There are several DVD/TV combo units all which appear
to be based around the same
or similar DVD circuit as the DVD-101 player

BUSH DVD141TV*
known firmware for this player ST9.48AMIC0825

Possibly the DVD140TV and DVD142TV as well.

Goodmans GTV34RDVD (Thanks to hirsty for this one)*

Goodmans GTV14DVD (Unconfirmed)*

Possibly Medion MD3702 currently available from dabs amongst others

* The players marked above appear to use the same region hack as the main 528 player

If you know of anymore or can shed any light on these players please email me here