Introduction 1-1
Chapter 1
Introduction
The P55VPX mainboard is a high performance system hardware based
R
on Intel Pentium processor and is equipped with four PCI slots, four
standard ISA slots, Super Multi-I/O controller and dual port PCI-IDE
connectors for the future expansion. The hardware dimension is 220mm x
270mm with a four-layer-design technology.
Specification
VIA Apollo VPX/97 PCIset chipset.
R
Intel Pentium Processor, Pentium Processor with MMX Technology, AMD
K5/K6 & Cyrix 6x86/6x86L/6x86MX operating at 100 ~ 233 MHz with 321
ZIF Socket 7 provides scalability to accept faster Processors in the future.
Supports up to 256 MegaBytes of DRAM(72-Pin SIMM x 2, 168-Pin DIMM
x 2).
Supports 512KB (Pipelined Burst SRAM)) L2 Write Back/Through Cache.
Supports four 16 bit ISA slots and four 32 bit PCI slots and provides two
independent high performance PCI IDE interfaces capable of supporting
PIO Mode 3/4 and Ultra-DMA33 devices.
Supports ATAPI (e.g. CD-ROM) devices on both IDE interfaces.
Supports a floppy port, a parallel port (EPP,ECP port), two serial ports
(16550 Fast UART compatible), 1 USB Connector, a PS/2 style mouse
connecter and an AT style keyboard connector.
Supports Award Plug & Play BIOS.
Supports CPU Hardware sleep, APM (Advanced Power Management) and
ACPI (Advanced Configuration Power Interface).
Supports an ATX power supply connector for a Remote On/Off , a PhoneRing Power On and a Keyboard Power On Function.
Supports Switching Regulator for CPU power supply.
Single Jumper for CPU selection
Single Jumper for CPU working voltage selection.
1-2
P55VPX
P55VPX Layout
1
CN4
JP1
<
3
PRINTER
FDD CONN.
PCI#1
PCI#2
PCI#3
PCI#4
GND
+12V
GND
JP7
1 6
JP8
2.0V
2.8V
2.9V
3.2V
2.2V
SIMM 2
SIMM 1
82C586B
DIMM 2
DIMM 1
Secondary IDE
Primary IDE
VIA
ATX Power Conn.
1
AT Power Conn.
COM2
JP2
K/B
CONN.
COM1
USB Conn.
W83877F
BIOS
JP5
1 2
5V
3.3V
5 10
7 8
BANK0 BANK1 BANK2
VIA
82C587
Socket 7
82C585VPX
5
JP10
Note :
SPEAKER
JP11
RESET G-LED TB-LED HD-LED
POWER-ON 14
1
Means Pin 1
Figure 1-1
JP6
82C587
1
KEYLOCK
64K*64
26
13
Hardware Design
2-1
Chapter 2
Hardware design
2-1 Mainboard Layout
The P55VPX is designed with VIA Apollo VPX/97 PCIset chipset which is
R
developed by VIA Corporation to fully support Pentium Processor PCI/ISA system.
The VIA Apollo VPX/97 PCIset chipset can increase integration and improve
performance designs. The chipset provides an integrated IDE controller with two
high performance IDE interfaces for up to four IDE devices (hard devices, CD-ROM
device, etc). The Winbond W83877F Super I/O controller provides the standard PC I/
O function: floppy interface, two 16 Byte FIFO serial ports and EPP/ECP capable
parallel port. The P55VPX layout is shown in the previous page for user's reference.
Care must be taken when inserting memory modules, inserting CPU or even plugging PCI card into associated slots to avoid damaging any circuits or sockets on
board. A cooling fan is strongly recommended when installing P54C/P54CTB/P55C/
K5/K6/6x86/6x86L/6x86MX processor due to possible overheat.
The P55VPX supports a minimum of 8MB and a maximum of 256MB of System
Memory while Onboard 512KB cache to increase system performance. (Refer toPage
2-6 Cache Memory Configuration for the details.)
The P55VPX supports standard Fast Page, EDO (Extended Data Out or Hyper
Page Mode) or synchronous DRAM.The P55VPX provides two 72-pin SIMM
and two 168-pin DIMM sites for memory expansion. The sockets support 1M x
32(4MB), 2M x 32(8MB), 4M x 32(16MB), and 8M x 32(32MB) single-sided or doublesided memory modules. The memory timing requires 70 ns Fast page devices or 60
ns EDO DRAM. (DRAM Modules may be parity [x 36] or non-parity [x 32].
The P55VPX supports two Onboard PCI IDE connectors, and automatically detects
IDE harddisk type by BIOS utility automatic.
The P55VPX supports Award Plug & Play BIOS for the ISA and PCI cards. The
BIOS can be located in Flash EPROM which can replace BIOS code easily if necessary.
2-2
P55VPX
2-2 Connectors and Jumpers
This section describes all connectors and jumpers equipped in the mainboard. Please
refer to Figure 1-1 for location of each connector and jumper.
JP11
1
5
1
4
KeyLock - Keyboard lock switch & Power LED connector.
1.Power LED(+)
2.N/C
3.GND
4.Keylock
5.GND
Speaker - connect to the system's speaker for beeping.
1.Speaker
2.N/C
3.GND
4.GND
Reset Switch - Closed to restart system.
+
Power Saving LED indicator - LED ON when system is
in any Saving mode.
+
Turbo LED indicator - LED ON when higher speed is selected.
# There is no deturbo function so that the turbo LED is always ON.
+
IDE LED indicator - LED ON when Onboard PCI IDE
Harddisks activate.
Power-ON - Push the button to turn on the system.
- Pressing less than 4 seconds to enter the suspend mode
- Pressing more than 4 seconds to turn off the system
Hardware Design
JP1
1
5
JP10
5
IrDA/ASK IR CONNECTOR
1.VCC
2.NC
3.IRRX
4.GND
5.IRTX
1
The Power Supply (+12V) of the CPU Cooling FAN
1
JP7
3
JP2
PS/2 MOUSE CONNECTOR
1.RED wire
2.BLUE wire
3.GREEN wire
4.NC
5.YELLOW wire
1
3
1.GND
2.+12V
3.GND
Keyboard Power-ON Function Selection
1-2 : Disabled
2-3 : Enabled
1 2
JP5
DIMM Working Voltage Selection
1-2, 3-4 : 5V
5-6, 7-8 : 3.3V (Default)
(Refer to 2-3 : Memory Configuration for the detail)
7 8
2-3
2-4
P55VPX
JP6 : CPU Clock Rate Selection (Single Jumper)
CPU Pentium
1 14
JP6
1-14
2-15
3-16
4-17
5-18
6-19
7-20
8-21
9-22
10-23
11-24
12-25
13-26
13 26
Pentium MMX
AMD K5 / K6
100MHz
120MHz
133MHz
*
*
*
150MHz
166MHz
188MHz
200MHz
225MHz
233MHz
266MHz
300MHz
333MHz
Bus Freqency
x
Cyrix 6x86(L) / 6x86MX
Multiplier
IBM 6x86(L) / 6x86MX
66MHz x 1.5
60MHz x 2
66MHz x 2
75MHz x 2
60MHz x 2.5
66MHz x 2.5
75MHz x 2.5
66MHz x 3
75MHz x 3
66MHz x 3.5
66MHz x 4
66MHz x 4.5
66MHz x 5
*
*
*
*
6x86/L-PR150
6x86/LMX-PR166
6x86/L/MX-PR200
6x86MX-PR166
6x86MX-PR200
6x86MX-PR233
6x86MX-PR233
6x86MX-PR266
6x86MX-PR266
jumper settings are reserved for the future CPU
* These
versions. When the future CPU versions are ready and
suitable for this mainboard, these jumper settings will
be correctly updated.
