all boards: Brooktree Bt848/848A/849/878/879: video capture chip Miro PCTV: Philips or Temic Tuner Hauppauge Win/TV pci (version 405): Microchip 24LC02B or Philips 8582E2Y: 256 Byte EEPROM with configuration information I2C 0xa0-0xa1, (24LC02B also responds to 0xa2-0xaf) Philips SAA5246AGP/E: Videotext decoder chip, I2C 0x22-0x23 TDA9800: sound decoder Winbond W24257AS-35: 32Kx8 CMOS static RAM (Videotext buffer mem) 14052B: analog switch for selection of sound source PAL: TDA5737: VHF, hyperband and UHF mixer/oscillator for TV and VCR 3-band tuners TSA5522: 1.4 GHz I2C-bus controlled synthesizer, I2C 0xc2-0xc3 NTSC: TDA5731: VHF, hyperband and UHF mixer/oscillator for TV and VCR 3-band tuners TSA5518: no datasheet available on Philips site STB TV pci: ??? if you want better support for STB cards send me info! Look at the board! What chips are on it?