Справочник Пользователя для Aopen mx4b
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ATA/100 is a new IDE specification under developing. ATA/100 uses both rising edge and falling edge as
but clock cycle
time is reduced to 40ns. The data transfer rate is (1/40ns) x 2 bytes x 2 = 100MB/s. To use ATA/100, you need special 80-wire IDE
cable, the same as ATA/66.
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or
. BIOS controls Input/output devices and other
hardware devices of motherboard. In general, to provide hardware independent portability, operation system and drivers is required
to access BIOS without directly access hardware devices.
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The traditional PIO (Programmable I/O) IDE requires the CPU to involve in all the activities of the IDE access including waiting for
the mechanical events. To reduce the workload of the CPU, the bus master IDE device transfers data from/to memory without
interrupting CPU, and releases CPU to operate concurrently while data is transferring between memory and IDE device. You need
the bus master IDE driver and the bus master IDE HDD to support bus master IDE mode.
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The CNR specification provides the PC industry the opportunity to deliver a flexible and cost reduced method of implementing LAN,
home networking, DSL, USB, wireless, audio and modem subsystems widely used in today's "connected PCs". The CNR
specification is an open industry specification and is supported by OEMs, IHV card manufacturers, silicon supplier and Microsoft.