 GameBoy Online (2011/06/26)
Posted by Wraggster @ 12:59 PM CET |  Comments: 0 |  Gameboy
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via http://www.emucr.com/2011/06/news-gameboy-online-20110626.html
GameBoy Online is a Game Boy and GameBoy Color emulator written in Javascript. It strives to be efficient and try to have a perfect compatibility. Currently the execution speed is not optimal even on browsers. For example on Chrome, which is nevertheless deemed to run Javascript faster on a PC running Windows 7 64-bit version with a double heart 2 CPUs at 2.2 GHz, games run at normal speed but almost skipping some frames.
The sound production is still experimental and rather poor quality. The video portion is by HTML5 or by creating images with BMP string URI. State backups are implemented using the object window.localStorage and are serialized / deserialized JSON. Ditto for backup SRAM.
Recent Changes:
- Emulating an undocumented behavior: HDMA becomes GDMA when LCD is disabled. This fixes Worms Armageddon. Manual disassembly + Firebug = :3
- Optimized the DMA code by inlining whole tile block loads. Kirby Tilt N Tumble can now boot, I will get the special gyro implementation landed soon, since it is running as an MBC type 5 cartridge for now.
- Updated Updating the midscanline working pixel determinism.
- Updated LYthe LY register reset write case handling.
http://www.grantgalitz.org/gameboy/
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