If there are people trying to get Linux (and NetBSD) onto things like the
Nintendo 64 and Sony Playstation, it should be possible to put it on your
DishPlayer. However, there doesn't seem to be anyone working on it right now.
Here's what I found in my investigations:
According to
WebTV's
product description page the dishplayer 7100/7200 contains a
QED RM5230 (probably the main
processor) and a IDT R3041 (Sometimes referred to as 79R3041 or just 3041)
performing additional duties. Both of these chips are MIPS-based chips.
According to
a
posting on the cobalt-users mailing-list, the Cobalt Qube, which runs
Linux, uses the QED 5230, so the cobalt port might be a good source of
relevant code.
Some places to watch for future developments
Also potentially of use are the following Dishplayer-related discussion areas