Advantech A120-X5X, Руководство пользователя

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116 PPC-A84/A120 User's Manual
IDE HDD Block Mode
This allows your hard disk controller to use the fast block mode to
transfer data to and from your hard disk drive (HDD).
The options are: Enabled (Default), Disabled.
IDE Primary/Secondary Master/Slave PIO
IDE hard disk drive controllers can support up to separate hard drives.
These drives have a master/slave relationship which is determined by
the cabling configuration used to attach them to the controller. Your
system supports two IDE controllers - a primary and a secondary - so
you have the ability to install up to four separate hard disks.
PIO means Programmed Input/Output. Rather than having the BIOS
issue a series of commands to effect a transfer to or from the disk
drive, PIO allows the BIOS to tell the controller what it wants and then
let the controller and the CPU perform the task by themselves.
Your system supports five modes, numbered from 0 through 4, which
differ primarily in timing. When "Auto" is selected, the BIOS will
choose the best available mode.
The options are: Auto, (Default), Disabled.
Primary/Secondary Master/Slave Ultra DMA
DMA means Direct Memory Access. Ultra DMA is faster than DMA.
DMA is a method of transferring data to or from memory at a fast rate,
without involving the CPU.
When you select "Auto", the BIOS will choose the best available
mode.
The options are: Auto (Default), Disabled.
KBC input clock
Set the keyboard cpntroller input clock.
The options are: 6MHz, 8MHz, 12MHz, 16MHz
Onboard FDD Controller
When enabled, the floppy disk drive (FDD) controller is activated.