This is a file of hex values relating to the "optin" abilities that are used by
the land-rover, ice-digger and hydrofoil in Phantasy Star IV.

Part 1) Byte descriptions [part1]
Part 2) Byte list [part2]
Part 3) Notes [part3]


Part 1) Byte descriptions [part1]


!1: This is the name that the game displays when the optin is activated. Only
  here as a reference, it is not stored with this data (but quite nearby).
  Check the offsets list if you want to find this text.

!2: This number is not stored at this point in the rom, but it is used by the
  vehicle statistics to indicate which abilities are open to each vehicle.

!3: This is the offset at which this data can be found.

Byte 1: This is the "effect". Only two are used by vehicles.
  01: damage
  02: death

Byte 2: Relevant statistic. For vehicles, it's always Strength (aka 1).

Byte 3: Targetting byte. For vehicles, it's always all enemies (aka 2).

Byte 4: Power byte. Y'know. It's in hex. If you want to see the decimal value
  easily, check the .htm version.

Byte 5: This is the save. It's sort of the opposite of power; each ability is
  associated with the means by which to resist it. This is either subtracted
  from the damage or affects the chance to work for a status attack.
  02: mental
  06: defense
  07: magic defense

Byte 6: Elemental. You ought to be used to this. Here's my naming system:
  01: Physical (others may call this force)
  02: Energy (others may call this radiation or laser)
  03: Fire
  04: Gravity
  05: Water (others may call this ice)
  06: Anti-Evil (others may call this energy or holy)
  07: Electric (others may call this lightning)
  08: Holyword (others may call this holy)
  09: Brose (others may call this anti-mech)
  0A: Biological (others may call this death or status or anti-bio)
  0B: Psychic (others may call this status or death)
  0C: Mechanical (others may call this anti-mech)
  0D: Efess (others may call this holy or anti-evil)
  0E: Destroy (others may call this death)

Byte 7: Seemingly always 0. Makes everything nicely formatted, at least.

Byte 8: Seemingly always 0. Makes everything nicely formatted, at least.


Part 2) Byte list [part2]

!1       !2  !3      1   2   3   4   5   6   7   8

Cluster  01  285670  01  01  02  80  06  01  00  00
Gravitn  02  285678  01  01  02  F0  07  04  00  00
Th.Grid  04  285680  01  01  02  00  07  07  00  00
X-Burst  08  285688  01  01  02  F0  07  02  00  00
Napalm   10  285690  01  01  02  80  07  03  00  00
Nothing  20  285698  01  01  02  80  06  01  00  00
N-Spher  40  2856A0  02  01  02  20  02  0E  00  00
Nothing  80  2856A8  01  01  02  80  06  01  00  00

!1       !2  !3      1   2   3   4   5   6   7   8


Part 3) Notes [part3]

-I sure hope that those Nothing abilities have animations so we can add new
  firepower! That would be awesome. Unfortunately I've had trouble assigning
  these nothing abilities to the vehicles.


This document's current home is http://www.wrftpb.com/psiv/ ,
and was made by Kyle "FreshFeeling" Chapman in November, 2005.
Last updated December 20, 2005.