Clearing CMOS and Passwords
Passwords may need to be changed, or the computer’s configuration (CMOS) may occasionally be
corrupted. Both can be cleared using jumper JP5.
1. Turn off the computer and any external devices, then disconnect the power cord from the
power outlet.
2. Remove the access panel on the left side of the computer.
3. Locate the header labeled JP5. Place a jumper across pins 1 & 2 on JP5.
4. Connect the power cord to the power outlet.
5. Turn on the computer.
6. The password reset screen automatically displays. Choose either :
F1 to reset CMOS
F4 to reset passwords
The computer executes the choice and automatically shuts down.
7. Disconnect the power cord from the power outlet.
8. Remove the jumper from JP5 pins 1 & 2 and place it on pins 2 & 3 (safe position).
9. Replace the access panel.
10. Reconnect the power cord to the power outlet and turn the computer on.
If F1 was selected in step 6, the CMOS defaults are reset when the computer starts.
If F4 was selected, all passwords are cleared when the computer starts.
NOTE: Clearing CMOS clears the Power-On Password. It does NOT clear the Supervisor Password.
Setting the Supervisor and Power-On Passwords
A. Setting the Supervisor Password provides access protection for the Computer Setup utility.
1. Turn on the computer, then hold down the DEL key until the Computer Setup utility begins.
2. Select “Change Supervisor Password” and follow screen instructions.
3. The password will be enabled after saving settings and exiting the utility.
B. Setting a Power-On Password.
NOTE: A Supervisor Password must have previously been set. That same password will be used for
the Power-On Password.
1. Turn on the computer, then hold down the DEL key until the Computer Setup utility begins.
2. Select Advanced CMOS Setup
➔
Password Check.
3. Select “Always” from the Available Options list.
4. The password will be enabled after saving settings and exiting the utility.
NOTE: Clearing passwords clears both the Supervisor and Power-On Passwords, but does not clear
the “Always” option. To reset only the Supervisor Password, change “Always” to “Setup” on
the Available Options list.
NOTE: Clearing CMOS clears the Power-On Password. It does NOT clear the Supervisor Password.
I/O Map
Address (hex)
Size
Description
0000-000F
16 bytes
DMA controller
0020-0021
2 bytes
Programmable Interrupt Control (PIC)
0040-0043
4 bytes
System timer
0060
1 byte
Keyboard controller byte-reset IRQ
0061
1 byte
System speaker
0064
1 byte
Keyboard controller, CMD/STAT byte
0071-0071
2 bytes
System CMOS/Real Time Clock
0072-0073
2 bytes
System CMOS
0080-008F
16 bytes
DMA controller
0092
1 byte
Fast A20 and PIC
00A0-00A1
2 bytes
PIC
00B2-00B3
2 bytes
APM control
00C0-00D0
32 bytes
DMA
00F0
1 byte
Numeric data processor
0170-0177
8 bytes
Secondary IDE channel
01F0-01F7
8 bytes
Primary IDE channel
One of these ranges:
Can very from
Audio/game port
0200-0207
1 byte to 8 bytes
0208-020F
0210-0217
0218-021F
One of these ranges:
Audio (SoundBlaster Pro+ compatible)
0220-022F
16 bytes
0240-024F
16 bytes
0228-022F*
8 bytes
LPT3
0278-027F*
8 bytes
LPT2
02E8-02EF*
8 bytes
COM4/video (8514A)
02F8-02FF*
8 bytes
COM2
One of these ranges:
8 bytes
MPU-401(MIDI)
0320-0327
0330-0337
0340-0347
0350-0357
0376
1 byte
Secondary IDE Channel command port
0377, bit 6:0
7 bits
Secondary IDE Channel status port
0378-037F
8 bytes
LPT1
0388-038B
6 bytes
AdLib+(FM synthesizer)
03B0-03BB
12 bytes
