GBRE

GB Runtime Environment for iOS

https://ericgramgb.github.io/GBRE/GBRE.html

Browsers

work well

• iOS Safari
• Google Chrome

not

• Firefox (due to AudioBuffer handling)
• IE (no audio support)

Cartridge Type

supported

• DMG (MBC1, MBC2, MBC3, MBC5, MBC7)

also

• CGB (CPU double speed mode, RAM bank, VRAM bank, color palette, new DMA, accelerometer)

Keyboard

• W - Up / A - Left / S - Down / D - Right
• L - A / K - B / I - Start / O - Select

How to open ".gb" or ".gbc" file

1. Open "GBRE.html".
2. Tap "Choose File".
3. Browse and select a file.
4. Touch the LCD area of the screen to run.

(If you upload a file to the web server that is configured to send "Access-Control-Allow-Origin" header, you can specify the URL directly.)

Notes of some features

• "Save" - Write save data to localStorage and base64 encoded text to textarea. (Save command should be done after saving in game.)
• "Load" - Read save data from localStorage. (Load command should be done during startup.)
• "Load Text" - Read save data from base64 encoded text in textarea.
• "30 fps" - Frame skip.
• "60 fps" - Normal.
• "120 fps" - More accurate audio timing.
• "999 fps" - No wait.
• "Controller" - Adjust controller size.
• "2P" - Boot a second GB to communicate or exchange data.

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