SMS Plus PSP

SMS Plus PSP
General
Author(s)	Akop Karapetyan
Type	Console
Version	1.3.1 (16 Nov 2010)
Licence	Mixed
Links
Download
Website
Source

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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

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 - 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 - http://techno-junk.org/smsplus.php (archived)