Hiya
Thought I'll knock together this highly rudimentary guide to help anyone having problems
Firstly a brief explanation of how it works
With the release of Dark Alexs Custom Firmware 3.02 OE-A psx games from the PS3STORE were cracked allowing you download it and run it
On Christmas morning 3.02 OE-B was released which enabled you to package your own PSX ISO within the PS3STORE game 'Hot Shots Golf 2' so when you ran the game the ISO you packaged in the EBOOT will run.
Compatibility is pretty high as can be see in this compatibility list over at Maxconsole forums
Compatibility List
However as the PS3STORE game we use to contain our PSX ISO is NTSC region the Y postion of PAL ISO is off center meaning when running PAL games the display is cropped
You can improve the display by running a PAL to NTSC patch on your PSX ISO before packaging it into the BOOT, game specific patch's can be found for some PSX games over at megagames
Megagames PSX Patches
A generic Pal to NTSC converter can be found at Maxconsole forums although it does cause some problems with certain games one being Crash Bandicoot
PAL TO NTSC
HOW TO CREATE PSX GAMES FOR PSP
Requirements
1.PSP with Dark Alex Custom Firmware 3.02 OE-B
2. PSX ISO (preferably NTSC region for highest compatibilty)
3. KEYS.BIN and BASE.PBP (from 'Hot Shots Golf 2' PSX PS3STORE game rename EBOOT.PBP to BASE.PBP)
If you use 'Clean Popstation Generator' by TheShadowRunner at Maxconsole you will not need 'Hot Shots 2' as the required files are already included,the downside is the converter is a little less Noob friendly ie No GUILink
4. PSX2PSP V6 by KingSquitter (easiest to use with the most fuctions) LINK
STEP 1- Setting up Converter
Extract PSX2PSP following the ReadMe place 'POPSTATION.EXE' which you should have from the 3.02OE-B package LINKin the 'Files' directory
Place 'KEYS.BIN' and 'BASE.PBP also in the 'Files' directory (PM me if you have troubles obtaining files)
STEP 2- Converting ISO
Once you have the files in the correct places run PSX2PSP
In the 'ISO/PBP File' browse to location of your PSX Backup which can be in ISO,IMG,BIN format
In the 'Output PBP' browse to where you want the Converted game saved making sure there is enough free disk space
In the 'Game Title Field' specify the desired name for your PSX game, PSX2PSP usually takes the name from the ISO Filename
In the 'Save Title Field' you can specify the name that will appear on the PSX SaveData when you browse on your PSP using the Save Data menu
OK now here is the Important part especially for Multi Disc Games
The 'Game ID' field will be automatically filled in by PSX2PSP taking the info from the specified PSX game this allows the use of 2 x 15 block PSX Memory Cards within the PSP PSX EMU for each game
Previously as the Game ID was the same as 'Hot Shots Golf 2' only 2 X 15 Block was available no matter what ISO you packaged this caused some problems with overwritten savedata and lost savedata
Taking the 'Game ID' from the PSX ISO lets you have seperate SaveData files for each game However with Multi Disc game the Game ID is diffrent on each disc meaning when PSX2PSP by default will generate a seperate Save Data for each disc
To prevent this make sure you use the same Game ID from Disc 1 for all the Discs this way the same SaveData file will be used for Multi Disc game
If you wish to customise your PSX EBOOT ie have game specific Artwork attached go to 'CUSTOMISING PSX EBOOT' otherwise read on
You can now press 'CONVERT' to generate your PSX EBOOT
To play simply place 'EBOOT.PBP' along with 'KEYS.BIN' in a directory of your choice within 1.5 homebrew 'GAME' directory on PSP ie G:/PSP/GAME/FF8
Note: When using the OE-B firmware as it is a hybrid firmware the 1.5 homebrew folder is sometimes specified as 'GAME150' within PSP directory you change this in recovery menu by press and holding 'R' during boot