R
TM
JP8 : CPU Vcore voltage selection : For Pentium Processor with MMX technology,
AMD K6 and Cyrix 6x86L/6x86MX
1 6
5
10
1-6
2-7
: 2.0V Reserved
: 2.8V for Pentium Processor with MMX technology
and Cyrix 6x86L
3-8 : 2.9V for AMD K6-PR2-166/200MHz and Cyrix
6x86MX
4-9 : 3.2V for AMD K6-PR2-233/266MHz
5-10 : 2.2V Reserved for AMD K6 in the future
Hardware Design
2-5
2-3 System Memory Configuration
The P55VPX supports different type of settings for the system memory. The
following figures and table provides all possible memory combinations.
SIMM2
SIMM1
>
>
>
DIMM2
DIMM1
BANK 2
BANK 1
BANK 0
DIMM 1
BANK 0
DIMM 2
BANK 1
SIMM 1,2
BANK 2
TOTAL
Memory
SDRAM
SDRAM
EDO/FP DRAM
MAX. = 256MB
4MB
8MB
8MB
x1
16MB
16MB
32MB
8MB
x1
32MB
16MB
x2
=
32MB
64MB
64MB
128MB
64MB
x1
x1
NONE
128MB
NOTE : 1. P55VPX supports both Fast Page DRAM and EDO DRAM SIMMs, but
they cannot be used in the same memory bank.
2. The KEY ZOOM of the DIMM socket is 3.3V / Unbuffered.
DRAM chip
LEFT KEY ZONE
CENTER KEY ZONE
2-6
P55VPX
The P55VPX supports 168-pin DIMM module to extend system memory size. You
can install (3.3V / Unbuffered) Fast Page, EDO or Synchronous DRAM. Besides, to
support 5VFP and EDO DRAM with DIMM socket, The P55VPX provides JP5 to
allow user using 3.3V/Unbuffered DIMM module with 5V FP and EDO DRAM
chips. The setting of the JP5 is shown as follows:
1 2
JP5
DIMM Working Voltage Selection
1-2, 3-4 : 5V
5-6, 7-8 : 3.3V (Default)
7 8
When you have a DIMM module to plug into a 168-pin dual readout connnector,
you must make sure that theKEY ZOOM of the DIMM module is 3.3V/Unbuffered
R
and supports Intel Pentium Processor System.
2-4 Cache Memory Configuration
The second level (L2) of cache is installed in the mainboard to increase the system
performance. The P55VPX supports different type of combinations for the cache
installation. Please refer to the following configurations for the details.
U21
64K*32
U24
TAG SRAM
U20
64K*32
DATA SRAM
SYN.CACHE
Size
On Board
(U20,U21)
256KB
32K*32 x 2
512KB
64K*32 x 2
Hardware Design
2-7
2-5 Integrated PCI Bridge
R
The P55VPX utilizes PCIset chipset to support Intel Pentium Processor PCI/ISA
system. The VIA Apollo VPX/97 PCIset chipset consists of the 82C585VP system
controller (TSC), two 82C587VP Data Path (TDP) devices, and one 82C586B PCI ISA/
IDE Accelerator bridge chip. It provides an interface which translates CPU cycle into
PCI bus cycle, and PCI burst read/write capability. In addition, it provides high
performance PCI arbitor to support four PCI Masters, Rotating Priority Mechanism,
and Hidden Arbitration Scheme Minimizes Arbitration Overhead.
There are four interrupts in each PCI slot : INTA#, INTB#, INTC#, and INTD#. Since
the P55VPX adapts the PCI auto-configuration with the system BIOS Setup utility.
When the system is turned on after adding a PCI add-in card, the BIOS automatically
configure interrupts, DMA channels, I/O space, and other paramaters. You do not
have to configure jumpers or worry about potential resource conflicts. Because PCI
cards use the same interrupt resource as ISA cards, you must specify the interrupt
used by ISA add-in cards in the BIOS Setup utility.
However, if a "Legacy card" (such as plugging a paddle card and cable into an ISA
slot) is plugged in the system, modification in the ROM SETUP UTILITY becomes
necessary. First of all, you must enter PCI CONFIGURATION SETUP utility from
the ROM SETUP UTILITY main menu to set "ISA" for the "PCI IDE IRQ MAP TO
Secondly, you must enter theCHIPSET FEATURES SETUP UTILITYfrom the ROM
SETUP UTILITY main menu and set "Disable" for the " Onboard Primary PCI IDE
and the Onboard Secondary PCI IDE. When you plug PCI/ISA IDE cards into the
system, You should select "Disabled" for the Onboard Primary and Secondary PCI
IDEfrom the CHIPSET FEATURES SETUP UTILITYtoo.
You can set the system interrupt request (IRQ) on some "Legacy cards" which have
on paddle card and cable. (refer to user's manual of the card) to a proper system IRQ
level (In general, card's Primary is assigned to INTA and Secondary is assigned to
INTB). If the card is plugged into slot 1(marked PCI#1), you cannot use second slot
(marked PCI#2) because the Secondary INT signal takes INTB from the slot (refer to
Page 3-12 for circuit diagram). The user then enters the PCI CONFIGURATION
SETUP utility from the ROM SETUP UTILITY main menu and set "PCI-Slot 1" for
the "PCI IDE IRQ MAP TO (This depends on the slot # where the Legacy card is
plugged).
.
Introduction 3-1
Chapter 3
ATX Power Control
Besides the AT power connector, the P55VPX equips an ATX power connector
which is a single 20-PIN input device for an ATX power supply (see Figure 3-3). An
ATX power supply provides a build-in Remote Power ON/OFF function. To implement the function, a momentary switch which is normally open should be connected
to the position JP11(PIN 24, 25) as the system's power ON/OFF button. Note that an
AT power supply does not offer this function.
Based on the ATX power connector, the P55VPX has been designed to support both
ACPI and Soft-OFF functions. According to the definition of ACPI, a Suspend mode
will be enabled while you push the JP11(system power ON/OFF) button less than 4
seconds. Nevertheless, the system will be turned off by pressing for more than 4
seconds. Regarding the Soft-OFF(coming from the P55VPX onboard circuit controller), it is another way to turn off your system. Your system can be shut down
automatically by an operation system such as Windows 95.
P55VPX BOARD
>
ATX
POWER
SUPPLY
JP11
System Power ON/OFF Button
Figure 3-3: Simple ATX Power ON/OFF Controller
3-2 P55VPX
3-1 External Modem Ring-in Power ON and Keyboard Power ON
Functions
On the basis of bounded functions in I/O chipset, the two serial ports are able to
support the External Modem Ring-in Power ON function. Once users connect the
external modem to COM1 or COM2, the P55VPX mainboard allows users to turn on
their system through the remote and host's dial-up control.
Exclusive Keyboard Power ON Function
To innovate a unique feature to benefit users, we devoted ourselves to create the
easiest and most convenient way to turn on your system based on the the ATX
power supply. This function is available only under system being connected to
ATX power supply.
How to work with it
Step 1: Please place JP2 at the position 2-3 after you finished the system installation.
JP2
1
3
Keyboard Power-ON Function Selection
1-2 : Disabled
2-3 : Enabled
Step 2: You can enjoy the Keyboard Power ON function bypressing any 1 or 2
keys on you keyboard at the same time for 1-2 seconds. Your system will be
turned on automatically, after releasing the keys. To power off you system,
you can use the Soft-OFF function under Windows 95.
Notes:
1. The number of keys needed to turn on a system depends on the model of
keyboard you are appplying due to different loadings on different keyboards.
