This document will explain you how to convert codes for psx games taken from codejunkies
game code creator club and other website which made code back in psx days.
first of all we will take a code to convert from one of those website:
for example we will take the debug room code for xenogears US (which is already converted in the
included database)
in the GMGSCCC website we will find it here: http://www.cmgsccc.com/codes.php?do=view&id=2189&page=39#n1
and this is our code:
Debug Menu	8004F34C 0000

now this code is made just like cwcheat of a command type (the 8 at the start wich is 16bit), an adress (04F34C)
and a value (0000).
then we will start with this base code of: 0x11000000 0x00000000 and sum the first part of the cwcheat code with the
first part of the psx AR/GS code after removing the beginning 80, so the psx code will become like this: 04F34C.
and conseguently the cwcheat code after the sum will become like this: 0x1104F34C 0x00000000 then finally we just need to put
the value in the second number in this case it's 0 so we will keep it like that and we will have 0x00000000.
so the final code is: 0x1104F34C 0x00000000
and it will be added like this in the db:
_C0 xenogears debug room
_L 0x1104F34C 0x00000000

now let's see another case multi line codes. these can be condensed because most of them can stay in a 32bit code (the
first example was a 16bit code). but anyway if you want to covert it easily this is the most easiest way.
now we will take another code for xenogears: infinite gold.
the code in the website is this: 
Infinite Gold	
8006EF58 967F
8006EF5A 0098

as you can see we have two lines and some values this time.
let's start with the first.
as we just learned we remove the beginning 80 and add to 0x11000000 so we will get 0x1106EF58. at this point we need the value
so just put it in the second value 0x0000967F [NOTE: if you want to do the hacky way :) you can just put a 0x in front of
the value like 0x967F :)]
so the result is 0x1106EF58 0x0000967F.
then we pass to the second line and just like before we remove the 80 and add it to 0x11000000  so we will have 
06EF58 + 0x11000000  = 0x1106EF58 and finally we put the value 0x00000098.
so the result is 0x1106EF58 0x00000098.
now we have both codes and we only need to put it along in db format so:
_C0 xenogears infinite gold
_L 0x1106EF58 0x0000967F
_L 0x1106EF58 0x00000098

and you are done :)

as these are the most common codes i'm just talking about them but you can find jocker codes (which you can substituite with
the cwcheat own code which supports also buttons not available in the psx), increment & decrement codes, conditional codes
8bit codes and others. they are all supported in cwcheat you just need to use the right strategy to convert them and they
won't require a big work.

finally something more technical: the psx ram starts at user ram + 0x01000000 this is why i'm summing this to the psx
adress to get the conversion done so you will be able to use this to convert your codes :)
enjoy and if you need help with other code types contact me by email (weltall@consoleworld.org) or trought the various forums
and chans were i stay.