PIPBUG-based machines (such as the EA 77up2 and the Signetics Adaptable Board Computer).
Features: ReAction GUI load/save snapshots windowed and full-screen modes CPU tracing trainer drag and drop support graphics scaling automatic load/save of configuration/game keyboard/joystick/gamepad/paddle/mouse/trackball support BIOS image not needed autofire warp mode gameplay recording/playback PAL/NTSC modes sprite demultiplexing narrow mode help windows source code debugger frame skipping redefinable keys save screenshots ARexx port network play real-time monitor locale support