Here, we would like to suggest you push 2 keys at the same time..
2. Intel ATX version 2.0 specification has recommended you use the power
supply with 0.72A(720mA). With our P55VPX mainboard, the 5.0VSB standby
power only has to be > = 0.1A (100mA) then you can enjoy this unique
benefit. However, the ATX power supply which is < 0.1 (100mA) is still
applicable to your system by placed JP2 at the position 1-2 to disable this
feature.
AWARD BIOS
4-1
CHAPTER 4
AWARD BIOS SETUP
Award's ROM BIOS provides a built-in setup program which allows user to modify the
basic system configuration and hardware parameters. The modified data will be stored
in a battery-backed CMOS RAM so data will be retained even when the power is turned
off. In general, the information saved in the CMOS RAM stays unchanged unless there
is a configuration change in the system, such as a hard drive replacement or a new device
installation.
If this does happen you will need to reconfigure your configuration parameter.
To Enter Setup Propgram
Power on the computer and press <Del> key immediately. This will bring you into BIOS
CMOS SETUP UTILITY.
ROM PCI/ISA BIOS(2A5LDPAB)
CMOSSETUPUTILITY
AWARD SOFTWARE, INC.
STANDARD CMOS SETUP
SUPERVISOR PASSWORD
BIOS FEATURES SETUP
USER PASSWORD
CHIPSET FEATURES SETUP
IDE HDD AUTO DETECTION
POWER MANAGEMENT SETUP
HDD LOW LEVEL FORMAT
PNP/PCI CONFIGURATION
SAVE & EXIT SETUP
INTEGRATED PERIPHERALS
EXIT WITHOUT SAVING
LOAD SETUP DEFAULTS
ESC : QUIT
F10
: Save & Exit Setup
: SELECT ITEM
(Shift)F2 : Change Color
Time, Date, Hard Disk Type...
Figure 4-1 CMOS SETUP UTILITY
The menu displays all major selection items. Select the item you need to reconfigure.
The selection is made by moving cursor (press any direction key ) to the item and
press the 'Enter' key. An on-line help message is displayed at the bottom of the
screen as the cursor is moving to various items which provides a better understanding of each function. When a selection is made, the menu of selected item will appear
so the user can modify the associated configuration parameters.
4-2
CHAPTER 4
4-1 STANDARD CMOS SETUP
Choose "STANDARD CMOS SETUP" in the CMOS SETUP UTILITY Menu (Fig.4-1).
The STANDARD CMOS SETUP allows user to configure system setting such as the
current date and time, type of hard disk drive installed, floppy drive type, and display type.
Memory size is auto-detected by the BIOS and displayed for your reference. When a field
is highlighted (use direction keys to move cursor and <Enter> key to select), the entries
in the field will be changed by pressing <PgDn> or <PgUp> keys or user can enter new
data directly from the keyboard.
ROM PCI/ISA BIOS(2A5LDPAB)
STANDARD CMOS SETUP
AWARD SOFTWARE, INC.
Date (mm:dd:yy) : Wed, Apr 17 1997
Time (hh:mm:ss) : 14 : 30 : 50
HARD DISKS
TYPE
Primary Master
: Auto
Primary Slave
: Auto
Secondary Master : Auto
Secondary Slave : Auto
SIZE
0
0
0
0
CYLS
0
0
0
0
HEAD
0
0
0
0
Drive A : 1.44M,3.5 in.
Drive B : None
Floppy 3 mode Support : Disable
Video : EGA/VGA
Halt On : All Errors
ESC : Quit
F1 : Help
(Shift) F2
PRECOMP
0
0
0
0
LANDZONE
0
0
0
0
SECTORS MODE
0
Auto
0
Auto
0
Auto
0
Auto
Base Memory
:
640K
Extended Memory: 15360K
Other Memory
:
384K
Total Memory : 16384K
: Select Item
: Change Color
PU/PD/+/- : Modify
Figure 4-2 STANDARD CMOS SETUP
NOTE: If the hard disk Primary Master/Slave and the Secondary Master/Slave are set
as "Auto", then the hard disk size and model will be auto-detected.
NOTE: The "Halt On :" field is to determine when to halt the system by the BIOS if an error
occurrs.
4-2 BIOS FEATURES SETUP
Selecting the "BIOS FEATURES SETUP" option in the CMOS SETUP UTILITY menu
allows user to change system related parameters in the displayed menu. This menu shows
all of the manufacturer's default values of the P55VPX. Again, user can move the cursor
by pressing direction keys and <PgDn> or <PgUp> keys to modify the parameters.
Pressing [F1] key to display help message of the selected item.
This setup program also provides 2 convenient ways to load the default parameter data
from BIOS[F6] or CMOS[F7] area if shown data is corrupted. This provides the system
a capability to recover from any possible error.
AWARD BIOS
4-3
ROM PCI/ISA BIOS(2A5LDPAB)
BIOS FEATURES SETUP
AWARD SOFTWARE, INC.
Virus Warning
CPU Internal Cache
External Cache
Quick Power On Self Test
Boot Sequence
Swap Floppy Drive
Boot Up Floppy Seek
Boot Up NumLock Status
Boot Up System Speed
Gate A20 Option
Typematic Rate Setting
Typematic Rate (Chars/Sec)
Type matic Delay (Msec)
Security Option
PCI/VGA Palette Snoop
OS Select For DRAM > 64MB
:
:
:
:
:
:
:
:
:
:
:
:
Disabled
Enabled
Enabled
Enabled
A, C
Disabled
Enabled
On
High
Fast
Disabled
6
: 250
: Setup
: Disabled
: Non-OS2
Video BIOS
C8000-CBFFF
CC000-CFFFF
D0000-D3FFF
D4000-D7FFF
D8000-DBFFF
DC000-DFFFF
Shadow
Shadow
Shadow
Shadow
Shadow
Shadow
Shadow
:
:
:
:
:
:
:
Enabled
Disabled
Disabled
Disabled
Disabled
Disabled
Disabled
Esc : Quit
: Select Item
F1 : Help
PU/PD/+/- : Modify
F5 : Old Values
(Shift)F2 : Color
F7 : Load Setup Defaults
Figure 4-3 BIOS FEATURES SETUP
Note: The Security Option contians "setup" and "system". The " setup" indicates
that the password setting is for CMOS only while the " system" indicates the password setting is for both CMOS and system boot up.
Virus Warning: This category flashes on the screen. During and after the system
boots up, any attempt to write to the boot sector or partition table of the hard disk
drive will halt the system and an error message will appear. You should then run an
anti-virus program to locate the virus. Keep in mind that this feature protects only the
boot sector, not the entire hard drive. Default value is Disabled.
Enabled : Activates automatically when the system boots up causing a warning
message to appear when any attempt to access the boot sector or
hard disk partition table.
Disabled: No warning message to appear when any attempt to access the boot sector
or hard disk partition table.
CPU Internal Cache / External Cache: These two categories speed up memory
access. However, it depends on CPU/chipset design. The default value is Enabled.
If your CPU is without Internal Cache then this item "CPU Internal Cache" will not
be shown.
Enabled: Enable cache.
Disable : Disable cache.
4-4
CHAPTER 4
Quick Power On Self Test:This category speeds up Power On Self Test (POST)
after you power on the computer. If it is set to Enable, BIOS will shorten or skip
some checking items during POST.
Enabled : Enable quick POST.
Disabled: Normal POST.
Boot Sequence:This category determines which drive is searched first for
the O/S(Operating System).The default value is A,C.
A,C :The system will search for floppy disk drive first then hard disk drive.
C,A :The system will search for hard disk drive first then floppy disk drive.
