Final Fantasy III: Cancel Button Dash 
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This patch is a fleshing-out of Master ZED's https://masterzed.cavesofnarshe.com/ff3.html (variant B) for FF3us.
It adds the ability to dash on the field by holding down the Cancel button
(normally the B button), and takes additional measures to keep the game's original difficulty intact.
The following features are inherited from Master ZED's FF3DashB:
The following new features are added:
[li]During timed challenges, dashing will make the countdown timer run down at twice the normal rate. This is intended to preserve the game's original difficulty and strategic options.
Title: Cancel Button Dash
Author: SilentEnigma
Version: 1.2
Release Date: 2021-09-14
Applies to: Final Fantasy III (v1.0) (U)
Contents:
CancelButtonDash_H.ips = the patch for headered ROMs
CancelButtonDash_H_Anti.ips = the anti-patch for headered ROMs
CancelButtonDash_NH.ips = the patch for unheadered ROMs
CancelButtonDash_NH_Anti.ips = the anti-patch for unheadered ROMs
readme.txt = this file
ROM Addresses:
C0/4E28 - C0/4E2C
C0/5892 - C0/5894
C0/5885 - C0/5887
Free space used: 107 bytes
C0/D674 - C0/D69E
C0/D740 - C0/D77F
________________________________________________________________________________
TABLE OF CONTENTS
0. Description
1. Relevant Offsets & Disassembly
2. Revision History
3. Credits
4. Legal
________________________________________________________________________________
0. DESCRIPTION
________________________________________________________________________________
This patch is a fleshing-out of Master ZED's FF3 Dash button hack.
It adds the ability to dash on the field by holding down the Cancel button
(normally the B button).
The following features are inherited from Master ZED's FF3DashB:
- The effect stacks with Sprint Shoes, similar to the PS1 version of FF6.
- The effect is disabled during multi-party battles.
The following new features are added:
- The author's "Sliding Dash Fix" v1.1 is included. This fixes the graphical
glitch in FF3DashB.
- The mapped Cancel button is used as the dash button rather than the B button.
This patch adapts to hacks of FF3us which allow customization of the cancel
button.
- During timed challenges, dashing will cause the countdown timer to run down
at twice the normal rate. This feature helps to keep the difficulty of the
original game intact.
________________________________________________________________________________
1. RELEVANT OFFSETS & DISASSEMBLY
________________________________________________________________________________
For info on the base patch, see Master Zed's FF3DashB:
https://masterzed.cavesofnarshe.com/ff3.html
--------------------------------------------------
"Sliding Dash Fix" v1.1
https://silentenigma.neocities.org/ff6/index.html
Original:
C0/5885: 20 8D D6 JSR $D68D ; Jump to new subroutine $D68D
Modified (Sliding Dash v1.1):
C0/5885: 4A LSR A ; Shift offset value such that...
C0/5886: 4A LSR A ; the least significant bit will change...
C0/5887: 4A LSR A ; roughly twice in the course of one step.
Original:
C0/5892: 20 8D D6 JSR $D68D ; Jump to new subroutine C0/D68D
Modified (Sliding Dash v1.1):
C0/5892: 4A LSR A ; Shift offset value such that...
C0/5893: 4A LSR A ; the least significant bit will change...
C0/5894: 4A LSR A ; roughly twice in the course of one step.
