Advantech PPC-153, Руководство пользователя

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Chapter 9 Award BIOS Setup 101
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.
Onboard FDD Controller
When enabled, the floppy disk drive (FDD) controller is activated.
The options are: Enabled (Default), Disabled.
Onboard Serial Ports 1 & 2
If the serial ports use the onboard I/O controller, you can modify your
serial port parameters.
The options for Port 1 are: 3F8/IRQ4 (Default), 2E8/IRQ3, Disabled,
2F8/IRQ3, 3E8/IRQ4.
The options for Port 2 are: 2F8/IRQ3 (Default), 3E8/IRQ4, 2E8/IRQ3,
Disabled, 3F8/IRQ4.
Onboard Serial Ports 3 & 4
If the serial ports use the onboard I/O controller, you can modify your
serial port parameters.
The options for Port 3 are: 3E8/IRQ10 (Default), 2E8/IRQ5, Disabled.
The options for Port 4 are: 2E8/IRQ5 (Default), Disabled, 3E8/IRQ10.