Справочник Пользователя для Toshiba 6000 Series

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If Something Goes Wrong
Resolving a hardware conflict

each device, test it to make sure it and all previously connected 
devices work.

The device most recently connected to the system is the one most 
likely to be causing a hardware conflict.

Computer components need resources to accomplish a task. A 
device, such as a disk drive or a modem, needs a channel to the 
computer’s Central Processing Unit (CPU). It also needs a direct 
channel to the computer’s memory to store information as it 
works. These channels of communication are commonly referred 
to as system resources.

The channel to the CPU is called an Interrupt Request (IRQ) 
because it interrupts what the processor is doing and requests 
some of the processor’s time. If two or more devices use the same 
IRQ, the processor does not know which device is asking for 
attention. This causes a hardware conflict.

Similarly, the data required by the device is stored in a specific 
place or address in memory called the Direct Memory Access 
(DMA). The DMA provides a dedicated channel for adapter cards 
to bypass the microprocessor and access memory directly. If two 
or more devices use the same DMA, the data required by one 
device overwrites the data required by the other, causing a 
hardware conflict.

There are three things you can do to resolve hardware conflicts:

❖

Disable the device.