CREATE TABLE table_name_18 (chipset_based_on VARCHAR(255), retail_name VARCHAR(255), digital_analog_signal VARCHAR(255), available_interface VARCHAR(255))
What is the Chipset based on with a Digital/analog signal of analog, with an Available interface of agp, with Retail name with all-in-wonder 9800?
    
SQL: SELECT chipset_based_on FROM table_name_18 WHERE digital_analog_signal = "analog" AND available_interface = "agp" AND retail_name = "all-in-wonder 9800"