Keyboard and disk drive ports can be added to all versions, but the first version did not have flash memory so you can't change/replace the software. There are also differences as to what connections are exposed on the board which determines which mods you can do. Steve ----- Original Message ---- > From: Golan Klinger <gklinger@xxxxxxxxx> > To: torontocbm@xxxxxxxxxxxxx > Sent: Wednesday, June 3, 2009 1:36:12 PM > Subject: [torontocbm] Re: As a follow up to my 64 DTV Pal messages... > > All versions of the C64DTV and the Radio Shack Hummer (which is based > on the same ASIC) can be modded. > > -- > Golan Klinger > Dark is the suede that mows like a harvest.