New Subroutine C0/D68D (Sliding Dash v1.1):
C0/D68D: 4A LSR ; Shift offset bits right
C0/D68E: 4A LSR ; Shift offset bits right
C0/D68F: 48 PHA ; Push offset value to stack
C0/D690: B9 7F 08 LDA $087F,y ; Load direction value
C0/D693: 3A DEA ; Check if direction is Right
C0/D694: F0 03 BEQ $D699 ; Branch if the direction is Right
C0/D696: 3A DEA ; Check if the direction is Down
C0/D697: D0 03 BNE $D69C ; Branch if the direction is Down
C0/D699: 68 PLA ; Pull position off of stack
C0/D69A: 1A INC ; Increase the offset value by 1
C0/D68B: 48 PHA ; Push offset value to stack
C0/D69C: 68 PLA ; Pull position off of stack
C0/D69D: 4A LSR ; Shift position bits right
C0/D69E: 60 RTS ; Return from subroutine
--------------------------------------------------
Additional modifications
FF3DashB:
C0/D677: AD 19 42 LDA $4219 ; Load 2nd byte for controller 1
Modified:
C0/D677: 20 40 D7 JSR $D740 ; Jump to new subroutine C0/D740
New Subroutine C0/D740:
C0/D740: A5 07 LDA $07 ; Load 2nd byte for main controller (mapped)
C0/D742: 10 3B BPL $D77F ; Branch if B btn (bit #$80) not pressed/held
C0/D744: AD 88 11 LDA $1188 ; Timer status
C0/D747: 0A ASL ; Timer visible on field (bit #$40 set)?
C0/D748: 10 33 BPL $D77D ; If not, branch
C0/D74A: C2 20 REP #$20 ; 16 bit accum./memory
C0/D74C: 48 PHA ; Preserve register B just to be safe
C0/D74D: 5A PHY
C0/D74E: DA PHX
C0/D74F: AD DF 11 LDA $11DF ; Offset with Sprint Shoes bit
C0/D752: 29 20 00 AND #$0020 ; AND for Sprint Shoes bit only
C0/D755: A8 TAY ; Transfer sprint shoes status to Y
C0/D756: 7B TDC
C0/D757: AA TAX
C0/D758: BD 89 11 LDA $1189,X ; timer counter (frames)
C0/D75B: C9 10 00 CMP #$0010 ; less than 16 frames left?
C0/D75E: 90 0E BCC $D76E ; if so, skip penalty
C0/D760: C4 00 CPY $00 ; check for sprint shoes bit in Y
C0/D762: 38 SEC
C0/D763: D0 03 BNE $D768 ; If sprint shoes present, branch
C0/D765: E9 04 00 SBC #$04 ; extra penalty for dashing w/o sprint shoes
C0/D768: E9 04 00 SBC #$04 ; penalty for dashing
C0/D76B: 9D 89 11 STA $1189,X ; timer counter (frames)
C0/D76E: 8A TXA
C0/D76F: 18 CLC
C0/D770: 69 06 00 ADC #$0006 ; each set of timer data is 6 bytes
C0/D773: C9 18 00 CMP #$0018 ; 4 adjacent sets of timer data
C0/D776: D0 DF BNE $D757 ; loop
C0/D778: FA PLX
C0/D779: 7A PLY
C0/D77A: 68 PLA
C0/D77B: E2 20 SEP #$20 ; 8 bit accum./memory
C0/D77D: A5 07 LDA $07 ; Load 2nd byte for main controller (mapped)
C0/D77F: 60 RTS
________________________________________________________________________________
2. REVISION HISTORY
________________________________________________________________________________
2020-12-28 - Version 1.0 completed.
2021-04-25 - Version 1.1 completed.
- Fixed a oversight that allowed Shadow's entrance queue at the end of the
Floating Continent sequence to fall out of step with the escape timer.
2021-09-14 - Version 1.2 completed.
- Added support for Sprint Shoes + Dash during timed challenges
- Improved accuracy of timer penalty for dashing without Sprint Shoes
________________________________________________________________________________
3. CREDITS
________________________________________________________________________________
SilentEnigma, Author
https://silentenigma.neocities.org/index.html
Special thanks to Rob "CintariZero" (@Cintari_) for reporting the bug in v1.0.
--------------------------------------------------
"FF3 Dash button hack" Credits:
Master ZED, Author
https://masterzed.cavesofnarshe.com/
Duran Divine Dragon - For the indirect inspiration.