Swap Floppy Drive: This will swap your physical drive letters A&B if you are using
two floppy disks. The default value is Disabled.
Enabled : Floppy A & B will be swapped under the O/S.
Disabled : Floppy A & B will be not swapped.
Boot Up Floppy Seek: During Power-On-Self-Test (POST), BIOS will determine if the
floppy disk drive installed is 40 or 80 tracks. Only 360K type is 40 tracks while 760K,
1.2M and 1.44M are all 80 tracks. The default value is Enabled.
Enabled : BIOS searches for floppy disk drive to determine if it is 40 or 80 tracks.
Note that BIOS cannot tell from 720K, 1.2M or 1.44M drive type as they are
all 80 tracks.
Disabled: BIOS will not search for the type of floppy disk drive by track number.
Note that there will not be any warning message if the drive installed is
360K.
Boot Up NumLock Status: The default value is On.
On : Keypad is number keys.
Off : Keypad is arrow keys.
Boot UP System Speed: Select default system speed. The system will run at the
selected speed after the system boots.
High: Set the speed to high.
Low : Set the speed to low.
Gate A20 Option: This refers to the way the system addresses memory above 1MB
(extended memory). The default value is Fast.
Normal: The A20 signal is controlled by keyboard controller or chipset hardware.
Fast : The A20 signal is controlled by Port 92 or chipset specific method.
AWARD BIOS
4-5
Typematic Rate Setting: This determines the typematic rate.
Enabled : Enable typematic rate and typematic delay programming.
Disabled: Disable typematic rate and typematic delay programming. The system
BIOS will use default value of 2 items and the default is controlled by the
keyboard.
Typematic Rate(Chars/Sec):
6 :6
10: 10
15: 15
24: 24
characters per second.
characters per second.
characters per second.
characters per second.
8: 8
12: 12
20: 20
30: 30
characters per second.
characters per second.
characters per second.
characters per second.
Typematic Delay(Msec): This detecmines the time between the first and second
character displayed, when holding a key.
250 : 250msec.
500 : 500 msec.
750 : 750 msec.
1000: 1000 msec.
Security Option: This category allows you to limit access to the system and Setup,
or just to Setup. The default value is Setup.
System: The system will not boot and the access to Setup will be denied if the
correct password is not entered at the prompt.
Setup : The system will boot, but the access to Setup will be denied if the correct
password is not entered at the prompt.
PCI/VGA Palette Snoop: This filed controls the ability of a primary PCI VGA
controller to share a common palette (when a snoop write cycles) with an ISA
video card. The default value is Disabled.
Enabled:If an ISA card connects to a PCI VGA card via the VESA connector
and the ISA card connects to VGA monitor and uses the RAMDAC of
PCI card, the PCI/VGA Palette Snoop is enabled.
Disabled:Disable the VGA card Palette snoop function.
Video BIOS Shadow: It determines whether video BIOS will be copied to RAM,
however, it is optional from chipset design. Video Shadow will increase the video
speed.
Enabled :
Video shadow is enabled.
Disabled:
Video shadow is disabled.
4-6
CHAPTER 4
C8000 - CBFFF Shadow :
CC000 - CFFFF Shadow:
D0000 - D3FFF Shadow:
D4000 - D7FFF Shadow:
D8000 - DBFFF Shadow:
DC000 - DFFFF Shadow:
These categories determine whether optional ROM will be copied to RAM by 16K
byte or 32K byte perunit and the size depends on the chipset.
Enabled : Optional shadow is enabled.
Disabled: Optional shadow is disabled.
4-3 CHIPSET FEATURES SETUP
Choose the "CHIPSET FEATURES SETUP" in the CMOS SETUP UTILITY
menu to display the following menu.
ROM PCI/ISA BIOS(2A5LDPAB)
CHIPSET FEATURES SETUP
AWARD SOFTWARE, INC.
DRAM Auto Configuration
DRAM Timing Control
Video BIOS Cacheable
System BIOS Cacheable
Memory Hole At 15Mb Addr.
Fast DRAM Decoding
Sustained 3T Write
2 Bank PBSRAM
Read Pipeline
Write Pipeline
Cache Timing
Linear Burst
SDRAM Cycle Length
SDRAM Bank Interleave
: 60 ns
: Auto
: Enabled
: Disabled
: Disabled
: Disabled
: Enabled
: 3-1-1-1
: Enabled
: Enabled
: Fast
: Disabled
:2
: Disabled
Esc : Quit
: Select Item
F1 : Help
PU/PD/+/- : Modify
F5 : Old Values
(Shift)F2 : Color
F7 : Load Setup Defaults
Figure 4-4 CHIPSET FEATURES SETUP
Note:
When you insert slower memery modules in the system and set a faster
timing, maybe the system will hang up.
AWARD BIOS
4-7
DRAM Timing: The default value is 60ns.
60ns : 2 (faster) Burst Wait State, for 60~70ns Fast Page Mode/EDO DRAM.
70ns : 3 (slower) Burst Wait State, for 70ns Fast Page Mode/EDO DRAM.
Video BIOS Cacheable: The default value is Enabled.
Enabled : Enabled the Video BIOS Cacheable to speed up the VGA Performance.
Disabled: Disabled the Video BIOS Cacheable function.
Memory Hole at 15M-16M: The default value is Disabled.
Disabled: Normal Setting.
Enabled : This field enableds the main memory (15~16MB) remap to ISA BUS.
4-8
CHAPTER 4
4-4 POWER MANAGEMENT SETUP
Choose the "POWER MANAGEMENT SETUP" in the CMOS SETUP UTILITY
to display the following screen. This menu allows the user to modify the power
management parameters and IRQ signals. In general, these parameters should not
be changed unless it is absolutely necessary.
ROM PCI/ISA BIOS
POWER MANAGEMENT SETUP
AWARD SOFTWARE, INC.
Power Management
PM Control by APM
Video off Option
Video off Method
Conserve Mode
Modem Use IRO
** PM Timers **
HDD Power Down
Doze Mode
Suspend Mode
** PM Events **
VGA
LPT & COM
HDD & FDD
DMA /master
Primary INTR
IRQ3 (COM 2)
IRQ4 (COM 1)
: User Define
: Yes
: Suspend -> Off
: V/H SYNC+Blank
: Disabled
:3
: Disable
: Disable
: Disable
: OFF
: LPT /COM
: OFF
: OFF
: ON
: Primary
: Primary
** Power Down & Resume Events **
IRQ5 (LPT 2)
: Primary
IRQ6 (Floppy Disk)
: Disabled
IRQ7 (LPT 1)
: Primary
IRQ8 (RTC Alarm)
: Disabled
IRQ9 (IRQ2 Redir)
: Primary
IRQ10 (Reserved)
: Primary
IRQ11 (Reserved)
: Primary
IRQ12 (PS/2 Mouse)
: Primary
IRQ13 (Coprocessor)
: Primary
IRQ14 (Hard Disk)
: Primary
IRQ15 (Reserved)
: Disabled
Esc : Quit
: Select Item
F1 : Help
PU/PD/+/- : Modify
F5 : Old Values
(Shift)F2 : Color
F7 : Load Setup Defaults
Figure 4-5 POWER MANAGEMENT SETUP
Again, user can move the cursor by pressing direction keys to the field needed to be
modified and press <PgDn> or <PgUp> to alter item selection. You can only change
the content of Doze Mode, Standby Mode, and Suspend Mode when the Power
Management is set to 'User Define'.
4-4-1 The Description of the Power Management
A. Power Management mode selection :
Disabled
: The system operates in NORMAL conditions (Non-GREEN)
and the Power Management function is disabled.
Max. saving: This mode will maximize the power saving capability.
Min. saving: This mode will minimize the power saving capability.