Intel 82810e-DC100 Graphics/Memory Controller Hub (GMCHE)
03C0-03DF
32 bytes
Intel 82810e Graphics/Memory Controller Hub (GMCHE)
03E8-03EF
8 bytes
COM3
03F0-03F5
6 bytes
Diskette channel 1
03F6
1 byte
Primary IDE channel command port
03F8-03FF
8 bytes
COM1
04D0-04D1
2 bytes
Edge/level triggered PIC
One of these ranges:
8 bytes
Windows Sound System
0530-0537
0E80-0E87
0F40-0F47
LPTn+400h
8 bytes
ECP port, LPTn base 400h
0CF8-0CFB**
4 bytes
PCI configuration address register
0CF9***
1 byte
Turbo and reset control register
0CFC-0CFF
4 bytes
PCI configuration data register
FFA0-FFA7
8 bytes
Primary bus master IDE registers
FFA8-FFAF
8 bytes
Secondary bus master IDE registers
Size and address
Description
96 contiguous bytes starting on a 128-byte divisible boundary
ICH (ACPI+TCO)
64 contiguous bytes starting on a 64-byte divisible boundary
Motherboard resource
64 contiguous bytes starting on a 64-byte divisible boundary
Onboard audio controller
32 contiguous bytes starting on a 32-byte divisible boundary
ICH (USB)
16 contiguous bytes starting on a 16-byte divisible boundary
ICH (SMB)
4096 contiguous bytes starting on a 4096-byte divisible boundary
Intel 82810AA PCI bridge
32 contiguous bytes starting on a 32-byte divisible boundary
Intel 82559 LAN controller
* Default, but can be changed to another address range.
** Dword access only
*** Byte access only
NOTE: Some additional I/O addresses are not available due to ICH addresses aliassing.
DMA
Hardware
DMA
Data Width
System Function
0
8- or 16-bits
Audio
1
8- or 16-bits
Audio/Parallel port
2
8- or 16-bits
Diskette drive
3
8- or 16-bits
Parallel port (for ECP or EPP)/audio
4
DMA controller
5
16-bits
Open
6
16-bits
Open
7
16-bits
Open
System Memory Map
Address Range
Memory Address
Size
Description
1024K–524288K
100000–1FFFFFFF
511MB
Extended memory
960K–1024K
F0000-FFFFF
64KB
Runtime BIOS
896K–960K
E0000-EFFFF
64KB
Reserved
800K–896K
C8000-DFFFF
96KB
Available high DOS memory (open to PCI bus)
640K-800K
A0000-C7FFF
160KB
Video memory and BIOS
639K-640K
9FC00-9FBFF
1KB
Extended BIOS data (movable by memory
manager software)
512K-639K
80000-9FBFF
127KB
Extended conventional memory
0K-512K
00000-7FFFF
512KB
Conventional memory
System Interrupts (IRQ)
IRQ
System Resource
NM1
I/O channel check
0
Reserved, interval timer
1
Reserved, keyboard buffer full
2
Reserved, cascade interrupt from
slave PIC
3
COM2*
(user available if COM2 is not present)
4
COM1*
5
LPT2 (Plug and Play option)/audio/user
available
6
Diskette drive controller
7
LPT1*
*
Default, but can be changed to another IRQ.
IRQ
System Resource
8
Real-time clock
9
User available
10
User available
11
User available
12
Onboard mouse port
(if present, else user available)
13
Reserved, math coprocessor
14
Primary IDE
(if present, else user available)
15
Secondary IDE
(if present, else user available)
J30
Secondary IDE connector
J32
Front panel/Misc header
J34
Primary IDE connector
JP1
Front panel USB (pins 2&3
jumpered = default shipping
configuration)
JP2
Back panel USB (pins 2&3
jumpered = default shipping
configuration)
JP3*
FWH lock (boot block)
JP4*
CPU safe speed
JP5
Clear password/CMOS jumper
* JP3 and JP4 settings should never be altered.
Connectors and Jumpers
BAT1
External battery
DIMM1-2
Memory slots
J9
CD audio
J10
Aux-in connector
J11
Telephony connector
J12
Audio/Modem Riser (AMR) slot
J13-15
PCI Expansion Slots
J17
CPU fan connector
J18
Wake on Lan (WOL)
J19
Processor socket
J23
ATX power connector
J26
Floppy drive connector
