Octek RHINO 6VX User Manual

USER'S MANUAL

RHINO 6VX

Pentium PCI Local Bus Motherboard

Copyright Notice

Copyright 1996 Ocean Office Automation Ltd.
All rights reserved.
Ocean Office Automation Ltd.
5th Floor, Kader Industrial Building,
22 Kai Cheung Road, Kowloon Bay,
Kowloon, Hong Kong.

All of the information contained in this manual is copyrighted and all rights reserved.
No part of this document, in whole or in part, may be reproduced or copied in any
form without prior consent in writing from Ocean Office Automation Ltd..
___________________________________________________________________

Limitations of Liability

While the information in this manual has been carefully reviewed and is believed to
be accurate, Ocean Office Automation Ltd. (Ocean) assumes no responsibility in the
event that any inaccuracies are found. In no event shall Ocean be held liable for any
loss or expenses whether directly or indirectly caused by the support materials
provided with this product. It is further acknowledged that Ocean is under no
obligation to update the manual or to notify purchasers of any forthcoming updates.
___________________________________________________________________

Trademarks

Intel i486, Pentium and Intel are registered trademarks of Intel Corporation.
Octek is a registered trademark of Ocean Office Automation Ltd.
XT, AT, PS/2, OS/2, & IBM are registered trademarks of International Business
Machines Corporation.

All other brand and product names mentioned in this manual are trademarks or
copyrights of their respective holders.
___________________________________________________________________

REVISION 1.4 Aug 1996

Table of Contents

Chapter 1: System Overview

1.1 General Specification Overview........................................

1.2 Central Processing Unit.....................................................

1.3 External Cache Subsystem.................................................

1.4 DRAM Subsystem...........................................................6

1.5 PCI Bus..............................................................................

1.6 Universal Serial Bus.........................................................6

1.7 Super I/O Subsystem..........................................................

1.8 Input/Output Subsystem.....................................................

1.9 BIOS Subsystem..............................................................7

Chapter 2: Installation and Upgrade

2.1 CPU Installation.................................................................

2.2 Fast Page mode / EDO DRAM Installation.......................

2.3 Control of System Speed....................................................

2.4 Reset CMOS..................................................................11

Appendix-A: Connectors Pinout

A.1 Reset Connector (P1)....................................................12

A.2 Turbo LED Connector (P2)...........................................12

A.3 Speaker Connector (P3)................................................12

A.4 Keylock Connector (P4)................................................12

A.5 HD LED Connector (P5)...............................................13

A.6 External Battery Connector (P9)...................................13

A.7 Sleep Switch (P10)........................................................13

A.8 USB Connector (P24)...................................................13

i

A.9 Power Connector (P18,P19)..........................................14

A.10 PS/2 Mouse Connector (P22)........................................14

A.11 Keyboard Connector (KB1)..........................................14

Appendix-B: Hardware Settings

B.1 System Component Map...............................................15

B.2 Layout of RHINO 6VX Main Board.............................16

B.3 Jumper Settings.............................................................17

B.3.1 CPU related settings.......................................17

B.3.2 External cache (L2 cache) setting...................18

B.3.3 Peripheral setup..............................................20

B.3.4 Miscellaneous.................................................20

CHAPTER 1

SYSTEM OVERVIEW

OCTEK RHINO 6VX is a powerful PC machine
offering unparalleled performance. The advanced
external cache system implemented meets the demand
of the most memory-intensive applications today. The
support of Synchronous Cache RAM (pipelined burst
SRAM) and EDO DRAM results in better
performance when compared with traditional
asynchronous SRAM and Fast Page Mode DRAM.
With the Pentium processor and a high bandwidth 32­bit PCI expansion bus, the I/O bottleneck that plagues
most PC systems is now removed.

All of the I/O is integrated inside the mainboard to
further facilitate system installation. The built-in IDE
can support up to 4 fast Enhanced IDE devices
whereas it can also support up to two floppy drives.
The mainboard also includes two serial ports and one
parallel port as the basic configuration for end user.
All that is needed is just a VGA card plugged into a
PCI or ISA slot to complete the whole system.