User define: Allow user to define time-out parameters to control power saving
mode. Refer to item B shown below.
AWARD BIOS
4-9
B. Time-out parameters :
HDD Standby
HDD Standby timer can be set from 1 to 15 minute(s).
System Doze
The "System Doze" mode timer starts to count when there is no "PM events"
occurred. The valid time-out setting is from 1 minute up to 1 hour.
System Suspend
This function works only when the Pentium Procssor is installed. The timer starts
to count when "System Standby" mode timer is timed out and no "PM Events"
occurred. Valid range is from 1 minute up to 1 hour.
4-4-2
Description of the Green Functions
The P55VPX supports HDD Power Down, Doze and Suspend power saving functions.
In addition, the hardware suspend function is supported when the J11(24,25) (Refer
to Figure1-1) is closed to enter the Suspend function.
The detailed description of these functions is provided in the next page.
HDD Standby Mode
When system stops reading or wiriting HDD, the timer starts to count. The system will
cut off the HDD power when timer runs out of time. The system will not resume
operation until either a read from or a wirte to HDD command is executed again.
Doze Mode
The system hardware will drop down CPU clock from nomal working speed
when Doze mode time-out occurs.
Suspend Mode
When the system suspend timer times out, the system will enter the suspend mode
and the chipset will stop CPU clock immediately. The power consumption in
Suspend Mode is lower than in standby mode. The screen is also blanked out.
4-10
CHAPTER 4
PM Events:
AWARD BIOS defines 15 PM Events in the power management mode (Doze &
suspend). The user can initialize any PM Events to be "Enable" or "Disable".
When the system detects all of the enabled events, do not have any activity. It will
start the system Doze timer first if the "Power Management" is not "Disabled". Once
the system Doze timer is timed out, it will process doze power saving procedure
by starting the system suspend timer. When the suspend timer times out , all of the CPU
clock will stop by dropping system clock down to zero and remains this way
until any one of the "Enabled" event occurrs.
4-5
PNP/PCI CONFIGURATION
The PNP/PCI configuration program is for the user to modify the PCI/ISA IRQ signals
when various PCI/ISA cards are inserted in the PCI or ISA slots.
WARNING : Any misplacing IRQ could cause system can't pick out the rescouces.
ROM PCI/ISA BIOS(2A5LDPAB)
PNP/PCI CONFIGURATION
AWARD SOFTWARE, INC.
PNP Installed
Resources Controlled By
Reset Configuration Data
: No
: Manual
: Disabled
IRQ-3
IRQ-4
IRQ-5
IRQ-7
IRQ-9
IRQ-10
IRQ-11
IRQ-12
IRQ-14
IRQ-15
DMA-0
DMA-1
DMA-3
DMA-5
DMA-6
DMA-7
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
assigned
assigned
assigned
assigned
assigned
assigned
assigned
assigned
assigned
assigned
assigned
assigned
assigned
assigned
assigned
assigned
to
to
to
to
to
to
to
to
to
to
to
to
to
to
to
to
Legacy ISA
Legacy ISA
PCI/ISA PnP
Legacy ISA
PCI/ISA PnP
PCI/ISA PnP
PCI/ISA PnP
PCI/ISA PnP
Legacy ISA
Legacy ISA
PCI/ISA PnP
PCI/ISA PnP
PCI/ISA PnP
PCI/ISA PnP
PCI/ISA PnP
PCI/ISA PnP
CPU to PCI Write Buffer
PCI Dynamic Bursting
PCI Master 0 WS Write
PCI Peer Concurrency
PCI Delay Transaction
: Enabled
: Enabled
: Enabled
: Enabled
: Disabled
PCI IRQ Actived By
PCI IDE IRQ Map To
Primary
IDE INT#
Secondary IDE INT#
: Level
: PCI-AUTO
:A
:B
ESC : Quit
F1 : Help
PU/PD/+/F5 : No Change
(Shift) F2
F7 : Load Setup Defaults
: Select Item
: Modify
: Color
Figure 4-6 PCI CONFIGURATION SETUP
AWARD BIOS
4-11
Resource Controlled By:The default value is Manual.
Manual: The field defines that the PNP Card's resource is controlled by manual.
You can set whethe IRQ-X or DMA-X is assigned to PCI/ISA PNP or
Legacy ISA Cards.
Auto: If your ISA card and PCI card are all PNP cards. Set this field Auto.
The BIOS will assign the interrupt resource automatically.
Reset Configuration Data: The default value is Disabled.
Disabled: Normal Setting
Enabled: If you plug some Legacuy cards in the system and record into ESCD
(Extended System Configuration Data). You can set this field to be Enabled
and to clear ESCD at one time, when some Legacy cards are removed.
PCI IDE IRQ Map To:The default value is PCI-AUTO.
When you have true PCI card(s) plugged into the system, you will not need
to change any thing here in the SETUP program. However, if you do not
know whether you are using a true PCI card, please refer to your PCI
card user's manual for the details.
When you have a Legacy card (described in section 2-5) to plug
into the system,a proper setting is extremely important or it may cause the
system hung up. The diagram shown below tells you how the Rotating
Priority Mechanism is designed.
PCI#4
PCI#3
PCI#2
INTD
INTC
INTB
PCI#1
INTA
INTA
INTD
INTC
INTB
INTB
INTA
INTD
INTC
INTC
INTB
INTA
INTD
INTA
INTB
INTC
INTD
Figure 4-7 The Combination of PCI INT# lines
PCI
Chipset
4-12
4-6
CHAPTER 4
INTEGRATED PERIPHERALS
ROM PCI/ISA BIOS(2A5LDPAB)
INTEGRATED PERIPHERALS
WARD SOFTWARE, INC.
Onboard Primary PCI IDE
Onboard Secondary PCI IDE
IDE Prefetch Mode
IDE HDD Block Mode
IDE primary Master PIO
IDE Primary Slave PIO
IDE Secondary Master PIO
IDE Secondary Slave PIO
IDE Primary Master UDMA
IDE Primary Slave UDMA
IDE Secondary Master UDMA
IDE Secondary Slave UDMA
PCI IDE Secondary Channel
Onboard FDC Controller
UART 2 Mode
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
Enabled
Enabled
Enabled
Enabled
Auto
Auto
Auto
Auto
Auto
Auto
Auto
Auto
Enabled
Enabled
Standard
Onboard Parallel Port
Onboard Parallel Mode
ECP Mode Use DMA
Parallel Port EPP Type
: 378/IRQ7
: ECP / EPP
:3
: EPP1.9
Onboard USB Controller
: Disabled
ESC : Quit
: Select Item
F1 : Help
PU/PD/+/- : Modify
F5 : No Change
(Shift) F2 : Color
F7 : Load Setup Defaults
Note: If you don't use the Onboard IDE connector, then use On-card
(PCI or ISA card) IDE connector. You have to set Onboard Primary
PCI IDE: Disabled and Onboard Secondary PCI IDE: Disabled
from CHIPSET FEATURES SETUP UTILITY.
The Onboard PCI IDE cable should be equal to or less than
18 inches (45 cm.).
IDE HDD Block Mode: The default value is Enabled.
Enabled : Enabled IDE HDD Block Mode. The HDD transfer rate is better than
Disable.
Disabled: Disable IDE HDD Block Mode.
PCI Slot IDE 2nd Channel: The default value is Enabled.
Enabled : Enable secondary IDE port and BIOS will assign IRQ15 for this port.
Disabled : Disable secondary IDE port and IRQ15 is available for other device.
Onboard Primary PCI IDE: The default value is Enabled.
Enabled : Enable Onboard 1st channel IDE port.