Imzogelmo - For the free space allocation doc.
http://www.angelfire.com/al2/imzogelmo/patches.html
--------------------------------------------------
"Sliding Dash Fix" Credits:
MasterZED, for writing the FF3 Dash button hack.
https://masterzed.cavesofnarshe.com/
Imzogelmo, for his disassembly of bank C0 and for his patch allocation list.
http://www.angelfire.com/al2/imzogelmo/patches.html
Novalia Spirit, for compiling an excellent bugs list.
https://www.romhacking.net/community/996/
________________________________________________________________________________
4. LEGAL
________________________________________________________________________________
Copyright (C) 2020, 2021 David R. Thompson (SilentEnigma).
The copyright holder ("author") permits the free use of the attributed work
referenced by this document exclusively for non-commercial purposes, provided
that the following conditions are met:
1. The author and all contributors credited in this readme document shall be
given credit for their respective contributions wherever the attributed work is
reused, redistributed, or modified.
2. This readme document shall accompany any of the files comprising the
attributed work wherever they are redistributed in unmodified form.
The work(s) and file(s) distributed with this document are provided "AS-IS",
WITHOUT ANY WARRANTY. The author shall not be held responsible for any damages
related to the use of work(s) and file(s) distributed with this document.
"FF3 Dash button hack" Copyright (C) 2005 Master ZED.
FINAL FANTASY is a registered trademark of Square Enix Holdings Co., Ltd.
FINAL FANTASY VI (C) 1994, 2006, 2014 SQUARE ENIX CO., LTD.
The author of the attributed work referenced by this document makes no claim to
FINAL FANTASY VI or any intellectual property contained therein.
Database match: Final Fantasy III (USA)
Database: No-Intro: Super Nintendo Entertainment System (v. 20180813-062835)
File SHA-1: 2F3959057B2AB3664A564C467FBE4B81227CB0F3
File CRC32: 7D91FDF2
ROM SHA-1: 4F37E4274AC3B2EA1BEDB08AA149D8FC5BB676E7
ROM CRC32: A27F1C7A
It adds the ability to dash on the field by holding down the Cancel button
(normally the B button), and takes additional measures to keep the game's original difficulty intact.
The following features are inherited from Master ZED's FF3DashB:
The following new features are added:
[li]During timed challenges, dashing will make the countdown timer run down at twice the normal rate. This is intended to preserve the game's original difficulty and strategic options.
Title: Cancel Button Dash
Author: SilentEnigma
Version: 1.2
Release Date: 2021-09-14
Applies to: Final Fantasy III (v1.0) (U)
Contents:
CancelButtonDash_H.ips = the patch for headered ROMs
CancelButtonDash_H_Anti.ips = the anti-patch for headered ROMs
CancelButtonDash_NH.ips = the patch for unheadered ROMs
CancelButtonDash_NH_Anti.ips = the anti-patch for unheadered ROMs
readme.txt = this file
ROM Addresses:
C0/4E28 - C0/4E2C
C0/5892 - C0/5894
C0/5885 - C0/5887
Free space used: 107 bytes
C0/D674 - C0/D69E
C0/D740 - C0/D77F
________________________________________________________________________________
TABLE OF CONTENTS
0. Description
1. Relevant Offsets & Disassembly
2. Revision History
3. Credits
4. Legal
________________________________________________________________________________
0. DESCRIPTION
________________________________________________________________________________
This patch is a fleshing-out of Master ZED's FF3 Dash button hack.
It adds the ability to dash on the field by holding down the Cancel button
(normally the B button).
The following features are inherited from Master ZED's FF3DashB:
- The effect stacks with Sprint Shoes, similar to the PS1 version of FF6.
- The effect is disabled during multi-party battles.
The following new features are added:
- The author's "Sliding Dash Fix" v1.1 is included. This fixes the graphical
glitch in FF3DashB.
- The mapped Cancel button is used as the dash button rather than the B button.
This patch adapts to hacks of FF3us which allow customization of the cancel
button.
