Gargoyle's Quest II: The Demon Darkness: Gargoyle's Quest II - Photosensitivity Patch

Mod includes:
- Removal of background color strobe effect on title screen (JP only, already gone in US)
- Removal of white/red strobe effect upon enemy encounters and certain cutscene events
- Removal of white flashing upon hitting an end boss

Gargoyle's Quest II - The Demon Darkness (U) [!].nes
IPS MD5: 2173EF0CA55FD06B88F82C22D6E3C172
ROM MD5 before: 8EA7A1B1552D55B42163C27A7EFC0800
ROM MD5 after: 9EBEB82EBF2EBE33B11E91495C344B7E

Red Arremar II (J) [!].nes.nes
IPS MD5: 9815E0FE0B52E25595FF4CF347A1D64A
ROM MD5 before: 2E68BAAA510719D7C59FFFAA0D874F19
ROM MD5 after: C52479BAFCAD89F3D9FA9E75CC161E74

Mod includes:
- Removal of background color strobe effect on title screen (JP only, already gone in US)
- Removal of white/red strobe effect upon enemy encounters and certain cutscene events
- Removal of white flashing upon hitting an end boss

US version

EnemyEncounter:

03:8475: 8A TXA
// OLD
03:8476: 4A LSR
// END OLD
// NEW
03:8476: 38 SEC
// END NEW
03:8477: B0 0A BCS $8483
// Strobe screen palette
03:8479: A5 09 LDA $09 = #$30
03:847B: 99 00 06 STA $0600,Y @ $0600 = #$0F
03:847E: 88 DEY
03:847F: 10 FA BPL $847B
03:8481: 30 09 BMI $848C
// Retain game palette
03:8483: B9 20 06 LDA $0620,Y @ $0620 = #$0F
03:8486: 99 00 06 STA $0600,Y @ $0600 = #$0F
03:8489: 88 DEY
03:848A: 10 F7 BPL $8483

GozaHit:

05:8155: BD 44 05 LDA $0544,X @ $0549 = #$0C
// OLD
05:8158: 29 03 AND #$03
// END OLD
// NEW
05:8158: A9 FF LDA #$FF
// END NEW
05:815A: D0 0C BNE $8168
// Strobe background color
05:815C: AD 10 06 LDA $0610 = #$0F
05:815F: 49 3F EOR #$3F
05:8161: 8D 10 06 STA $0610 = #$0F

JP version

TitleScreen:

// Strobe background color
04:B0A3: AD 10 06 LDA $0610 = #$0F
04:B0A6: 49 3F EOR #$3F
// OLD
04:B0A8: 8D 10 06 STA $0610 = #$0F
// END OLD
// NEW
04:B0A8: EA NOP
04:B0A9: EA NOP
04:B0AA: EA NOP
// END NEW

EnemyEncounter:

// OLD
03:87BA: 4A LSR
// END OLD
// NEW
03:87BA: 38 SEC
// END NEW

GozaHit:

// OLD
05:8154: 29 03 AND #$03
// END OLD
// NEW
05:8154: A9 FF LDA #$FF
// END NEW


Database match: Gargoyle's Quest II (USA)
Database: No-Intro: Nintendo Entertainment System (v. 20210216-231042)
File SHA-1: 2380B3439B2F1EA98D63DB99758671FA8FAF601C
File CRC32: DA7A9F89
ROM SHA-1: EDC4F9CC3BCED542E503A961E22D7B085ED17BCD
ROM CRC32: F0E9971B

Database match: Red Arremer II (Japan)
Database: No-Intro: Nintendo Entertainment System (v. 20210216-231042)
File SHA-1: E2566C0748C9B14B233BBDD596C32AAED4ECD871
File CRC32: 7998C426
ROM SHA-1: 56FF3A2641FD2DECD5B334AEF586739B1532DEF3
ROM CRC32: 530BCCB4