Disabled : Disable Onboard 1st channel IDE port. When use On-card (PCI or ISA
card) IDE connector.
Onboard Secondary PCI IDE: The default value is Enabled.
Enabled : Enable Onboard 2nd channel IDE port.
Disabled : Disable Onboard 2nd channel IDE port When use On-card (PCI or ISA
card) IDE connector.
AWARD BIOS
4-13
IDE Primary Master PIO: The default value is Auto.
Auto
: BIOS will automatically detect the Onboard Primary Master PCI
IDE HDD Accessing mode.
Mode0~4
: Manually set the IDE Accessing mode.
IDE Primary Slave PIO: The default value is Auto.
Auto
: BIOS will automatically detect the Onboard Primary Slave PCI IDE
HDD Accessing mode.
Mode0~4
: Manually set the IDE Accessing mode.
IDE Secondary Master PIO: The default value is Auto.
Auto
: BIOS will automatically detect the Onboard Secondary Master PCI
IDE HDD Accessing mode.
Mode0~4
: Manually set the IDE Accessing mode.
IDE Secondary Slave PIO: The default value is Auto.
Auto
: BIOS will automatically detect the Onboard Secondary Slave PCI
IDE HDD Accessing mode.
Mode0~4
: Manually set the IDE Accessing mode.
Onboard FDC Controller: The default value is Enabled.
Enabled
: Enable the Onboard SMC CHIP's floppy drive interface controller.
Disabled
: Disable the Onboard SMC CHIP's floppy drive interface controller,
When using On-card ISA FDC's controller.
Onboard UART 1: This field allows the user to sellect the serial port. The default
value is 3F8H/IRQ4.
COM1: Enable Onboard Serial port 1 and address is 3F8H/IRQ4.
COM2: Enable Onboard Serial port 1 and address is 2F8H/IRQ3.
COM3: Enable Onboard Serial port 1 and address is 3E8H/IRQ4.
COM4: Enable Onboard Serial port 1 and address is 2E8H/IRQ3.
Disabled: Disable Onboard SMC CHIP's Serial port 1.
Onboard UART 2: This field allows the user to sellect the serial port. The default
value is 2F8H/IRQ3.
COM1: Enable Onboard Serial port 2 and address is 3F8H/IRQ4.
COM2: Enable Onboard Serial port 2 and address is 2F8H/IRQ3.
COM3: Enable Onboard Serial port 2 and address is 3E8H/IRQ4.
COM4: Enable Onboard Serial port 2 and address is 2E8H/IRQ3.
Disabled: Disable Onboard SMC CHIP's Serial port 2.
4-14
CHAPTER 4
Onboard UART 2 Mode:The default value is standard. This field allows the User to
select the COM2 port that can support a serial Infrared Interface.
Standard: Support a Serial Infrared Interface IrDA.
HPSIR: Support a HP Serial Infrared Interface format.
ASKIR: Support a Sharp Serial Infrared Interface format.
Onboard Parallel port: This field allows the user to sellect the LPT port. The
default value is 378H/IRQ7.
378H
: Enable Onboard LPT port and address is 378H and IRQ7
278H
: Enable Onboard LPT port and address is 278H and IRQ5.
3BCH
: Enable Onboard LPT port and address is 3BCH and IRQ7.
Disabled
: Disable Onboard SMC CHIP's LPT port.
NOTE: Parallel Port address is 378H/3BCH that selects the rounting of IRQ7 for LPT1.
Parallel Port address is 278H that selects the rounting of IRQ5 for LPT1.
Parallel port Mode: This field allows the user to sellect the parallel port mode.
The default value is ECP+EPP.
Normal
: Standard mode. IBM PC/AT Compatible bidirectional parallel port.
EPP
: Enhanced Parallel Port mode.
ECP
: Extended Capability Port mode.
EPP+ECP : ECP Mode & EPP Mode.
ECP Mode USE DMA: This field allows the user to sellect DMA1 or DMA3 for
the ECP mode. The default value is DMA3.
DMA1
: The filed selects the rounting of DMA1 for the ECP mode.
DMA3
: The filed selects the rounting of DMA3 for the ECP mode.
4-7
LOAD SETUP DEFAULTS
The "LOAD SETUP DEFAULTS" function loads the system default data directly
from ROM and initializes the associated hardware properly. This function will be
necessary only when the system CMOS data is corrupted.
AWARD BIOS
4-15
ROM PCI/ISA BIOS(2A5LDPAB)
CMOSSETUPUTILITY
AWARD SOFTWARE, INC.
STANDARD CMOS SETUP
SUPERVISOR PASSWORD
BIOS FEATURES SETUP
USER PASSWORD
CHIPSET FEATURES SETUP
IDE HDD AUTO DETECTION
POWER MANAGEMENT SETUP
HDD LOW LEVEL FORMAT
PNP/PCI CONFIGURA
Load SETUP Default (Y/N)? Y
INTEGRATED PERIPH
ETUP
SAVING
LOAD SETUP DEFAULTS
ESC: QUIT
F10:Save & Exit Setup
:SELECT ITEM
(Shift)F2 :Change Color
Load Setup Defaults Except Standard COMS SETUP
Figure 4-8 LOAD SETUP DEFAULT
4-8
CHANGE SUPERVISOR or USER PASSWORD
To change the password, choose the "SUPERVISOR PASSWORD or USER PASSWORD " option from the CMOS SETUP UTILITY menu and press [Enter].
NOTE : Either " Setup" or "System" must be selected in the "Security Option" of the
BIOS FEATURES SETUP menu (Refer to Figure 4-3 for the details).
1. If CMOS is corrupted or the option is not used, a default password stored in the ROM
will be used. The screen will display the following message:
Enter Password:
Press the [Enter] key to continue after proper password is given.
2. If CMOS is corrupted or the option was used earlier and the user wish to change
default password, the SETUP UTILITY will display a message and ask for a
confirmation.
Confirm Password:
3. After pressing the [Enter] key (ROM password if the option was not used) or current
password (user-defined password), the user can change the password and store new
one in CMOS RAM. A maximum of 8 characters can be entered.
4-16
CHAPTER 4
4-9 IDE HDD AUTO DETECTION
The "IDE HDD AUTO DETECTION" utility is a very useful tool especially when you
do not know which kind of hard disk type you are using. You can use this utility to detect
the correct disk type installed in the system automatically. But now you can set HARD
DISK TYPE to Auto in the STANDARD CMOS SETUP. You do not need the "IDE HDD
AUTO DETECTION" utility. The BIOS will Auto-detect the hard disk size and model on
display during POST.
ROM PCI/ISA BIOS(2A5LDPA9)
CMOS SETUP UTILITY
AWARD SOFTWARE, INC.
HARD DISKS
TYPE SIZE CYLS HEADS PRECOMP LANDZONE SECTORS MODE
Primary Master :
Primary Slave
:
Secondary Master :
Secondary Slave :
343
665
16
65535
664
63
NORMAL
Select Secondary Slave Option (N=Skip) : N
OPTIONS
1 (Y)
SIZE CYLS HEAD PRECOMP LANDZ SECTOR MODE
0
0
0
0
0
0 NORMAL
ESC : Skip
Figure 4-9 IDE HDD AUTO DETECTION
NOTE: HDD Modes
The Award BIOS supports 3 HDD modes : NORMAL, LBA and LARGE
NORMAL mode.
Generic access mode that is neither the BIOS nor the IDE controller will
make transformations during accessing.
The maximum nunbers of cylinders, head & sectors for NORMAL mode are
1024, 16 and 63.
no. Cyclinder
(1024)
x no. Head
( 16)
x no. Sector
( 63)
x no. per sector
( 512)
528 Megabytes
If user sets his HDD to NORMAL mode, the maximum accessible HDD size
will be 528 Megabytes even though its physical size may be greater than that!
