Table schema:
CREATE TABLE table_name_10 (cpu_chip VARCHAR, model VARCHAR, modem VARCHAR, type VARCHAR)

Question: What is the CPU chip in the Dishplayer 7100, which is a dish tuner with a v.90 modem?
SQL: SELECT cpu_chip FROM table_name_10 WHERE modem = "v.90" AND type = "dish tuner" AND model = "dishplayer 7100"