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Operating System Support

■ fuli support for IEEE 1394a/b for FreeBSD, Llnux, Apple Mac OS 8.6 -Mac OS 9. Mac OS X. NetBSD, OpenBSD and Haiku

•    Microsoft Windows XP (Service Pack 2) supports FireWire S100 (100 Mbit/second) speed device

•    download is auailable from Microsoft which enables deuices rated at S400 or S800 speeds

•    Microsoft Windows Vista currently supports only 1394a. with 1394b support coming later In a service pack

•    some FireWire hardware manufacturers also prouide custom device driuers which replace the Microsoft OHCI hosi adapter driuer stack, enabling S800-capable devices to run at fuli 800 Mbit/s transfer rates.

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FireWire - Signals

■ two twisted pairs TPA and TPB used for signaling. bidirectional and tri-state > TPA+I- is used to transmit strobe signal and receiue data ¹TPB+/- is used to receive strobe signal and transmit dala

> drivers on each port (TPA and TPB) are designed to work with an exłemal 112-Otermination-resistor network (this isto matchthe 110-0 cabte impedance - one network must be provided at each end of the twisted-pair

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