River City Ransom/ROM map

The following article is a ROM map for River City Ransom.

0x005CBB = Room captions - Array of Page1Text indexed by RoomNumber

0x00A4F9 = Array[128] of pointer to item records indexed by ItemNumber

Each item record:
* [variable] item name terminated by 05
* [03 bytes] YZ WX 0V: item cost $VWX.YZ (digits are BCD)
* [03 bytes] ?? ?? ??: unknown
* [01 byte] Abilities enhanced bitmask:
    * 7 = punch
    * 6 = kick
    * 5 = weapon
    * 4 = throw
    * 3 = agility
    * 2 = defense
    * 1 = strength
    * 0 = will power
* [01 byte] Status enhanced bitmask:
    * 7 = stamina
* [variable] Variable length array of ability values, in the order above.
  Array element is present only if corresponding bit is set above.