当方の設定を一応書いておきます。
[Options]の[Emulation]の設定です
[Emulation Speed,LCD Refresh]
Realtime,Auto
[Reset/Startup Entrypoint]
Start Cartridge directly
[Video Output]
24bit True
[3D Renderer]
nocash
[GBA Mode]
VGA〔poppy bright〕
[GBA Cartridge Backup Media]
None
[NDS-Cartridge Backup Media]
FLASH 512KBytes
[Solar Sensor Level]
Darkness
[Sound Output Mode]
Digital Mono〔fast〕
[Sound Desired Sample Rate]
Low 〔10KHz〕〔fast〕
[Multiboot Port]
LPT2/278H
[Multiboot Normal/BurstDelays]
Fast/Fast〔best〕
[Number of Emulated Gameboys]
1
[Link Gamepaks]
Gamepaks in all GBAs
[Link Cabie Type]
Automatic
参考にどうぞ