Arcana/RAM map

The following article is a RAM map for Arcana.

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
  • #$0008: Attack
• $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
• $120D: Spirit's Element
• $120F: Guest1's Element
• $1212: Guest2's Element
• $1223: Rooks' Strength
• $1225: Spirit's Strength
• $1227: Guest1's Strength
• $1229: Guest2's Strength
• $123B: Rooks' Intelligence (reduces magic damage taken)
• $123D: Spirit's Intelligence
• $123F: Guest1's Intelligence
• $1241: Guest2's Intelligence
• $1243-$124D: Monsters' Intelligence (affects spell damage)
• $1253: Rooks' Endurance (reduces physical damage taken)
• $1255: Spirit's Endurance
• $1257: Guest1's Endurance
• $1259: Guest2's Endurance
• $126B: Rooks' Alertness (affects accuracy and evasion)
• $126D: Spirit's Alertness
• $126F: Guest1's Alertness
• $1271: Guest2's Alertness

• $1280-$12BF: Equipped items lists
  • Spaces are allocated for Rooks, Guest 1 and Guest 2. Two bytes per area, for item ID and character ID.
  • Equipped by flags:
  • #$00: Rooks
  • #$05: Teefa
  • #$06: Salah
  • #$07: Darwin
  • #$08: Axs

• $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.
  • #$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
• $1323: MP, Rooks
• $1325: MP, Spirit
• $1327: MP, Guest1
• $1329: MP, Guest2
• $1393: Max HP, Rooks
• $1395: Max HP, Spirit
• $1397: Max HP, Guest1
• $1399: Max HP, Guest2
• $139B: Max MP, Rooks
• $139D: Max MP, Spirit
• $139F: Max MP, Guest1
• $13A1: Max MP, Guest2

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)