PSP MAME4ALL: Difference between revisions

Revision as of 13:07, 5 November 2022

PSP Mame4All by TTYman is a port of MAME, a PC emulator of arcade games.

It is based on the MAME GP2X emulator v4.9 developed by Franxis, an adaptation of MAME4All on Dreamcast (which itself is a port of MAME 0.34).

Based on latest MAME GP2X release v4.9.
480x272 full PSP Hires Support, now games with >320 orizz. and >240 vert. pixels are fully playable (Loderun, Galaga etc.).
Overclock support, from 133 to 333 MHz.
Fixed, Fixed Divided by 2, Software Scaled and Software Full Screen Stretched resolutions (all maximum 480x272).
Frameskip as GP2X version (fixed 0-5, auto 1-5).
Vsync on/off.
Save configuration support, default and per game.
22KHz with 16 voices predefined sounds, 33KHz and 44KHz frequencies with 4, 8 and 16 voices combinations added.
Preliminary analog support.
Autocentering fix for all resolutions.
Optimized compiled code as derived from GP2X version, but for PSP cpu (fastest graphics core).
Stripped & Packed executable, only 1.5MB.
Original graphics theme from Gold edition (user mode version only).
Music in menu (filename music.psp in data folder), in these supported formats: .MOD, .S3M, .IT, .XM and .OGG.
Added, as bonus, 1st classified OldSkool at Assembly 2007 Music Competition (Commodore 64 based), in .OGG format.
Graphic theme 480x272 BMP skins support, both pspmenu480.bmp and pspsplash480.bmp in folder skins (user mode version only).
Dipswitches settings.

There are four different builds in the archive:

psp_mame4all_v4.9r2 - 1.50 Kernel mode.
psp_mame4all_v4.9r2-noneogeo-nocps1 - 1.50 Kernel mode without neogeo and cps1 support.
psp_mame4all_v4.9r2-usermode - 2.00 User mode.
psp_mame4all_v4.9r2-usermode-noneogeo-nocps1 - 2.00 User mode without neogeo and cps1 support.

Use psp_mame4all_v4.9r2 as installation base, then replace EBOOT.PBP with your needed/preferred build (ms0:/PSP/GAME/).

The romset is a mixed of MAME 0.34 - 0.36, and you can recreate zipped roms with the included .DAT files. Read more.

Add created zipped roms files in ROMs subfolder and samples in samples subfolder.

Samples must be in .sam old Mame pre-v0.35 format, which can be found here.

Select - Insert credits

Start - Play

Home - (After pause) Exit game and return to menu

L+R - Activate/deactivate screen fixed/fixed div2/scale/stretch

L+R pressed during one second - Pause

L+Home - Reset emulation

General audio with some gliches due to original unoptimized threaded sound core.
Preliminary Analog stick support doesn't recognize very fast movements.
No rotate support.

4.9r2

Usermode builds now works.
Dipswitches settings added.
Some Z80 core speedups.
Vector based games like Asteroids now run at native resolution of 480x272 pixels.
Preliminary memory management to clean-up things in certain romset (due to original MAME bugs) before starting a new emulation.
In case of memory fragmentation errors emulator now quits without lockups.
Better sound support in certain games, like Teenage Mutant Hero Turtles etc.
Graphics themes disabled in 1.50 kernel mode to gain more memory available, used a simple blue gradient instead.
Graphics mode saved with settings.

4.9r1

Crash when sampled used.
Unified builds, thanks to new Z80 core, Mame 0.53 based, compatible with system16, neogeo and classic roms.
Implemented PSP-2000 (slim) specific support, so double memory available to load roms, thanks to keiich-san code.

4.7r3 (same as 4.8r1 unreleased)

Sounds now are near arcade perfect, with minor gliches in some sound chips emulations.
Gold (CPS1, System16 and Neogeo) specific emulations are now stand-alone, as require different z80 cpu implementation.
Improved performance with sounds, oldies with 0 frame skip and vsync on, others with auto-1 and auto-2.

4.7r2

133 MHz in menu and while paused, for battery saving.
VSync really works now.
Corrected build configuration and Makefile, so sounds in various games are now back.
Correct fixed, div2, sw scaled and sw stretched resolutions, with autocentering.

@@ Line 36: / Line 36: @@
 ==Installation==
-There are four different builds in archive:
+There are four different builds in the archive:
 *psp_mame4all_v4.9r2 - 1.50 Kernel mode.
 *psp_mame4all_v4.9r2-noneogeo-nocps1 - 1.50 Kernel mode without neogeo and cps1 support.