SMS Plus PSP is a port of the SMS Plus emulator to the Sony PlayStation Portable platform. It’s written in C and uses GU (Graphical Utility toolkit) for rendering.
Table of Contents
New Features
Version 1.3.1 (October 16 2010)
- 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)
Installation
Unzip smsppsp.zip into /PSP/GAME/ folder on the memory stick.
Game ROM’s may reside anywhere (the ROMS subdirectory is recommended, but not necessary). SMS+ PSP can load ROM’s from ZIP files.
Time Rewinding
Starting with version 1.2.55, SMS Plus PSP includes a “time rewind” feature, which allows you to rewind recent gameplay (approximately 20 seconds). Map ‘Special: Rewind’ to any PSP button to enable this feature.
Controls
The emulator currently comes with the following default key mappings:
During emulation:
| Analog stick | Directional pad up/down/left/right |
| Directional pad | Directional pad up/down/left/right |
| [ ] (square) | Button 2 |
| X (cross) | Button 1 |
| O (circle) | Spacebar |
| [L] + [R] | Return to the emulator menu |
| START | Pause/Start |
By default, button configuration changes are not retained after button mapping is modified. To save changes, press X (cross) after desired mapping is configured. To load the default mapping press ^ (triangle).
Compiling
Emulator’s source code is only available via a Subversion (SVN) repository. To check out a particular version, run
svn co http://svn.akop.org/psp/tags/smsplus/version
where version is the release version (for example, 1.2.1). Note that for this to work, you need to have Subversion installed.
To compile the emulator, you will need zlib (svn://) and libpng (svn://).
Version History
1.2.55 (January 18 2009)
- Time Rewind feature by DaveX – “rewind” recent gameplay (approximately 20 seconds). Map ‘Special: Rewind’ to any PSP button to enable this feature
1.2.5 (December 08 2008)
- 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
1.2.4 (September 11 2007)
- Added animations to the menu UI
- Fixed buffer overflow error affecting units without a battery
1.2.3 (July 20 2007)
- 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
1.2.2 (July 14 2007)
- 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
1.2.1 (July 11 2007)
- Initial release
1.2.45 (October 05 2002)
- Corrected aspect ratio (needs checking)
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
| Chris Swindle | for pointing out the reason behind the lag in the source of original SMS Plus PSP |