The updates are coming pretty fast for NES.app. After releasing version 1.4.1 earlier today, the team behind the NES emulator for the Apple iPhone have released version 1.4.2.

One of the big additions in this update is a new scanline fix done by incrementing before rendering. According to nervegas, this might be a hack, but it does have clear up the palette in Rad Racer, Rad Racer 2 and Asterix. Here's the complete changelog:

* [nervegas] Added Jordan's Sprite Y code to nonproduction work copy
* [nervegas] Backed up "stable" production code to NESCoreProduction.c
* [nervegas] Force four-screen mirroring when detected (Rad Racer 2)
* [nervegas] Scanline fix by incrementing before rendering
o This might be a hack, but appears to have something to do with the junk scanline before rendering; winds up fixing Rad Racer, Rad Racer 2, and Asterix's palette.
* [nervegas] Tweaked right directional pad hot sot in landscape/full