Emulator settings for runs: 
(1) Config > Speed/Skip enable "Skip 0/never", 
(2) Config > Profiles set to "Tool-assisted Speedruns", 
(3) GBA > Settings... set "Skip BIOS" to "False", 
(4) Config > Customize > General enable "Run in background" (should be default), 
(5) Config > Customize > General > "Pause when menu activated" is unchecked,
(6) GBA > Settings, set "RTC" to False (BizHawk v2.6.3+) to simulate a dead battery,
(7) Using a GBA BIOS is recommended, however, runs done without it are allowed, as we haven't noticed any difference in terms of FPS, Lag, and IGT.

BizHawk

Allows you to play without a solar sensor, thus making emulator a thing.

Solar Sensor Patches

Almost everything is translated. Password and Name Entry menus are broken a bit : you need to press Start to reach the Confirm option.

In one of the menus, STR and SPR are inverted, however it's only a visual error.

Translation patch (english)

xDrHellx

Boktai 3: Sabata's Counterattack

Nintendo DS

by6956

JPN / NTSC

Sunlight Patch

Real Sunlight

UV (Lamps, Leds, Blacklight)

Emulator w/out Sunlight Patch

1 : Eradication

2 : Search

3 : Escape

Method Used

Mission

Hello,

**Lately we've noticed some issues related to built-in solar sensor features that some emulators have (for example mGBA).**

*For those who don't know,  these features allows you to bind keys to adjust the solar sensor values, this means that patching the games with the solar sensor patc

Regarding built-in solar sensor features on some emulators

Boktai

Console and Emulator differences

Name	Manager
Solar Sensor Patches by Prof9	xDrHellx 9 years ago
Translation patch (english) by "Spikeman"	xDrHellx 16 years ago