1

1.1 General Specifications Overview

Processor:

w Processor Type Intel Pentium CPU including

P54C, P54CQS, P54CS,AMD K5
and Cyrix 6x86 CPU.

w External CPU clock 50/55/60/66 MHz

Chipset:

w Motherboard chipset Intel 82430VX
w Super I/O chipset 665/669 super I/O chipset

Cache Architecture:

w Internal Cache 8KB data cache

8KB code cache

w External Cache 256/512KB Synchronous

Pipelined Burst SRAM

Memory Subsystem:

w DRAM SIMM sockets 4 x 72 pin 4MB / 8MB / 16MB /

32MB DRAM modules

w Max. Memory Size 128MB
w DRAM Type Fast Page Mode or EDO DRAM
w Enhancement Mix of Fast Page Mode or EDO

DRAM supported

Input/Output Subsystem

w PCI bus slots 2 x 32-bit PCI Bus slots (3 masters)
w ISA bus slots 3 x 16-bit ISA slots
w shared bus slots 1 x 32 bit PCI bus slot (master) OR 1

x 16-bit ISA slot

w I/O bus speed Up to 33MHz (PCI bus)

2

Integrated IDE, Super I/O Subsystem

w IDE support Chipset built-in PCI IDE support up

to 4 IDE Drives

w On board I/O One Floppy Port supporting 2 floppy

drives of 360KB / 720KB / 1.44MB/

2.88MB capacity.
Two serial ports (16550 Fast UART
compatibles)
One parallel Port (Standard, ECP,
EPP support)

PS/2 Mouse

w PS/2 Mouse Supports PS/2 Mouse through a 1x4

header

Power Management

w Green functions Support various Power Management

schemes
Sleep Switch for power saving

BIOS Subsystem

w BIOS Shadowing Shadow RAM for System and Video

BIOS

w BIOS Features Built-in setup, Power-on self test,

Drive table optimization, User­definable drive types, Password
protection, Shadowing options

Plug & Play / BIOS Update

w Plug & Play BIOS Support Plug & Play for easy

installation

w Flash EEPROM Use Flash EEPROM (1M bits) to

allow easy BIOS update

USB Devices

w USB Devices Interfaced with both host and hub

control functions
2 programmable USB ports

System Support Functions

w System functions 7 DMA channels, 16 level interrupts,

Programmable timers

w Support functions Fast A20 gate and Fast Reset
w Clock Enhanced real time clock/calendar

with battery back-up

Other Features

w Power good On board power good signal

generation

w 3.3V supply On board 3.3V supply to eliminate

the need for special power supply for

3.3V component e.g. CPU, SRAM.
Maximum rating : 30 W.

w Switches Reset, Keylock switches, Sleep

Switch.

w Size 8.5" (W) x 11" (L)

1.2 Central Processing Unit

The Pentium processor is a superscalar, pipelined CPU that
provides next generation performance for the existing PC
compatible software.

The processor is equipped with an 8K code cache and an 8K
data cache . Each cache is organized in a 2-way set-associative
architecture, offering higher hit rates. The data cache can be
configured in write-back or write-through modes.

The internal numeric coprocessor is redesigned to give three
times the performance of the 80486 FPU. It is backward
compatible with i486DX math coprocessor and complying to
ANSI/IEEE standard 754-1985.

1.3 External Cache Subsystem

The external cache of RHINO 6VX is organized in a direct­mapped configuration with sizes of 256KB, or 512KB in
write-back mode using synchronous SRAM (pipelined burst
SRAM).

There are two options to support 256KB SRAM :
(1) 256KB on board (2 pcs of 32Kx32 SRAM).

To support a total of 512KB SRAM, we should have :
(1) 512KB on board (4 pcs of 32Kx32 SRAM).
(2) 256KB on board and 256KB via cache module.

In addition, the presence and size of synchronous SRAM used is
auto-detected by BIOS.

1.4 DRAM Subsystem

The main memory in RHINO 6VX is organized as a 64-bit
memory pool. Both fast-page mode and EDO DRAMs are
supported.

EDO DRAM stands for Extended Data Out DRAM and is
designed to improve the DRAM read performance. EDO
DRAM holds the memory data valid until the next CAS# falling
edge, unlike standard fast page mode DRAM which tri-states
the memory data when CAS# is deasserted to precharge for the
next cycle. As a result, the CAS# precharge can now overlap
with the data valid time to allow CAS# to negate earlier while
still satisfying the memory data valid window time.

In addition, mix of EDO/ Fast Page Mode DRAM could be used
on RHINO 6VX. The presence of EDO/ Fast Page Mode
DRAM is auto-detected by BIOS without any related jumper
setting.

