Attacks / Tech Scripts

1 Charm Data
2 Pointers
3 Notes on Tech Modification
4 MP and Tech Targetting Modification
5 Tech Bit Locations - Memory Value

Charm Data[edit]

Geiger

01E9D5 - Beginning of charm processing
0C235C - Charm chance

Also of note, normally, Ayla has a fixed 27.7% chance to charm an item. With the Charm Top, this chance is tripled to just over 82.4%.

All determination of whether you get the item or not is done well before Ayla even fluffs her hair.

Have not checked into Twin Charm yet.

JLukas

Interesting stuff. From watching what's getting stored to 7EAEE7 and 7E0016, Twin Charm gets the byte at 0C2464 ($50). In other words, 31.4% Hmm, is that correct? That isn't much of an upgrade.

Breakpoint C1D5EF is worth noting. When you perform an attack or tech, it loads 12 bytes of data (starting at 0C213F), the second of which is the % chance?

Trying to break down the Charm code further:

C1E9D5   C1E9DA   CODE   N   Start of Charm processing
C1E9DB   C1E9DE   CODE   N   Check if Charm Top is equipped
C1E9DF   C1E9DF   DATA   N   Charm Top item index ($A5)
C1E9E0   C1E9E1   CODE   N   Check if Charm Top is equipped
C1E9E2   C1E9E9   CODE   N   Charm Top equipped, increases Charm chance to
82.4%

C1EA27   C1EA3F   CODE   N   Charm - stolen bit $80 and gets item reward index
C1EA40   C1EA56   CODE   N   Charm - stolen bit $40 and gets item reward index

(these last two lines are for resetting the enemy stolen bit in memory, so that you can't steal the same item more than once from a single enemy)

Geiger

31.6% to be more precise (remember, 0 is also a success). Yeah, ye olde Twin Charm is not so hot. But if the Charm Top still counts (and I am guessing it does), the highest steal chance is 94.1%. Probably great for single charm chances, like boss fights.

---

As for why its not much of an upgrade, with the Charm Top tripling the result, the maximum value without overflow is 0x55. A better solution would probably have been to up the base result slightly, make Twin Charm more effective, and only doubled the effect with Charm Top.

---

0C2A33 - Chance to get rare charm (aka normal drop)?

Code is a bit confusing, but this appears to be the value loaded and checked against to determine if a Charm attempt results in a charm or rare charm.

For a 100% base Charm chance, use this code: CC235C FF

Pointers[edit]

Pointers are at CD5EC6 (2 bytes each) Data is at CE0380

The first attack and script is Crono's regular sword swipe, and I'm pretty sure these cover enemy attacks as well.

I think each script begins with 90 XX 90 XX (or something similar).

CE0000 - Pointers to Enemy Death Scripts (2 bytes each) CED428 - Enemy death scripts (Hetake uses this script)

D10000 - Pointers to attack graphic effects (2 bytes each((the slash of crono's sword for example...))

CD686E - pointers to attack graphic effects palettes (2 bytes each)

Notes on Tech Modification[edit]

Party does Party techs (Difference from the one listed below is sometimes this affects certain enemies): 7EAE93XX (XX list Index A at bottom) Certain moves may freeze or glitch

Enemies do Boss's Techs (Affects only enemies): 7EAEE4XX (XX can be anynumber mess around with it for different results)

Does move equal to XX( Affects only party): 7EB18CXX (See index A at bottom for list of XX) Certain moves may freeze or glitch; Example is pogozo dance with anyone and magus, interestingly i think this is because he doesnt have a boggy sprite while all the other characters possess some form of dancing sprite.

Use Enemy Moves: 7EAE9106 (Certain moves may freeze or glitch)

Player 1 does all techs/atks no matter who selects commands: 7EAE9100 (May Freeze on some moves)

Player 2 does all techs/atks no matter who selects commands: 7EAE9101 (May Freeze on some moves)

Player 3 does all techs/atks no matter who selects commands: 7EAE9102 (May Freeze on some moves)

Always a critical hit for party: 7ECC8702 (Easiest to see with frog and chrono)

