Efrite
  • #$05: Teefa
  • #$06: Salah
  • #$07: Darwin
  • #$08: Axs
  • #$09: (Empty slot)

Inventory

• $13A9-$13B7: Card inventory (2 bytes per slot, ID then quantity)
  • #$00: Empty slot
  • #$01: Wind Card
  • #$02: Earth Card
  • #$03: Water Card
  • #$04: Fire Card
  • #$05: Null Card
  • #$06: Fog Card
  • #$07: Call Amulet
  • #$08: Mirror Card (bugged)
• $13B9-$1418: Item inventory (2 bytes per slot, $30 slots: ID then #$00)
  • #$01: Return Ring
  • #$02: Water of Life (dummied)
  • #$03: Sleeping Bag
  • #$04: Tent
  • #$05: Strength Honey
  • #$06: Intelligence Honey
  • #$07: Endurance Honey
  • #$08: Agility Honey
  • #$09: Restore Honey
  • #$0A: MP Honey
  • #$0B: Herbs
  • #$0C: Medicine
  • #$0D: Silver Flask
  • #$0E: Gold Flask
  • #$0F: Maiden's Tears
  • #$10: Moon Oil
  • #$11: Enchanted Jewel (dummied)
• $1419-1458: Equipment inventory (2 bytes per slot, $20 slots: ID then Equipped By)
  • Equipped by flags:
  • #$00: Rooks
  • #$05: Teefa
  • #$06: Salah
  • #$07: Darwin
  • #$08: Axs
  • #$FF: Nobody

Actors Continued

• $1459-$1398: Rooks' spell list (2 bytes per entry, Spell ID followed by #$00)
• $1499-14D8: Spirit's spell list
• $14D9-1518: Guest1's spell list
• $1519-1558: Guest2's spell list
• $155D: Active spirit
  • $01: Sylph
  • $02: Dao
  • $03: Marid
  • $04: Efrite
  • $09: none
• $155F: Guest1
• $1561: Guest2
  • $05: Teefa
  • $06: Salah
  • $07: Darwin
  • $08: Axs
  • $09: none

Miscellaneous

• $15AF: Text being displayed
• $16F7: X position on map
• $16F9: Y position on map
• $16FB: Facing (#$00 North, #$02 East, #$04 South, #$06 West)
• $18E3-$18E8: Treasure chest flags (each chest has its own bit)