Copying PS1 games on a modded PS2

[gaston58]

I recently got my PS2 modded (NEO2), and have
been going through my old PS1 backups. All the
PS1 games work on my PS1, but they don't all
work on the PS2. Does anyone know why? Most,
if not all were burned using CDRWIN.

[emulsoin]

some dont on neo2, but i hve heard every game works with the #### chip

anyway patch the games u should be alright