CREATE TABLE table_name_10 (cpu_chip VARCHAR(255), model VARCHAR(255), modem VARCHAR(255), type VARCHAR(255))
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"