Edit Infobox PSP Homebrews: SMS Plus PSP

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SMS Plus PSP is an emulator for Sega Master System and Game Gear for PSP. Written by Akop Karapetyan (aka Uberjack) in C and uses GU (Graphical Utility toolkit) for rendering. It is a port of Charles MacDonald's SMS Plus emulator to the Sony PlayStation Portable platform. ==Features== * Screen size adjustment. * Autofire toggles. * Frameskip. * Show FPS. * Can load rom from ZIP files. * Can load rom from any directory. * Time rewind (for up to 20 seconds from recent gameplay). * Custom key mappings. * Save states. * Other miscellaneous options. ==Installation== Unzip smsppsp.zip into /PSP/GAME/ folder on the Memory Stick. Game roms may reside anywhere (the ROMS subdirectory is recommended, but not necessary). SMS+ PSP can load ROM’s from ZIP files. ==User guide== ===Time Rewinding=== Starting with v1.2.55, a Time Rewind feature is included, which allows you to rewind recent gameplay (approximately 20 seconds). To enable this feature, assign Special: Rewind feature to any PSP button. ===Button configuration=== By default, changes are not retained after button mapping is modified. Please make sure to save (with Cross button) after desired mapping is configured. ==Controls== '''Sega Master System/Game Gear:''' Analog/D-Pad - D-Pad Square - Button 2 Cross - Button 1 Circle - Spacebar L+R - Return to the emulator menu Start - Pause/Start '''Button configuration:''' Cross - Save changes Triangle - Load default key mappings ==Screenshots== https://dlhb.gamebrew.org/psphomebrew/smspluspsp2.png https://dlhb.gamebrew.org/psphomebrew/smspluspsp3.png https://dlhb.gamebrew.org/psphomebrew/smspluspsp4.png https://dlhb.gamebrew.org/psphomebrew/smspluspsp5.png ==Changelog== '''v1.3.1 2010/10/16''' * Adds support for TMS9918-based display modes, making games like F16 Fighting Falcon and Rozetta no Shouzou playable. * Saving changes to controls is now automatic (no longer need to press X to save). '''v1.2.55 2009/01/18''' * Time Rewind feature by DaveX – “rewind” recent gameplay (approximately 20 seconds). Map ‘Special: Rewind’ to any PSP button to enable this feature. '''v1.2.5 2008/12/08''' * When switching games, latest save state will be automatically highlighted. * Rapid fire support – map any button to A or B autofire (‘Controls’ tab). Change the rate of autofire in the ‘Options’ tab. * Snapshots are now saved to PSP’s PHOTO directory (/PSP/PHOTO), and can be viewed in PSP’s image viewer. * File selector snapshots – while browsing for games with the file selector, pause momentarily to display the first snapshot for the game. '''v1.2.4 2007/09/11''' * Added animations to the menu UI. * Fixed buffer overflow error affecting units without a battery. '''v1.2.3 2007/07/20''' * 20% speedup in emulation speed with new 8-bit video rendering. * Option to turn off FM emulation for an additional 48% improvement in emulation speed. This means that with FM emulation disabled, all games will play at 100% speed with VSync enabled. * Various small bug fixes. '''v1.2.2 2007/07/14''' * Fixed a bug that caused subsequently loaded games to crash. * Added an option to use a faster, less accurate sound emulation engine (improves performance by 3-4 fps). * Added an option to remove the leftmost vertical column for SMS games. '''v1.2.1 2007/07/11''' * Initial release. ==Credits== * Charles MacDonald - [http://techno-junk.org/smsplus.php SMS Plus]. * Simon Tatham - fixed.fd font on which the emulator’s font is based. * Gilles Vollant - Minizip library. * Ruka - PNG saving/loading code. * DaveX - Original time rewinding code. Thanks to Chris Swindle for pointing out the reason behind the lag in the source of original SMS Plus PSP. ==External links== * Author's website - http://psp.akop.org/smsplus.htm * SMS Plus - [https://web.archive.org/web/20160307224219/http://techno-junk.org/smsplus.php http://techno-junk.org/smsplus.php] (archived)

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