1.5 PCI Bus

The Peripheral Component Interconnect (PCI) local bus was
specified to establish a high performance local bus standard. It
is a 32-bit wide bus supporting burst transactions

The PCI local bus implemented in RHINO 6VX is fully
compliant to v2.1 specification. Up to four PCI bus masters are
supported.

1.6 Universal Serial Bus

The Universal Serial Bus (USB) is a cable bus that supports
data exchange between a host computer and a wide range of
simultaneously accessible peripherals.

1.7 Super I/O Subsystem

To facilitate system implementation, included in RHINO 6VX
are two fast Enhanced IDE ports that can dramatically boost the
system performance if fast IDE drives are used.

Furthermore, various formats floppy drives are also supported
through the floppy connector on board. The motherboard is also
equipped with two serial ports (16550 Fast UART compatibles)
and one parallel port that operates in standard, ECP or EPP
mode.

In addition, RHINO 6VX is designed to support the PS/2 mouse
using specialized keyboard controller and the use of interrupt
IRQ 12. Nevertheless, user can disable the PS/2 mouse function
by means of jumpers.

1.8 Input/Output Subsystem

To allow greater system feasibility, RHINO 6VX has four ISA
bus expansion connectors and three PCI expansion connectors.
One of the expansion slots is shared by connectors that will
accommodate either an ISA or a PCI expansion, but not both at
the same time. Therefore, up to six expansion slots can be
populated on RHINO 6VX . Furthermore, all the PCI slots can
accept PCI bus master cards.

1.9 BIOS Subsystem

RHINO 6VX System BIOS is stored in Flash EEPROM (1 M
bits) which allows easy upgrade through the utility found inside
the diskette shipped with RHINO 6VX.

CHAPTER 2

INSTALLATION AND UPGRADE

2.1 CPU Installation

The CPU is composed of pins that can easily be bent during
installation, causing permanent damage to the processor. It is
therefore very important that you make sure the pins are straight
before installing the CPU onto the SPGA socket located on
RHINO 6VX (refer to layout for exact location). To properly
align the CPU with the socket, align pin 1 of the CPU ( with a
notch at the corner) with pin 1 of the CPU socket as
demonstrated below.

Figure 1 Socket 7 for Pentium CPU

2.2 Fast Page mode / EDO DRAM Installation

There are four SIMM sockets located on the RHINO 6VX
motherboard, marked BANK 1 and BANK 2. BANK 1 and
BANK 2 are counted starting from right to left consecutively.
Start to install the SIMM modules ( IN PAIRS) from either
Bank 1 or Bank 2. Depending on how your memory is
configured, you may not need to use all the memory banks.
Either x32 or x36 of 72 pins SIMM can be installed.

Bank 2 Bank 1

1 1 1 1
11 1

Figure 2 SIMM Sockets Location

Below is a memory configuration table for RHINO 6VX.

BANK 1 BANK 2 Total

-------- -------- 512Kx32 512Kx32 4MB

-------- -------- 1Mx32 1Mx32 8MB

-------- -------- 2Mx32 2Mx32 16MB

-------- -------- 4Mx32 4Mx32 32MB

-------- -------- 8Mx32 8Mx32 64MB

512Kx32 512Kx32 -------- -------- 4MB

1Mx32 1Mx32 -------- -------- 8MB
2Mx32 2Mx32 -------- -------- 16MB
4Mx32 4Mx32 -------- -------- 32MB
8Mx32 8Mx32 -------- -------- 64MB

512Kx32 512Kx32 512Kx32 512Kx32 8MB

1Mx32 1Mx32 512Kx32 512Kx32 12MB

512Kx32 512Kx32 1Mx32 1Mx32 12MB

1Mx32 1Mx32 1Mx32 1Mx32 16MB
2Mx32 2Mx32 512Kx32 512Kx32 20MB
2Mx32 2Mx32 1Mx32 1Mx32 24MB

512Kx32 512Kx32 2Mx32 2Mx32 20MB

1Mx32 1Mx32 2Mx32 2Mx32 24MB
2Mx32 2Mx32 2Mx32 2Mx32 32MB
4Mx32 4Mx32 512Kx32 512Kx32 36MB
4Mx32 4Mx32 1Mx32 1Mx32 40MB
4Mx32 4Mx32 2Mx32 2Mx32 48MB

