P2-112AP2-112A
P2-112A
P2-112AP2-112A
®®
®
A PentiumA Pentium
A Pentium
A PentiumA Pentium
Slot1 Processor based AGPSlot1 Processor based AGP
Slot1 Processor based AGP
Slot1 Processor based AGPSlot1 Processor based AGP
motherboard (100/66MHz)
TRADEMARK
All products and company names are trademarks or
registered trademarks of their respective holders.
These specifications are subject to change without
notice.
®®
II or Deschutes II or Deschutes
II or Deschutes
II or Deschutes II or Deschutes
Manual Revision 3.2
SEP 30, 1998
P2-112A Features:
FeaturesP2-112A
FEATURES
• P2-112A is based on the Pentium
at 233 ~ 333MHz (66MHz) or 300 ~ 550MHz (100MHz) on Slot 1. The board
is configured by ESDJ to match your CPU clock speed.
®
II or Deschutes Processor operating
• Designed with VIA APOLLO PRO AGPset.
• Supports up to 384 Mega of DRAM (minimum of 16 MB) on board, You can
use 168-pin DIMM x 3. It will automatically detect Extended Data Output
(EDO) DRAM at 66MHz only or Synchronous DRAM memory (SDRAM) at
66MHz or 100MHz (please see Section 3-2).
• P2-112A will support Error Checking and Correcting (ECC) when using
paritys DRAM memory modules. This will detect multiple bit errors and
correct 1-bit memory errors.
• Supports (2) 16 bit ISA slots, (5) 32 bit PCI slots, (1) AGP slot and provides
(2) independent high performance PCI IDE interfaces capable of supporting
PIO Mode 3/4 and Ultra DMA 33 devices. The P2-112A supports (2)
PCI Bus Master slots and a jumperless PCI INT# control scheme which
reduces configuration confusion when plugging in PCI card(s).
• Supports ATAPI (e.g. CD-ROM) devices on both Primary and Secondary IDE
interfaces.
• Designed with Winbond W83877TF Multi I/O: (1) floppy port, (1) parallel port
(EPP, ECP), and (2) serial ports (16550 Fast UART).
Note: Japanese “Floppy 3 mode” is also supported
• Includes a PS/2 mouse connector.
• Allows use of a PS/2 keyboard.
• Features Award Plug & Play BIOS. With Flash Memory you can always
upgrade to the current BIOS as they are released. (http://www.
please visit our Technical Support section for the latest updates)
2themax.com
Page 1
FeaturesP2-112A
•P2-112A utilizes a Lithium battery which provides environmental protection and
longer battery life.
•Supports the Universal Serial Bus (USB) connector. The onboard VT82C596
chip provides the means for connecting PC peripherals such as; keyboards,
joysticks, telephones, and modems.
•Built-in ATX 20-pin power supply connector.
•Software power-down when using Windows
®
95/98.
•Supports ring-in feature (remote power-on through external modem,
allows system to be turned on remotely.
•Resume by Alarm - Allows your system to turn on at a preselected time.
•Supports CPU Hardware sleep and SMM (System Management Mode).
•Supports Keyboard power ON function (KBPO).
•Supports USDM software to offer motherboard various status.
•Supports the CPU, PWR and Chassis fan Auto stop in sleep mode.
•Built-in WOL (Wake On LAN) Connector.
• Built-in SB-LINK Header for Creative Blaster® A WE64D PCI Bus Sound
Card.
Page 2
Installation P2-112A
P2-112A Detailed Layout
PS/2
USB
USB 1
(Top)
USB 0
(Bottom)
COM 1COM 2COM 2
Parallel Port
Winbond
83877
I/Oset
Mouse
(Top)
Keyboard
(Bottom)
Flash M emory
for BIOS
JP4
CPU Cartridge SLOT 1
AGP SLOT
PCI Slot #1
PCI Slot #2
PCI Slot #3
J7:WOL
PCI Slot #4
PCI Slot #5
ISA Slot #1
ISA Slot #2
CPU FAN
POWER
FAN
J5
J4
Bank 2
Bank 0
Bank 1
JP5
ATX Power Input
DIMM 3
DIMM 2
FDD1
DIMM 1
Secondary IDE
IDE1
IDE2
J2
J3
+
+
1
Battery
Multiplier X Bu s CLOCK
KEYLOCK
SPK
RESET
IR CONN.
