TYAN TEMPEST II User manual

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1. Introduction
1.1 Preface
S1462 is a Dual Intel Pentium based PC/AT mainboard. With 75MHz thru
166MHz CPU, PCI local bus, EISA bus, it can be used with the fastest PC/
AT systems.
1.2 Key Features
* Single or Dual Pentium based PC/AT compatible mainboard with Intel
Neptune chipset
* 4 Master/Slave PCI Bus slots, 5 EISA Bus slots (4 master).
* Supports Single or Dual Pentium Processors (75MHz thru 166MHz).
* Supports true 64 bits CACHE and DRAM access mode.
* Supports WHITE ZIF Socket 5 socket.
* Supports 256/512 KB 2nd level cache memory, either synchronous or
standard SRAM.
* CPU WRITE-BACK cache operation.
* Supports up to 512 MB DRAM memory on board.
* Supports shadow RAM for BIOS & VIDEO BIOS.
* Shadow RAM cachable function to improve performance.
* Licensed AWARD BIOS or AMI BIOS.
* Flash BIOS support
* On-board NCR SCSI (NC810) BIOS firmware
* RTC and 8KB EISA configuration memory
* BABY AT form factor, 6 layers PCB.

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C=Control
D=Data
A=Address
1.3. S1462 Block Diagram
Clock Chip
50/66/60 MHz
Clock Driver
PCICLKA
VESA Slot
LBX
PCI SLot
#1 #2 #3 #4
C D A
DRAM
A
PCICLKB
PCICLKC
PCICLKE
A
D
PCEB
82375EB/SB
ESC
82374EB/SB
LBX
82433NX
EISA Slot
8042
BIOS
#1 #2 #3 #4 #5
Cache
SRAM
256/512 KB
synchronous or
standard SRAM
PCM
82434NX
CPU
Pentium
75-166MHz
C
D
CPU
Pentium
75-166MHz

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1.4 Hardware Specifications
* CPU -Single or Dual 3.3V Pentium 75/90/100 MHz
Processor.
-Single Pentium 120 or 133 MHz Processor
-Two 320 pin SPGA Pentium Overdrive Proces-
sor (Socket 5) White ZIF Sockets on board.
* Coprocessor -Included in Pentium CPU.
* Speed -50/60/66 MHz System Bus and 25/30/33 MHz
PCI Bus speed.
-7.5/8.33 MHz EISA/ISA Bus speed.
-H/W and S/W speed switchable function (Cache
or non Cache).
* DRAM Memory -4 double banks of 72 pins SIMM Module DRAM.
-2MB to 512 MB DRAM size.
-Supports Fast Page DRAM access mode.
* Cache Memory -16 KB cache memory included in Pentium.
-256/512 KB on board 2nd level cache memory.
-Support Pentium BURST read/write mode on
2nd level cache memory access.
-Supports either synchronous or standard
SRAM.
* Shadow RAM -Main BIOS function.
-Video BIOS shadow function programmable.
-Shadow RAM cachable function programmable.
* I/O Bus Slots -4 Master/Slave PCI-Bus.
-5 EISA Bus (4 Masters).
* Dimension -Baby AT size.
1.5. Software Specifications
* BIOS -Licensed AWARD BIOS or AMI BIOS.
-AT CMOS Setup, BIOS/CHIPSET Setup, and
hard disk utility included.
* O.S. -Operates with MS-DOS, Windows, Windows
NT, OS/2, Novell, and SCO Unix.
* Utilities -Licenced AMI EISA configuration utility
-Flash EPROM utility

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1.6 Environment
Ambient Temperature 0 to +50 C (operating)
Relative Humidity 0 to +85% (operating)
Altitude 0 to 10,000 feet (operating)
Vibration 0 to 1,000 Hz
Voltage 4.9 to 5.2 V

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2. Board Installation.
2.1 Unpacking
The mainboard package should contain the following
* The S1462 Mainboard
* User's Manual
* ECU User's Manual
* EISA CFG. Utility Diskette
The mainboard contains sensitive electric components which can be easily
damaged by static electricity, so the mainboard should be left in its original
packing until it is installed.
Unpacking and installation should be done in a grounded anti-static mat.
The operator should be wearing an anti-static wristband, grounded at the
same point as the anti-static mat.
Inspect the main board carton for obvious damages. Shipping and handling
may cause damages to your board. Be sure there are no shipping and
handling damages on the board before proceeding.
After opening the mainboard carton, extract the system board and place it
only on a grounded anti-static surface component side up. Again inspect the
board for damages. Press down on all of the socket IC's to make sure that
they are properly seated. Do this only with the board placed on an anti-
static mat.
DO NOT APPLY POWER TO THE BOARD IF IT HAS BEEN
DAMAGED!
MAKE SURE THAT THE POWER SUPPLY IS CONNECTED
TO THE PROPER 5V CONNECTOR!

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2.2 Installation
You are now ready to install your mainboard. The mounting hole pattern on
the mainboard matches the IBM-AT system board. It is assumed that the
chassis is designed for a standard IBM XT/AT mainboard mounting.
Place the chassis of the anti-static mat and remove the cover. Remove the
plastic clips, Nylon stand-off and screws for mounting the system board,
and keep them separately.

