AMB-2020HT(T)-E User’s Manual
33
Primary / Secondary IDE Channel
These fields allow your system’s hard disk controller to work faster. Rather than have the BIOS issue a
series of commands that transfer to or from the disk drive, PIO (Programmed Input/Output) allows the
BIOS to communicate with controller and CPU directly.
The system supports five modes, numbered from 0 (default) to 4, which primarily differ in timing. When
Auto is selected, the BIOS will select the best available mode.
IDE Primary Master/Slave UDMA And Secondary Master/Slave
UDMA
This field allows your system to improve disk I/O throughput with the Ultra DMA feature in the hard disk
drive. The options are
Auto
and
Disabled
.
KBC Input Clock
The default setting for the keyboard controller input clock is
8 MHz
.
Onboard FDC Controller
This option allows you to select the onboard FDD port.
Onboard Serial/Parallel Port
These fields allow you to select the onboard serial/parallel port and its address. The default values for
these ports are:
Serial Port 1
3F8/IRQ4
Serial Port 2
2F8/IRQ3
Serial Port 3
3E8/IRQ10
Serial Port 4
2E8/IRQ9
Parallel Port
378H/IRQ7
UR2 Mode
This field determines the UART 2 mode in your computer. The options are
Standard
,
HPSIR
, and
ASKIR
.
Onboard Parallel Mode
This field allows you to determine parallel port mode function.
Normal
Normal Printer Port
EPP
Enhanced Parallel Port
ECP
Extended Capabilities Port
ECP+EPP
Extended Capabilities Port or Enhanced Parallel Port
Build in CPU Audio
When enabled, other relevant Audio parameters are open for configuration. These include Audio I/O Base
Address, MPU-401 I/O Base Address, Audio IRQ Select, Audio Low DMA Select, and Audio High
DMA Select.
