KEEP provided an emulation framework to help the creation of such emulators. See Emulators and simulators for other systems. Modern 32-bit terminal emulators such as mTelnet and SyncTerm include native telnet support. MVS systems are traditionally accessed by 3270 terminals or by PCs running 3270 emulators. There are at least three software-based IBM Z mainframes emulators. This page is intended to list all current and historical HDL simulators, accelerators, emulators, etc. Development for newer systems typically involves actual hardware given the lack of accurate emulators. "Save state" feature in video game console emulators is an example of such snapshots. Some programmers have continued to code for the platform by using emulators on PCs. This system is usually preserved even in graphical terminal emulators. Other 49G/49g+/50g emulators for Android (without ARM support). Brandon Widder of Digital Trends included PCSX2 in his Best Emulators article. Most terminal emulators for X started as variations on xterm. AppleWin and MESS are among the best emulators compatible with most Apple II images. This can be used as a cheap replacement for hardware in-circuit emulators (ICE).