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3. S1462 On Board Resource Setting and Upgrade Guide
3.1 Quick Reference For Jumpers & Connectors (refer Fig. 3.1)
* J21/22: 5V Power Connector
1Power Good Signal
2,10,11,12 VCC (+5V)
3+12V
4-12V
5,6,7,8 GND
9-5V
* J24/J25: 3.3V Power Connector
1,2,3,10,11,12 GND
4,5,6,7,8,9, 3.3V
( J29 needs to be "OFF", if using J24/J25)
* J20: Reset Connector
"Open" for normal operation
"Close" for hardware reset
* J7: Second Level Cache Size Selection (J6 always "on" 1-2)
"Close" pins 1-2 for 512KB cache size
"Close" pins 2-3 for 256KB cache size
* J13: Power LED and Keylock Connector
1LED anode (+)
2NC
3LED cathode (-)
4Keylock
5GND
* J8: Standard or Synchronized SRAM
1-2 Synchronized SRAM
2-3 Standard

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* J19: Speaker Connector
1Data
2NC
3GND
* J16: Turbo Switch Connector
"Open" for high speed
"Close" for low speed (non-cache)
* J17: Turbo LED Connector
1LED cathode (-)
2LED anode (+)
* J9, J10,J2 and J43: System Speed Selection
J9 J10 J2 J43 CPU Speed
off off off off 75MHz
off on off off 90MHz
on on off off 100MHz
off on on off 120MHz
on on on off 133MHz
off on on on 150MHz
on on on on 166MHz
* J41 Single or Dual Processor
1-2 Single Processor
2-3 Dual Processor
In Dual Processor mode
Socket 5 "A" as master
Socket 5 "B" as slave
In Single Processor mode
Use either "A" or "B" Socket 5
*J8 Synchronized or STD SRAM
1-2 Synchronized SRAM
2-3 STD SRAM
.

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EISA Slot 5 EISA Slot 4 EISA Slot 3
EISA Slot 2 EISA Slot 1
PCI Slot 4 PCI Slot 1
Bank 0 Bank 0 Bank 1 Bank 1
Figure 3.1
* All other Jumpers are reserved
PWR CON. 3.3V
RTC
Bank 3 Bank 3 Bank 4 Bank 4
ICChip
82434
NX
ICChip
82433
NX
82433
NX
82374
EB/SB
82375
EB/SB
Synchronized SRAM
Keyboard
CON
Heat
Sink
Socket 5 A Socket 5 B
Clock
Chip
P54C
or
P54CM
P54C
J41
J4
Pin1
PWR CON. 5V
Pin1
BIOS
AMI/AWARD
J18
PCI Slot 3 PCI Slot2
J9
J6
J7
J8
Single or
Dual CPU
J41
Single
Dual 1
Flash
EPROM
J18
12V
5V 1
256 KB
512 KB
1
1
Cache Size
J6
J6
J7
J7
1
1
J10
J43
J11
J2

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3.2 DRAM Installation
The mainboard can be installed with 1/2/4/8/16/32/64 MB 72 pins/70 ns
DRAM SIMM module. The DRAM memory system consists of 4 banks
(0-3). Each bank requires 2 SIMM modules to achieve 64 bit bus transfer
and proper operation. The total memory size can be from 2MB to 512MB.
Various DRAM configurations are shown on the table following this page.
0 0,1 0-2 0-3
2MB*2 (1MB*2) (1MB*2)1MB*2)4MB6MB8MB10MB
2MB*2 (2MB*2) (2MB*2) (2MB*2)4MB8MB12MB16MB
2MB*2 (4MB*2) (4MB*2) (4MB*2)4MB12MB20MB28MB
2MB*2 (8MB*2) (8MB*2) (8MB*2)4MB20MB36MB52MB
2MB*2 (16MB*B) (16MB*2) (16MB*2)4MB36MB68MB100MB
2MB*2 (32MB*2) (32MB*2) (32MB*2)4MB68MB132MB196MB
2MB*2 (64MB*2) (64MB*2) (64MB*2)4MB132MB260MB388MB
1MB*2 (1MB*2) (1MB*2) (1MB*2)2MB4MB6MB8MB
1MB*2 (2MB*2) (2MB*2 (2MB*2)2MB6MB10MB14MB
1MB*2 (4MB*2) (4MB*2)4MB*2)2MB10MB18MB26MB
1MB*2 (8MB*2) (8MB*2) (8MB*2)2MB18MB34MB50MB
1MB*2 (16MB*2) (16MB*2) (16MB*2)2MB34MB66MB98MB
1MB*2 (32MB*2) (32MB*2) (32MB*2)2MB66MB130MB194MB
1MB*2 (64MB*2) (64MB*2) (64MB*2)2MB130MB258MB386MB
BNK0 BNK1 BNK2 BNK3 BK0 BNK BNK BNK
SIMM SIMM SIMM SIMM SIZE SIZE SIZE SIZE