- During timed challenges, dashing will cause the countdown timer to run down
at twice the normal rate. This feature helps to keep the difficulty of the
original game intact.
________________________________________________________________________________
1. RELEVANT OFFSETS & DISASSEMBLY
________________________________________________________________________________
For info on the base patch, see Master Zed's FF3DashB:
https://masterzed.cavesofnarshe.com/ff3.html
--------------------------------------------------
"Sliding Dash Fix" v1.1
https://silentenigma.neocities.org/ff6/index.html
Original:
C0/5885: 20 8D D6 JSR $D68D ; Jump to new subroutine $D68D
Modified (Sliding Dash v1.1):
C0/5885: 4A LSR A ; Shift offset value such that...
C0/5886: 4A LSR A ; the least significant bit will change...
C0/5887: 4A LSR A ; roughly twice in the course of one step.
Original:
C0/5892: 20 8D D6 JSR $D68D ; Jump to new subroutine C0/D68D
Modified (Sliding Dash v1.1):
C0/5892: 4A LSR A ; Shift offset value such that...
C0/5893: 4A LSR A ; the least significant bit will change...
C0/5894: 4A LSR A ; roughly twice in the course of one step.
New Subroutine C0/D68D (Sliding Dash v1.1):
C0/D68D: 4A LSR ; Shift offset bits right
C0/D68E: 4A LSR ; Shift offset bits right
C0/D68F: 48 PHA ; Push offset value to stack
C0/D690: B9 7F 08 LDA $087F,y ; Load direction value
C0/D693: 3A DEA ; Check if direction is Right
C0/D694: F0 03 BEQ $D699 ; Branch if the direction is Right
C0/D696: 3A DEA ; Check if the direction is Down
C0/D697: D0 03 BNE $D69C ; Branch if the direction is Down
C0/D699: 68 PLA ; Pull position off of stack
C0/D69A: 1A INC ; Increase the offset value by 1
C0/D68B: 48 PHA ; Push offset value to stack
C0/D69C: 68 PLA ; Pull position off of stack
C0/D69D: 4A LSR ; Shift position bits right
C0/D69E: 60 RTS ; Return from subroutine
--------------------------------------------------
Additional modifications
FF3DashB:
C0/D677: AD 19 42 LDA $4219 ; Load 2nd byte for controller 1
Modified:
C0/D677: 20 40 D7 JSR $D740 ; Jump to new subroutine C0/D740
New Subroutine C0/D740:
C0/D740: A5 07 LDA $07 ; Load 2nd byte for main controller (mapped)
C0/D742: 10 3B BPL $D77F ; Branch if B btn (bit #$80) not pressed/held
C0/D744: AD 88 11 LDA $1188 ; Timer status
C0/D747: 0A ASL ; Timer visible on field (bit #$40 set)?
C0/D748: 10 33 BPL $D77D ; If not, branch
C0/D74A: C2 20 REP #$20 ; 16 bit accum./memory
C0/D74C: 48 PHA ; Preserve register B just to be safe
C0/D74D: 5A PHY
C0/D74E: DA PHX
C0/D74F: AD DF 11 LDA $11DF ; Offset with Sprint Shoes bit
C0/D752: 29 20 00 AND #$0020 ; AND for Sprint Shoes bit only
C0/D755: A8 TAY ; Transfer sprint shoes status to Y
C0/D756: 7B TDC
C0/D757: AA TAX
C0/D758: BD 89 11 LDA $1189,X ; timer counter (frames)
C0/D75B: C9 10 00 CMP #$0010 ; less than 16 frames left?