512Kx32 512Kx32 4Mx32 4Mx32 36MB

1Mx32 1Mx32 4Mx32 4Mx32 40MB
2Mx32 2Mx32 4Mx32 4Mx32 48MB
4Mx32 4Mx32 4Mx32 4Mx32 64MB
8Mx32 8Mx32 512Kx32 512Kx32 68MB
8Mx32 8Mx32 1Mx32 1Mx32 72MB
8Mx32 8Mx32 2Mx32 2Mx32 80MB
8Mx32 8Mx32 4Mx32 4Mx32 96MB

512Kx32 512Kx32 8Mx32 8Mx32 68MB

1Mx32 1Mx32 8Mx32 8Mx32 72MB
2Mx32 2Mx32 8Mx32 8Mx32 80MB
4Mx32 4Mx32 8Mx32 8Mx32 96MB
8Mx32 8Mx32 8Mx32 8Mx32 128MB

Table 1 Memory Configuration Table

2.3 Control of System Speed

System speed can be controlled by keyboard. To change the
speed by keyboard, use the minus sign (-) and the plus sign (+).
Press <control> + <alt> + <“-”> for slow speed and <control>
+ <alt> + <“+”> for fast speed.

2.4 Reset CMOS

If the setting of the system setup is done improperly, it may
make the system malfunction. If this happens, turn off the
power and set jumper JP7 to 2-3 to clear the internal CMOS
status register. Wait at least 5 seconds to ensure that the CMOS
content has been completely cleared.

Next, set the jumper JP7 back to 1-2 and turn on the power.
The BIOS will find the CMOS status register is reset and will
regard the setup information invalid, so it will prompt you to
correct the information.

APPENDIX-A

CONNECTORS PINOUT

A.1 Reset Connector (P1)

Pin Signal Name

1 Reset
2 Ground

A.2 Turbo LED Connector (P2)

Pin Signal Name

1 Pull_Up_150
2 LED_Turbo-

A.3 Speaker Connector (P3)

Pin Signal Name

1 Speaker Data_Out
2 N.C.
3 Ground
4 +5Vdc

A.4 Keylock Connector (P4)

Pin Signal Name

1 +5Vdc
2 Mechanical Key
3 Ground
4 Keyboard Inhibit
5 Ground

A.5 HD LED Connector (P5)

Pin Signal Name

1 Pull_Up_330
2 HD_LED­3 HD_LED­4 Pull_Up_330

A.6 External Battery Connector (P9)

Pin Signal Name

1 +3.6Vdc
2 N.C.
3 Ground
4 Ground

A.7 Sleep Switch (P10)

Pin Signal Name

1 EPMI
2 Ground

A.8 USB Connector (P24)

Pin Signal Name Pin Signal Name

6 VCC 1 VCC
7 Port 1- 2 Port 0­8 Port 1+ 3 Port 0+
9 Ground 4 Ground

10 NC 5 NC

A.9 Power Connector (P18,P19)

Pin Signal Name

1 Power Good
2 +5Vdc
3 +12Vdc
4 -12V dc
5 Ground
6 Ground
7 Ground
8 Ground

9 -5Vdc
10 +5Vdc
11 +5Vdc
12 +5Vdc

A.10 PS/2 Mouse Connector (P22)

Pin Signal Name

1 +5V dc

2 GND

3 MDATA

4 MCLK

A.11 Keyboard Connector (KB1)

Pin Signal Name

1 Keyboard clock
2 Keyboard data
3 Not used
4 Ground
5 VCC

APPENDIX-B

HARDWARE SETTINGS

B.1 System Component Map

Jumper Connectors Function

P1 Reset
P2 Turbo LED
P3 Speaker
P4 Keylock
P5 IDE LED Connector

P9 External Battery Connector
P10 Sleep Connector
P11 Primary IDE Connector
P12 Secondary IDE Connector
P13 Serial Port 2
P14 Floppy Connector
P15 Printer Port Connector
P17 Serial Port 1
P18 Power Connector
P19 Power Connector
P22 PS/2 Mouse Connector
P24 USB Connector

KB1 Keyboard Connector

B.2 Layout of RHINO 6VX Main Board
B.3 Jumper Settings

All factory settings are marked by * in the following
sections.