Index A - List of Party Moves to XX

01 - Cyclone 02 - Slash 03 - Lightning 04 - Spincut 05 - Lightning 2 06 - life 07 - confuse 08 - Luminaire 0A - Provoke 0B - Ice 0C - Cure 0D - Haste 0E - Ice 2 0F - Marle's Cure 2 10 - Marle's Life 2 11 - Flame Toss 12 - Hypno Wave 13 - Fire 14 - Napalm 15 - Protect 16 - Fire 2 17 - MegaBomb 18 - Lucca's Flare 19 - Rocket Puch 1A - Cure Beam 1B - Laser Spin 1C - Robo Tackle 1D - Heal Beam 1E - Uzzi Punch 1F - Area Bomb 20 - Robo's Shock 21 - Slurp 22 - Slurpcut 23 - Water 24 - Heal 25 - Leap Slash 26 - Water 2 27 - Frog's Cure 2 28 - Frog Summon 29 - Kiss 2A - Rollo Kick 2B - Cat Attack 2C - Rock Throw 2D - Charm 2E - Tail Spin 2F - Dino Tail 30 - Triple Kick 31 - Lightning 2 32 - Ice 2 33 - Fire 2 34 - Dark Bomb 35 - Magic Wall 36 - Dark Mist 37 - Black Hole 38 - Dark Matter 39 - Aura Whirl 3A - Dual Ice Slash 3B - Dual Ice Slash 2 3C - Dual Flame Whirl 3D - Dual Fire Sword 3E - Dual Fire Sword 2 3F - Dual Rocket Roll 40 - Dual Max Cyclone 41 - Dual Super Volt 42 - Dual X-Strike 43 - Sword Stream 44 - Dual Spire 45 - Dual Drill Kick 46 - Dual Volt Bite 47 - Dual Falcon Hit 48 - Dual AntiPod 49 - Dual AntiPod 2 4A - Dual AntiPod 3 4B - Dual Aura Beam 4C - Dual Ice Tackle 4D - Dual Cure Touch 4E - Dual Ice Water 4F - Dual Glacier 50 - Dual Double Cure 51 - Dual Twin Charm 52 - Dual Ice Toss 53 - Dual Cube Toss

54 - Dual Fire Punch 55 - Dual Fire Tackle 56 - Dual Double Bomb 57 - Dual Flame Kick 58 - Dual Flame Whirl 59 - Dual Blaze Kick 5A - Dual Blade Toss 5B - Dual Bubble Snap 5C - Dual Cure Wave 5D - Dual Boogie 5E - Dual Spin Kick 5F - Dual Beast Toss 60 - Dual Slurp Kiss 61 - Dual Bubble Hit 62 - Dual Drop Kick 63 - Dual Red Pin 64 - Dual Line Bomb 65 - Dual Frong Flare 66 - Triple Delta Force 67 - Triple Life Line 68 - Triple Arc Impulse 69 - Triple Gatling Kick 6A - Triple Fire Zone 6B - Triple Delta Storm 6C - Triple Final Kick 6D - Triple Triple Raid 6E - Triple Twister 6F - Triple 3D Attack 70 - Triple Dark Eternal 71 - Triple Omega Flare 72 - Triple Spin Strike 73 - Triple Pogozo Dance 74 - Triple Grand Dream 75 - 76 - 77 - 78 - 79 - 7A - Angel Attack 7B - 7C - 7D - 7E - 7F - 80 -

Credit goes to chakrafire*

MP and Tech Targetting Modification[edit]

THIS IS HEADERED ROM! REMOVE 200 BYTES!

MP cost of techs begins at C273C, 1 byte each. Crono: C273C: Cyclone C273D: Slash C273E: Lightning C273F: Spincut C2740: Lightning 2 C2741: Life C2742: Confuse C2743: Luminaire Marle: C2744: Aura C2745: Provoke C2746: Ice C2747: Cure C2748: Haste C2749: Ice 2 C274A: Cure 2 C274B: Life 2 Lucca: C274C: Flame Toss C274D: Hypno Wave C274E: Fire C274F: Napalm C2750: Protect C2751: Fire 2 C2752: Mega Bomb C2753: Flare Robo: C2754: Rocket Punch C2755: Cure Beam C2756: Laser Spin C2757: Robo Tackle C2758: Heal Beam C2759: Uzzi Punch C275A: Area Bomb C275B: Shock Frog: C275C: Slurp C275D: Slurp Cut C275E: Water C275F: Heal C2760: Leap Slash C2761: Water 2 C2762: Cure 2 C2763: Frog Squash Ayla: C2764: Kiss C2765: Rollo Kick C2766: Cat Attack C2767: Rock Throw C2768: Charm C2769: Tail Spin C276A: Dino Tail C276B: Triple Kick Magus: C276C: Lightning 2 C276D: Ice 2 C276E: Fire 2 C276F: Dark Bomb C2770: Magic Wall C2771: Dark Mist C2772: Black Hole C2773: Dark Matter

