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4.2.9. Integrated Peripherals
On-Chip Primary IDE
controller
Master PIO
Slave PIO
Master UDMA
Slave UDMA
IDE HDD Block Mode
Ethernet Controller 1
USB Keyboard Support
PS/2 Mouse Function Control
Onboard FDC Controller
Onboard Serial Port 1
Onboard Serial Port 2
Onboard Parallel Port
Parallel Port Mode
ECP Mode Use DMA
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Option
BIOS
Setup
Defaults
Defaults
En.
En.
Auto
Auto
Dis.
Auto
Dis.
En.
En.
En.
OS
OS
Auto
Auto
En.
En.
3F8/
3F8/
IRQ4
IRQ4
RS-232
RS-232
378/ IRQ7 378/ IRQ7
ECP
ECP
+
+
EPP1.9
EPP1.9
3
3
Possible
Description
Settings
Select Enabled to activate the IDE controller. The four
En./Dis.
options below appear only if the On-Chip Primary option is
enabled.
Use this option to set a PIO mode (0-4) for each of the
onboard IDE devices. Modes 0 through 4 provide
Auto,
successively increased performance and speed. In Auto
Modes
mode, the system automatically determines the best mode
0-4
for each device. If you select a mode that the drive does
not support, it may not work, so choose a lesser value or
Auto to see the best mode for the drive.
Ultra DMA/33 implementation is possible only if your IDE
hard drive supports it and the operating environment
Auto,
includes a DMA driver (Windows 95 OSR2 or a third-party
Disabled.
IDE bus master driver). If your hard drive and your system
software both support Ultra DMA/33, select Auto to enable
BIOS support.
Block mode is also called block transfer, multiple
commands, or multiple sector read/write. If your IDE hard
En./Dis.
drive supports block mode (most new drives do), select
Enabled for automatic detection of the optimal number of
block read/writes per sector the drive can support.
En./Dis.
Enables/disables the onboard Ethernet controller.
This option is for DOS and BIOS support only (Win 95 has
it is own drivers). It does not enable or disable the USB
OS/BIOS
controller.
When set to Auto, the PS/2 mouse is automatically
Auto/Dis.
enabled, if it is present.
Select Disabled to disable the onboard floppy disk
En./Dis.
controller (FDC).
Dis,
3F8/IRQ4,
2F8/IRQ3,
Select a COM port address and IRQ# for Serial Port 1
3E8/IRQ4,
2E8/IRQ3
RS-232
RS-422
Select a COM port address for Serial Port 2.
RS-485
Disabled
3BC/IRQ7
Select a LPT address and IRQ# for the physical parallel
378/IRQ7
(printer) port.
278/IRQ5
SPP,
EPP1.9+SP
P, ECP
Select an operating mode for the onboard parallel port.
ECP+EPP1.
Select ECP or EPP unless you are certain both your
9, Normal,
hardware and software does not support ECP or EPP
EPP1.7+SP
mode.
P,
ECP+EPP1.
7
1, 3
Select a DMA channel for the parallel port.
4-15
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