J6
CHASSIS FAN
JP3
26 25
112MHz
103MHz
100MHz
83MHz
75MHz
66MHz
AUTO
5.5X
5X
4.5X
4X
3.5X
3X
2 1
J8
SB_Link
POWER_ON
JP1
Page 3
Figure 1
InstallationP2-112A
Easy Installation Procedure
Easy Installation Procedure
The following must be completed before powering on your new system:
Configure Jumpers to match your hardware
Install memory chips
Device Connectors
Configure DIP Switch
P2-112A designs this motherboard with an ESDJ to make your installation fast and
easier.
The following will describe all of the ESDJ that you are required to set before moving
on to step 3-2.
Note: The ESDJ as depicted as shown (Figure 1) in their correct physical
orientation.
JP1 Clear CMOS
1-2 : Run Mode (default)
2-3 : Clear C MO S
JP4 Keyboard Power on Selection
1-2 : Disabled (default)
2-3 : Enabled
Page 4
Installation P2-112A
System Memory Configuration
Memory Layout
The P2-112A supports (3) 168-pin DIMMs (Dual In-line Memory Module). The
DIMMs can be either EDO (Enhanced Data Out) or SDRAM (Synchronized
DRAM).
• DIMM SDRAM may be 83MHz (12ns), 100MHz (10ns) or
120MHz (8ns) bus speed.
• When using Synchronous DRAM we recommend using the
4 clock variety over the 2 clock.
Figure 2 and T able 1 show several possible memory configurations using both
SDRAM and EDO memory.
DIMM 1
DIMM 2
DIMM 3
JP5 SDRAM CLOCK Selection
1-2 : SDRA M= CP U (D efault)
2-3 : SD R AM = A G P (2/3 CP U CLO C K )
Page 5
Bank 0
Bank 1
Bank 2
InstallationP2-112A
yromeMlatoT
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BM483=
mumixaM
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*MARDS/ODE
,BM23,BM61,BM8
1XBM821,BM46
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,BM23,BM61,BM8
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*MARDS/ODE
,BM23,BM61,BM8
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enoNenoN
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*MARDS/ODE
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*MARDS/ODE
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Page 6
InstallationP2-112A
Device Connectors
Please install the motherboard into the chassis.
Now that your motherboard is installed you are ready to connect all your connections
(figure 12).
PS/2 Mouse
(T op)
PS/2 Keyboard
(Bottom)
USB 1
(T op)
USB 0
(Bottom)
Com1 Com2
(Bottom Left) (Bottom Right)
Figure 12
J2:Keylock, Speaker, Reset
J3:IR Conn. TB-LED, HDD-LED, POWER_ON
J4:CPU Fan Power
• A plug-in for the CPU Fan Power
J5:POWER Supply FAN POWER
• A plug-in for Power Supply Fan
J6:Chassis Fan Power
• A Plug-in for the chassis Fan Power
J7:WOL (Wake on
LAN) Connector
J8: SB_Link Header
IDE1: Primary IDE
Parallel Port
(T op)
IDE2: Secondary IDE
FDD1: Floppy Controller
Page 7
InstallationP2-112A
Device Connectors (continued)
J2
J3
1
1
1
KeyLock - Keyboard lock switch & Power LED connector
1. Power LED(+) 4. Keylock
2. N/C 5. GND
3. GND
Speaker - Connect to the system's speaker for beeping
1. Speaker 3. GND
2. N/C 4. GND
Reset - Closed to restart system.
IR Connector
1. VCC 4. GND
2. NC 5. IRTX
3. IRRX
Page 8
IDE LED indicator - LED ON when Onboard PCI IDE Hard disks is
+
activate
Turbo LED indicator - LED ON when higher speed is selected
+
Power On/Off - This is connected to the power button on the case.
Using the Soft-Off by Pwr-BTTN feature, you can choose either
Instant Off (turns system off
hold the button down for 4 seconds before the system turns off). When
the system is in 4 sec delay mode, P2-112A has added a special feature
to make the system go into suspend mode when the button is pressed
momentarily.
immediately), or 4 sec delay (you need to
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