Tech effects start at C1CCD, 2 bytes each. Crono: C1ACD: Cyclone C1CCF: Slash C1CD1: Lightning C1CD3: Spincut C1CD5: Lightning 2 C1CD7: Life C1CD9: Confuse C1CDB: Luminaire Marle: C1CDD: Aura C1CDF: Provoke C1CE1: Ice C1CE3: Cure C1CE5: Haste C1CE7: Ice 2 C1CE9: Cure 2 C1CEB: Life 2 Lucca: C1CED: Flame Toss C1CEF: Hypno Wave C1CF1: Fire C1CF3: Napalm C1CF5: Protect C1CF7: Fire 2 C1CF9: Mega Bomb C1CFB: Flare Robo: C1CFD: Rocket Punch C1CFF: Cure Beam C1D01: Laser Spin C1D03: Robo Tackle C1D05: Heal Beam C1D07: Uzzi Punch C1D09: Area Bomb C1D0B: Shock Frog: C1D0D: Slurp C1D0F: Slurp Cut C1D11: Water C1D13: Heal C1D15: Leap Slash C1D17: Water 2 C1D19: Cure 2 C1D1B: Frog Squash Ayla: C1D1D: Kiss C1D1F: Rollo Kick C1D21: Cat Attack C1D23: Rock Throw C1D25: Charm C1D27: Tail Spin C1D29: Dino Tail C1D2B: Triple Kick Magus: C1D2D: Lightning 2 C1D2F: Ice 2 C1D31: Fire 2 C1D33: Dark Bomb C1D35: Magic Wall C1D37: Dark Mist C1D39: Black Hole C1D3B: Dark Matter

Double Techs: C1D3D: Aura Whirl C1D3F: Ice Sword C1D41: Ice Sword 2 C1D43: Fire Whirl C1D45: Fire Sword C1D47: Fire Sword 2 C1D49: Rocket Roll C1D4B: Max Cyclone C1D4D: Super Volt C1D4F: X Strike C1D51: Sword Stream C1D53: Spire C1D55: Drill Kick C1D57: Volt Bite C1D59: Falcon Hit C1D5B: Antipode C1D5D: Antipode 2 C1D5F: Antipode 3 C1D61: Aura Beam C1D63: Ice Tackle C1D65: Cure Touch C1D67: Ice Water C1D69: Glacier C1D6B: Double Cure C1D6D: Twin Charm C1D6F: Ice Toss C1D71: Cube Toss C1D73: Fire Punch C1D75: Fire Tackle C1D77: Double Bomb C1D79: Flame Kick C1D7B: Fire Whirl C1D7D: Blaze Kick C1D7F: Blade Toss C1D81: Bubble Snap C1D83: Cure Wave C1D85: Boogie C1D87: Spin Kick C1D89: Beast Toss C1D8B: Slurp Kiss C1D8D: Bubble Hit C1D8F: Drop Kick C1D91: Red Pin C1D93: Line Bomb C1D95: Frog Flare

Triple Techs: C1D97: Delta Force C1D99: Life Line C1D9B: Arc Impulse C1D9D: Final Kick C1D9F: Fire Zone C1DA1: Delta Storm C1DA3: Gatling Kick C1DA5: Triple Raid C1DA7: Twister C1DA9: 3D Attack C1DAB: Dark Eternal C1DAD: Omega Flare C1DAF: Spin Strike C1DB1: Poyozo Dance C1DB3: Grand Dream

Each 2 byte field indicates the targets of the tech. Examples: 07 00: One enemy (Example: Confuse, Charm) 08 00: All enemies (Example: Dark Matter, Ice 2, Luminaire) 80 00: One ally (Example: Cure, Aura) 81 00: All allies (Example: Heal Beam, Aura Whirl) 03 00: One fallen ally (Example: Life) 04 00: All fallen allies 12 03: Enemy area (Example: Cyclone, Dark Bomb) 0B 01: Enemy line (Example: Slash) 0C 05: Enemy line (Example: Flame Toss) 11 02: Area around character (Example: Area Bomb, Tail Spin) 1B 0A: Area around character (Example: Black Hole) 13 02: Area around character (Example: Max Cylone, Fire Zone) 0F 0B: Horizontal line (Example: Falcon Hit) 00 00: One ally status (Example: Haste, Magic Wall) 01 00: All allies status (Example: Life Line) 13 06: (Example: Double Bomb) 0D 01: (Example: Blade Toss)

Tech Bit Locations - Memory Value[edit]

Crono

CD5EE6: 09 09 - (CD45AC)Cyclone 9C 09 - Slash CD5EF6: 64 0A - (CD45C1)*Lightning B2 0B - Spin Cut 94 0C - *Lightning 2 02 0E - *Life 96 0E - Confuse (Rainbow Light 64 0a) 90 0F - Luminaire