B.3.1 CPU related settings

CPU Voltage Core Selection

RHINO 6VX has on board voltage regulators support Intel
Pentium CPU such as P54C, P54CQS, P54CS, Cyrix 6x86 and
AMD K5 CPU. The voltage selection for Core voltage is done
by JP52 as follows :

JP52 CPU Core voltage CPU Type

1-2 3.5V(VRE) Cyrix 6x86, AMD K5

3-4 * 3.3V Intel P54C, P54CQS, P54CS

NOTE : Be careful to select the appropriate Core voltage
for different CPU. Improper Core voltage supplied to CPU
may result in “PERMANENT DAMAGE” to CPU !

CPU Type

JP4 JP5 JP8 JP9 JP10 CPU

Clock

1-2

1-2

2-3

2-3

2-3

1-2

2-3

2-3

1-2

1-2

2-3

2-3
2-3 1-2 1-2 1-2 1-2 55MHz Cyrix 6x86-P133+ (110MHz)
1-2

1-2

1-2

2-3
2-3

1-2

1-2

2-3
2-3

2-3

1-2

2-3
1-2

2-3

1-2

2-3
2-3

1-2

1-2

2-3
1-2

1-2

1-2

2-3
1-2

1-2

1-2

2-3
2-3

1-2

1-2

2-3
1-2

1-2

2-3

1-2
2-3

1-2

2-3

1-2
2-3

2-3

2-3

1-2
1-2

2-3

2-3

1-2
2-3

1-2

2-3

1-2
1-2

1-2

2-3

1-2
1-2

1-2

2-3

1-2

1-2
1-2
1-2

2-3
2-3
2-3
2-3
2-3
2-3
2-3
2-3
2-3
2-3
2-3
2-3
2-3
2-3
2-3

50MHz Intel P54C-75

60MHz Intel P54C-90

66MHz Intel P54C-100

CPU TYPE

Cyrix 6x86-P120+ (100MHz)
AMD K5-PR75

Intel P54C-120
Intel P54C-150
Intel P54C-180
Cyrix 6x86-P150+ (120MHz)
AMD K5-PR90
AMD K5-PR120 (90MHz)
AMD K5-PR150 (120MHz)

Intel P54C-133
Intel P54C-166
Intel P54C-200
Cyrix 6x86-P166+ (133MHz)
AMD K5-PR100
AMD K5-PR133 (100MHz)

B.3.2 External cache (L2 cache) setting

Synchronous SRAM

256K Configuration :

1. 256K cache using on board 256K SRAM

SRAM Location Type Speed Voltage

Tag
SRAM
Data
SRAM

U10 8Kx8 /

32Kx8
U41,
U43

2 pcs 32Kx32

Pipelined

15ns 5V I/O

7ns (Clock

3.3V I/O

to o/p valid)

Burst SRAM

JP16* JP50*

OPEN 2-3

512K Configuration :

1. 512K cache using On board 512K SRAM
(4pcs PB SRAM)

SRAM Location Type Speed Voltage

Tag
SRAM
Data
SRAM

U10 32Kx8 15ns 5V I/O

U40,
U41,
U42,
U43

4 pcs 32Kx32

Pipelined

Burst SRAM

7ns (Clock
to o/p valid)

3.3V I/O

JP16 JP50

2-3 1-2

2. 512K cache using on board 256K and 256K Cache
Module w/o Tag SRAM

SRAM Location Type Speed Voltage

Tag
SRAM
Data
SRAM
(1st
256KB)
Data
RAM
(2nd
256KB)

U10 32Kx8 15ns 5V I/O

U41,
U43

DM1 256K Cache

2 pcs of

32Kx32

pipelined

burst SRAM

Module w/o

Tag

7ns (Clock
to o/p valid)

7ns (Clock
to o/p valid)

3.3V I/O

3.3V I/O

JP16 JP50

2-3 1-2

Note : If 256K Cache Module contains a Tag RAM, U10

need not be installed.

B.3.3 Peripheral setup

PS/2 MOUSE support

JP31 JP32 JP33

Enabled 1-2 * 2-3 * 2-3 *
Disabled 2-3 1-2 1-2

B.3.4 Miscellaneous

Power Good Signal select

JP27

External Power Good 1-2 *
On-board Power Good 2-3

CMOS discharge

JP7

Preserve CMOS 1-2 *
Clear CMOS 2-3

Battery select

JP6

On-board Battery 1-2 *
External Battery 2-3

Reserved Jumpers

JP15 1-2
JP30 1-2