MasterGear v4.4 for Windows is released. MasterGear is a program that emulates 8bit SEGA videogames on your computer. It runs games made for SEGA MasterSystem (Mark3 in Japan) and GameGear, as well as their predecessors: SG1000, SC3000, SF7000, and Mark2. MasterGear will also help hobbyists who still write software for these systems to debug their works without using rare and costly development hardware.

MasterGear v4.4 for Windows Changelog:
Made replay save states approximately every 170ms.
Added ability to browse through paused replay.
During replay, the [UP] button to pause.
Press [LEFT] and [RIGHT] to browse through paused replay.
Press [UP] to resume replay, any other key to continue.
Made WaitJoystick() exit when window closed.

Download: MasterGear v4.4 for Windows
Source: Here