Marle/Nadia

CD5EF6 (End Part): Aura - D7 0F Provoke - 6F 10 CD5F06: AB 10 - *Cure (cd45F2 - cd4600 - For Graphics)*Ice - 36 11 *Haste- D3 11 *Cure 2 - 3D 12 *Ice 2 - E1 12 *Life 2 - 5E 13

Lucca

CD5F06 (End Part): 38 14 - Flame Toss 4A 15 - Hypno Wave CD5F16: 6D 15 - *Fire 81 16 - Napalm E3 17 - *Protect 64 18 - *Fire 2 FA 18 - Mega Bomb B4 1A - Flare

Robo/R-66Y

CD5F16 (End Part): (cd4655)B3 1C - RocketPunch 0E 1E - Cure Beam CD5F26: AE 1E - Laser Spin 6A 12 - Heal Beam? 12 12 - Robo Tackle A5 20 - Uzzi Punch E4 21 - Area Bomb? 46 23 - Shock

Frog/Glenn

CD5F26 (End Part): 8F 23 - Slurp 97 24 - Slurp Cut CD5F36: B9 26 - *Water 81 27 - *Heal 22 28 - Leap Slash 11 29 - *Water 2 EE 29 - *Cure 2 13 2A - Frog Squash

Ayla

CD5F36 (End Part): 93 2A - Kiss 00 2B - Rollo Kick? CD5F46: F2 2B - Cat Attack 67 2C - Rock Throw F6 2C - Charm 98 2D - Triple Kick 72 2E - Tail Spin F9 2E - Dino Tail

Magus(Janus)

CD5F46 (End Part): 2E 2F - *Lightning 2 74 2F - *Dark Mist CD5F56: E1 2F - *Fire 2 2A 30 - *Dark Bomb A3 30 - *Ice 2 D7 30 - *Magic Wall 2F 31 - *Black Hole C9 31 - *Dark Matter

Double Techs

CD5F56 (End Part): 0E 32 - Aura Whirl 0D 33 - Ice Sword (3a)

CD5F66: 9B 34 - Ice Sword 2 A9 35 - Fire Whirl cd474A - cd474f(3c) 2F 37 - Fire Sword E6 38 - Fire Sword 2 95 3A - Rocket Roll 57 3B - Max Cyclone E7 3B - Super Volt 9A 3C - X-Strike CD5F76: 19 3D - Sword Stream D3 3D - Spire 75 3F - Drill Kick 74 40 - Volt Bite 09 43 - Falcon Hit 4C 44 - Antipode 7E 45 - Antipode 2 F8 46 - Antipode 3

CD5F86: (50) E6 47 - Aura Beam 19 48 - Ice Tackle F3 48 - Cure Touch FE 49 - Ice Water FE 94 - Frog/Crono Unused Tech? C4 4B - Glacier 4A 4D - Double Cure 1C 4F - Twin Charm D8 4F - Ice Toss

CD5F96: 6E 51 - Cube toss DE 52 - Fire Punch 03 55 - Fire Tackle 49 56 - DoublevBomb E6 58 - Flame Kick AB 5A - Blaze Kick B7 5B - Unused Tech (Fire Twister?) (5f) 86 5D - Blade Toss

CD5FA6: 48 5E - Bubble Snap 42 5F - Cure Wave? 76 5F - Boogie F6 60 - Spin Kick B0 61 - Beast Toss 49 63 - Slurp Kiss BD 64 - Bubble Hit 1B 65 - Drop Kick

CD5FC6 - 86 76 - Unused Fire Sword FB 77 - Line Bomb B6 79 - Flare Frog

Triple Techs

CD5FB6: 69 66 - Delta Force 31 68 - Life Line B7 69 - Arc Impluse AF 6B - Final Kick AD 6D - Fire Zone 8C 6F - Delta Storm 26 70 - GatlingKick 4F 72 - Triple Raid

CD5FC6: 33 73 - Twister 80 75 - 3D Attack 1E 7A - Eternal Dream 14 7B - Omega Laser 85 7C - Ice Sword 3?

CD5FD6: 85 7E - Poyozo Dance (79) A7 7F - Unused One? E0 81 - Life?

Unknown

E0 81 - ??? 6F 15 - Fire Walk? 73 36 - ??? 79 D5 - Screen Fades to Dark Red as in Flare's 85 F2 - Boss Death (Game Freezes) 00 2B - Ayla Attack? From: Offsets (Chrono Trigger)