C0/D75E: 90 0E BCC $D76E ; if so, skip penalty
C0/D760: C4 00 CPY $00 ; check for sprint shoes bit in Y
C0/D762: 38 SEC
C0/D763: D0 03 BNE $D768 ; If sprint shoes present, branch
C0/D765: E9 04 00 SBC #$04 ; extra penalty for dashing w/o sprint shoes
C0/D768: E9 04 00 SBC #$04 ; penalty for dashing
C0/D76B: 9D 89 11 STA $1189,X ; timer counter (frames)
C0/D76E: 8A TXA
C0/D76F: 18 CLC
C0/D770: 69 06 00 ADC #$0006 ; each set of timer data is 6 bytes
C0/D773: C9 18 00 CMP #$0018 ; 4 adjacent sets of timer data
C0/D776: D0 DF BNE $D757 ; loop
C0/D778: FA PLX
C0/D779: 7A PLY
C0/D77A: 68 PLA
C0/D77B: E2 20 SEP #$20 ; 8 bit accum./memory
C0/D77D: A5 07 LDA $07 ; Load 2nd byte for main controller (mapped)
C0/D77F: 60 RTS
________________________________________________________________________________
2. REVISION HISTORY
________________________________________________________________________________
2020-12-28 - Version 1.0 completed.
2021-04-25 - Version 1.1 completed.
- Fixed a oversight that allowed Shadow's entrance queue at the end of the
Floating Continent sequence to fall out of step with the escape timer.
2021-09-14 - Version 1.2 completed.
- Added support for Sprint Shoes + Dash during timed challenges
- Improved accuracy of timer penalty for dashing without Sprint Shoes
________________________________________________________________________________
3. CREDITS
________________________________________________________________________________
SilentEnigma, Author
https://silentenigma.neocities.org/index.html
Special thanks to Rob "CintariZero" (@Cintari_) for reporting the bug in v1.0.
--------------------------------------------------
"FF3 Dash button hack" Credits:
Master ZED, Author
https://masterzed.cavesofnarshe.com/
Duran Divine Dragon - For the indirect inspiration.
Imzogelmo - For the free space allocation doc.
http://www.angelfire.com/al2/imzogelmo/patches.html
--------------------------------------------------
"Sliding Dash Fix" Credits:
MasterZED, for writing the FF3 Dash button hack.
https://masterzed.cavesofnarshe.com/
Imzogelmo, for his disassembly of bank C0 and for his patch allocation list.
http://www.angelfire.com/al2/imzogelmo/patches.html
Novalia Spirit, for compiling an excellent bugs list.
https://www.romhacking.net/community/996/
________________________________________________________________________________
4. LEGAL
________________________________________________________________________________
Copyright (C) 2020, 2021 David R. Thompson (SilentEnigma).
The copyright holder ("author") permits the free use of the attributed work
referenced by this document exclusively for non-commercial purposes, provided
that the following conditions are met:
1. The author and all contributors credited in this readme document shall be
given credit for their respective contributions wherever the attributed work is
reused, redistributed, or modified.
2. This readme document shall accompany any of the files comprising the
attributed work wherever they are redistributed in unmodified form.
The work(s) and file(s) distributed with this document are provided "AS-IS",
WITHOUT ANY WARRANTY. The author shall not be held responsible for any damages
related to the use of work(s) and file(s) distributed with this document.
"FF3 Dash button hack" Copyright (C) 2005 Master ZED.
FINAL FANTASY is a registered trademark of Square Enix Holdings Co., Ltd.
FINAL FANTASY VI (C) 1994, 2006, 2014 SQUARE ENIX CO., LTD.
The author of the attributed work referenced by this document makes no claim to
FINAL FANTASY VI or any intellectual property contained therein.
Database match: Final Fantasy III (USA)
Database: No-Intro: Super Nintendo Entertainment System (v. 20180813-062835)
File SHA-1: 2F3959057B2AB3664A564C467FBE4B81227CB0F3
File CRC32: 7D91FDF2
ROM SHA-1: 4F37E4274AC3B2EA1BEDB08AA149D8FC5BB676E7
ROM CRC32: A27F1C7A
SNES Emulator Required
Release Date
Sep 14, 2021
3 years ago
SNES Emulator Required
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