AWARD BIOS
4-17
LBA (Logical Block Addressing) mode: This is a new HDD accessing method to
overcome the 528 Megabyte bottleneck.
The number of cylinders, heads and sectors shown in the setup may not be the number
physically contained in the HDD.
During the HDD accessing, the IDE controller will transform the logical address
described by sector, head and cylinder into its own physical address inside the HDD.
The maximum HDD size supported by LBA mode is 8.4 Gigabytes which is
obtained by the following formula:
no. Cyclinder
(1024)
x no. Head
( 255)
x no. Sector
( 63)
x bytes per secttor
( 512)
8.4 Gigabytes
LARGE mode: This is an extended HDD access mode supported by Award Software.
Some IDE HDDs contain more than 1024 cylinders without LBA support (in some
cases, user does not want LBA). The Award BIOS provides another alternative to
support these kinds of LARGE mode:
CYLS.
1120
560
HEADS
16
32
SECTOR
MODE
59
NORMAL
59
LARGE
BIOS tricks DOS (or other OS) that the number of cylinders is less than 1024 by
dividing it by 2. At the same time, the number of heads is multiplied by 2. A reverse
transformation process will be made inside INT 12h in order to access the right
HDD address
Maximum HDD size:
no. Cyclinder
(1024)
x no. Head
( 32)
x no. Sector
( 63)
x bytes per sector
( 512)
1 Gigabytes
4-18
CHAPTER 4
Note:
To support LBA or LARGE mode of HDDs, there must be some softwares involved. All
softwares are located in the Award HDD Service Routine (1NT 13h). It may fail to access
a HDD with LBA (LARGE) mode selected if you are running under on Operating System
which replaces the whole 1NT 13h. UNIX operating systems do not support either LBA
or LARGE and must utilize the Standard mode. UNIX can support drives larger than
528MB.
4-10
HDD LOW LEVEL FORMAT
Interleave
Selecttheinterleavenumberoftheharddiskdrivethatyouwishtoperformalow
levelformaton.Youmayselectfrom1to8.Checkthedocumentationthat
camewiththedriveforthecorrectinterleavenumber,orselect0forautomatic
detection.
Auto scan bad track
This allows the utility to scan first then format by each track.
Start
Press<Y>to start low level format.
4-11
SAVE & EXIT SETUP
The "SAVE & EXIT SETUP" option will bring you back to boot up procedure
with all the changes you just recorded in the CMOS RAM.
4-12
EXIT WITHOUT SAVING
The "EXIT WITHOUT SAVING" option will bring you back to normal boot up
procedure without saving any data into CMOS RAM. All old data in the CMOS
will not be destroyed.
TECHNICAL INFORMATION
5-1
Chapter 5
Technical Information
5-1 I/O & MEMORY MAP
MEMORY MAP
Address Range
[00000-7FFFF]
[80000-9FBFF]
[9FC00-9FFFF]
[A0000-C7FFF]
[C8000-DFFFF]
[E0000-EEFFF]
[EF000-EFFFF]
[F0000-F7FFF]
[F8000-FCFFF]
[FD000-FDFFF]
[FE000-FFFFF]
Size
512K
127K
1K
160K
96K
60K
4K
32K
20K
4K
8K
Description
Conventional memory
Extended Conventional memory
Extended BIOS data area if PS/2 mouse is installed
Available for Hi DOS memory
Available for Hi DOS memory and adapter ROMs
Available for UMB
Video service routine for Monochrome & CGA adaptor
BIOS CMOS setup utility
BIOS runtime service routine (2)
Plug and Play ESCD data area
BIOS runtime service routine (1)
I/O MAP
[000-01F]
[020-021]
[022-023]
[040-05F]
[060-06F]
[070-07F]
[080-09F]
[0A0-0BF]
[0C0-0DF]
[0F0-0FF]
[1F0-1F8 ]
[278-27F]
[2B0-2DF]
[2F8-2FF]
[360-36F]
[378-37F]
[3B0-3BF]
[3C0-3CF]
[3D0-3DF]
[3F0-3F7]
[3F8-3FF]
DMA controller.(Master)
INTERRUPT CONTROLLER.(Master)
CHIPSET control registers. I/O ports.
TIMER control registers.
KEYBOARD interface controller.(8042)
RTC ports & CMOS I/O ports.
DMA register.
INTERRUPT controller.(Slave)
DMA controller.(Slave)
MATH COPROCESSOR.
HARD DISK controller.
PARALLEL port 2.
GRAPHICS adapter controller.
SERIAL port 2.
NETWORK ports.
PARALLEL port 1.
MONOCHROME & PARALLEL port adapter.
EGA adapter.
CGA adapter.
FLOPPY DISK controller.
SERIAL port 1.
5-2
CHAPTER 4
5-2 TIME & DMA CHANNELS MAP
TIME MAP:
DMA CHANNELS :
TIMER Channel 0
TIMER Channel 1
TIMER Channel 2
DMA Channel 0
DMA Channel 1
DMA Channel 2
DMA Channel 3
DMA Channel 4
DMA Channel 5
DMA Channel 6
DMA Channel 7
System timer interrupt.
DRAM REFRESH request.
SPEAKER tone generator.
Available.
Onboard ECP (Option).
FLOPPY DISK (SMC CHIP).
Onboard ECP (default).
Cascade for DMA controller 1.
Available.
Available.
Available.
5-3 INTERRUPT MAP
NMI :
IRQ (H/W) :
Parity check error.
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
System TIMER interrupt from TIMER 0.
KEYBOARD output buffer full.
Cascade for IRQ 8-15.
SERIAL port 2.
SERIAL port 1.
PARALLEL port 2.
FLOPPY DISK (SMC CHIP).
PARALLEL port 1.
RTC clock.
Available.
Available.
Available.
PS/2 Mouse.
MATH coprocessor.
Onboard HARD DISK(IDE1) channel.
Onboard HARD DISK(IDE2) channel.
TECHNICAL INFORMATION
5-4 RTC & CMOS RAM MAP
RTC & CMOS :
00
01
02
03
04
05
06
07
08
09
0A
0B
0C
0D
0E
0F
10
11
12
13
14
15
16
17
18
19-2d
2E-2F
30
31
32
33
34-3F
40-7F
Seconds.
Second alarm.
Minutes.
Minutes alarm.
Hours.
Hours alarm.
Day of week.
Day of month.
Month.
Year.
Status register A.
Status register B.
Status register C.
Status register D.
Diagnostic status byte.
Shutdown byte.
FLOPPY DISK drive type byte.
Reserve.
HARD DISK type byte.
Reserve.
Equipment type.
Base memory low byte.
Base memory high byte.
Extension memory low byte.
Extension memory high byte.
Reserved for ectension memory low bytw.
Reserved for extension memory high byte.
DATE CENTURY byte.
INFORMATION FLAG.
Reserve.
Reserved for CHIPSET SETTING DATA.
5-3
5-4
CHAPTER 4
APPENDIX A: POST CODES
ISA POST codes are typically output to port address 80h.
POST(hex) DESCRIPTION
01-02
Reserved.
C0
Turn off OEM specific cache, shadow.
03
1.Initialize EISA registers (EISA BIOS only).
2.Initialize all the standard devices with default values Standard devices includes.
-DMA controller (8237).
-Programmable Interrupt Controller (8259).
-Programmable Interval Timer (8254).
-RTC chip.
04
Reserved
05
1.Keyboard Controller Self-Test.
2.Enable Keyboard Interface.
06
Reserved.
07
Verifies CMOS's basic R/W functionality.
