If you want to get your gp2x to sleep press L+R+middle volume. CPU will go down to 30Mhz, backlight will be disabled and the lcd chip will be turned off. Battery led will blink every second. To go back to normal mode, use the same combination again. The program stays active while the gp2x is running.

http://www.gp2x.de/cgi-bin/cfiles.cgi?0,0,0,0,8,2273

Franxis has updated his MAME port for the GP2x.

Changes:

– Compatibility improvements in the Cyclone M68k core. E.g. SpinMaster and Aero Fighters series are working again. Thx to Notaz.
– Optimizations in the Cyclone M68k core. 23% of the code has been removed. Also some Picodrive specific hacks have been removed. Thx to Notaz.
– Added the correct VSync code from Picodrive. Do not use auto-frameskip with VSync!. Thx to Notaz.
– Added sound quality selector (11-44 KHz). Also some tweaks have been done in the sound library and it is more accurate.
– Optimizations in the FM sound hardware libraries.
– Minor changes in the DrZ80 and the CPS-1 interrupts handling.

http://www.talfi.net/gp32_franxis/

Hooka has conducted an interview with Notaz, known for emulation related GP2x topics.

http://hooka.gp2x.de/2796/

ZodTTD has continued his work on PSX4GP2x and presents us Beta 5.

From the readme:

psx4all’s psx4gp2x
A PSX EMULATOR FOR THE GP2X!
Version: PUBLIC BETA 5 – BUILD 071307

For more information visit http://www.zodttd.com
For discussion of psx4all visit the forums at http://www.gp32x.com

Installation:
– You should have an unzipped psx4gp2x directory where this readme.txt is located.
1. Copy the REQUIRED (not included) psx BIOS file scph1001.bin to the same directory that psx4gp2x’s gpe file is located (./psxgp2x)
2. Copy your ISO/BIN files and/or PocketISO 2.0+ compressed Z/TABLE files over to a directory such as the roms directory in ./psxgp2x
3. Copy the ./psx4gp2x directory to your GP2X storage media
4. Run psx4gp2x_[build_date].gpe

Controls:
GP2X – PSX
STICK – THUMB PAD
A/B/X/Y – CORRESPONDING CIRCLE/SQUARE/TRIANGLE/X BUTTONS
L TRIGGER – L1
R TRIGGER – R1
L TRIGGER+PUSH – L2
R TRIGGER+PUSH – R2
START – START
SELECT – SELECT
GP2X SPECIFIC – PSX4GP2X
VOLUME MIDDLE – IN-GAME MENU
L TRIGGER+VOL-DOWN – PSX CYCLE DOWN
L TRIGGER+VOL-UP – PSX CYCLE UP
R TRIGGER+VOL-DOWN – PSX CLOCK DOWN
R TRIGGER+VOL-UP – PSX CLOCK UP

Tips for getting maximum performance:
– Using interlace 1+ setting gives more performance at the cost of blockier looking graphics from upscaling
– Turning sound off may give a slight performance increase
– Use your best overclock and use ram timings on if possible
– Be sure to find the best (working) PSX CLOCK setting. Usually a lower PSX CLOCK setting that keeps VSync less than 130 while keeping the highest framerate (FPS) is recommended.
– If you feel like tweaking timings more, change PSX CYCLE from 2 to a different value first. BUT IN ORDER FOR THIS OPTION TO BE RECOGINZED, YOU MUST RELOAD THE GAME FROM THE INGAME LOADGAME OPTION EACH TIME YOU WANT IT SET TO THE NEW VALUE!
– Once the PSX CYCLE has been successfully changed, edit the PSX CLOCK timings. Usually PSX CYCLE 1 to 4, maybe 5, is best.

Tips for compatibility with games that freeze or won’t load:
– Change the PSX CYCLE to 1 and change PSX CLOCK to a number between 80 and 104. Do this as soon as the game inits/loads up and then RELOAD THE GAME FROM THE INGAME MENU with these new settings in place.

http://www.zodttd.com/

Hex Pistols by Fit. This demo is also available for other platforms, for an overview visist: http://ftp.kameli.net/pub/fit/hex_pistols/

Jenny Thinks by Fit and Bandwagon. This demo is also available for other platforms, for an overview visist: http://ftp.kameli.net/pub/fit/jenny/

Debris by Hedelmae, entered in the GP2X Demo Competition 2006 and ranked #2.

Creep Tea is a demo for GP2x by optimus. It has been released at the GP2X Demo Competition 2006 and ranked #1.

Re-re-recycle is a demo for the GP2x by optimus.

Ruck-Man is a remake of the classic Pac-Man by Ruckage.

Changes:

* Music has been improved and is better compressed making the game take up less space. (Thanks Pferguso)
* Game can now also be controlled by using the A,B,X,Y buttons.
* When the ghosts re-spawn there is now a delay before they leave the ghost house.

http://www.gp2x.de/cgi-bin/cfiles.cgi?0,0,0,0,27,2236