Red Viper v1.3.0 is released. A Virtual Boy emulator for the Nintendo 3DS continuing mrdanielps's work on r3Ddragon, which is itself based on Reality Boy / Red Dragon. It uses a dynamic recompiler with busywait detection and a hardware-accelerated renderer to achieve high performance on the 3DS's limited hardware.

Red Viper Changelog:
New rendering mode that downloads GPU-rendered image to CPU for post-processing (#88)
Enabled in Test Chamber, meaning black walls are no longer transparent on old 3DS and performance is improved on new 3DS
Test Chamber should now be fully compatible with good performance
Fixed half of the court being black in Virtual Bowling
Improved floor transitions in Jack Bros.
Fixed some transitions flashing the wrong thing for 1 frame when antiflicker is enabled in Jack Bros.
General minor performance improvements

Download: Red Viper v1.3.0
Source:Here