C1
Auto-detection of onboard DRAM & Cache.
C5
Copy the BIOS from ROM into E0000-FFFFF shadow RAM so that POST will
go faster.
08
Test the first 256K DRAM.
09
OEM specific cache initialization. (if needed)
0A
1.Initialize the first 32 interrupt vectors with corresponding Interrupt handlers
Initialize INT no from 33-120 with Dummy (Suprious)
Interrupt Handler.
2.Issue CPUID instruction to identify CPU type.
3.Early Power Management initialization. (OEM specific)
0B
1.Verify the RTC time is valid or not.
2.Detect bad battery.
3.Read CMOS data into BIOS stack area.
4.PnP initializations including. (PnP BIOS only)
-Assign CSN to PnP ISA card.
-Create resource map from ESCD.
5.Assign IO & Memory for PCI devices. (PCI BIOS only)
TECHNICAL INFORMATION
5-5
POST(hex) DESCRIPTION
0C
Initialization of the BIOS Data Area. (40:ON - 40:FF)
0D
1.Program some of the Chipset's value according to Setup. (Early Setup Value
Program)
2.Measure CPU speed for display & decide the system clock speed.
3.Video initialization including Monochromc, CGA, EGA/VGA. If no display
device found, the speaker will beep.
0E
1.Test video RAM. (If Monochromc display device found)
2.Show messages including.
-Award Logo, Copyright string, BIOS Data code & Part No.
-OEM specific sign on messages.
-Energy Star Logo. (Green BIOS ONLY)
-CPU brand, type & speed.
-Test system BIOS checksum. (Non-Compress Version only)
0F
DMA channel 0 test.
10
DMA channel 1 test.
11
DMA page registers test.
12-13
Reserved.
14
Test 8254 Timer 0 Counter 2.
15
Test 8259 interrupt mask bits for channel 1.
16
Test 8259 interrupt mask bits for channel 2.
17
Reserved.
19
Test 8259 functionality.
1A-1D
Reserved.
1E
If EISA NVM checksum is good, exccute EISA initialization. (EISA BIOS only)
1F-29
Reserved.
30
Detect Base Memory & Extended Memory Size.
31
1.Test Base Memory from 256K to 640K.
2.Test Extended Memory from 1M to the top of memory.
5-6
CHAPTER 4
POST(hex) DESCRIPTION
32
1.Display the Award Plug & Play BIOS Extension message. (PnP BIOS only)
2.Program all onboard super I/O chips (if any) including COM ports, LPT
ports, FDD port ... according to setup value.
33-3B
Reserved.
3C
Set flag to allow users to enter CMOS Setup Utility.
3D
1.Initialize Keyboard.
2.Install PS2 mouse.
3E
Try to turn on Level 2 cache.
Note : Some chipset may need to turn on the L2 cache in this stage. But
usually, the cache is turn on later in POST 61h.
3F-40
Reserved.
BF
1.Program the rest of the Chipset's value according to Setup. (Later Setup Value
Program)
2.If auto-configuration is enabled, programmed the chipset with pre-defined
Values.
41
Initialize floppy disk drive controller.
42
Initialize Hard drive controller.
43
If it is a PnP BIOS, initialize serial & parallel ports.
44
Reserved.
45
Initialize math coprocessor.
46-4D
Reserved.
4E
If there is any error detected (such as video, kb...), show all the error messages
on the screen & wait for user to press <F1> key.
4F
1.If password is needed, ask for password.
2.Clear the Energy Star Logo. (Green BIOS only)
50
Write all CMOS values currently in the BIOS stack area back into the CMOS.
51
Reserved.
TECHNICAL INFORMATION
5-7
POST(hex) DESCRIPTION
52
1.Initialize all ISA ROMs.
2.Later PCI initializations. (PCI BIOS only)
-assign IRQ to PCI devices.
-initialize all PCI ROMs.
3.PnP Initialzations. (PnP BIOS only)
-assign IO, Memory, IRQ & DMA to PnP ISA devices.
-initialize all PnP ISA ROMs.
4.Program shadows RAM according to Setup settings.
5.Program parity according to Setup setting.
6.Power Management Initialization.
-Enable/Disable global PM.
-APM interface initialization.
53
1.If it is NOT a PnP BIOS, initialize serial & paralled ports.
2.Initialize time value in BIOS data area by translate the RTC time value into
a timer tick value.
60
Setup Virus Protection. (Boot Sector Protection) functionality according to Setup
setting.
61
1.Try to turn on Level 2 cache.
Note : if L2 cache is already turned on in POST 3D, this part will be skipped.
2.Set the boot up speed according to Setup setting.
3.Last chance for Chipset initialization.
4.Last chance for Power Management initialization. (Green BIOS only)
5.Show the system configuration table.
62
1.Setup daylight saving according to Setup value.
2.Program the NUM Lock, typematic rate & typematic speed according to Setup
setting.
63
1.If there is any changes in the hardware configuration, update the ESCD
information. (PnP BIOS only)
2.Clear memory that have been used.
3.Boot system via INT 19H.
FF
System Booting. This means that the BIOS already pass the control right to the
operating system.
Unexpected Errors:
POST(hex) DESCRIPTION
B0
If interrupt occurs in protected mode.
B1
Unclaimed NMI occurs.
5-8
CHAPTER 4
APPENDIX B: I/O CONNECTORS
JP1 : PS/2 MOUSE CONNECTOR:
Pin
1
1
2
3
4
5
5
Signal Name
Data
Clock
GND
NC
VCC
(Red Wire)
(Blue Wire)
(Green Wire)
(Yellow Wire)
CN2/COM1,CN3/COM2 : Serial Ports Connector
1
5
6
10
Signal Name
DCD
SIN
SOUT
DTR
GND
Pin
Pin
Signal Name
1
2
3
4
5
6
7
8
9
10
DSR
RTS
CTS
RI
N.C.
Signal Name
Pin
Pin
Signal Name
STROBEData Bit 0
Data Bit 1
Data Bit 2
Data Bit 3
Data Bit 4
Data Bit 5
Data Bit 6
Data Bit 7
ACJBUSY
PE
SLCT
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
CN5 : Parallel Port Connector
1
14
13
26
AUTO FEEDERRORINITSLCT INGround
Ground
Ground
Ground
Ground
Ground
Ground
Ground
N.C.
TECHNICAL INFORMATION
5-9
CN6 : Floppy Disk Connector
Signal Name
1
2
33
34
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Pin
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
Pin
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
Signal Name
FDHDIN
Reserved
FDEDIN
IndexMotor Enable
Drive Select BDrive Select AMotor Enable
DIRSTEPWrite Data
Write Gate
Track 00Write ProtectRead DataSIDE 1 SELECTDiskette
CN8/CN7 : Primary, Secondray IDE Connector
1
39
2
40
Signal Name
Reset IDE
Host Data 7
Host Data 6
Host Data 5
Host Data 4
Host Data 3
Host Data 2
Host Data 1
Host Data 0
Ground
DRQ3
I/O WriteI/O ReadIOCHRDY
DACK3IRQ14
Addr 1
Addr 0
Chip Select 0Activity
Pin
Pin
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
35
37
39
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
32
38
40
Signal Name
Ground
Host Data 8
Host Data 9
Host Data 10
Host Data 11
Host Data 12
Host Data 13
Host Data 14
Host Data 15
Key
Ground
Ground
Ground
BALE
Ground
IOCS16Ground
Addr 2
Chip Select 1Ground
5-10
CHAPTER 4
CN4: USB Connector:
1
USB Port 1
USB Port 2
PS/2 Mouse Connector
1
Figure 5-1 USB Port Adapter
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