HEADLAND HOT-205B User manual

HOT-2O5B
Headland 286™-16 MainB
User ’ s Manual

HOT-205B
MAIN BOARD
USER ’ S MANUAL
COPYRIGHT 1991.
ALL RIGHTS RESERVED.
MANUAL VERSION 1.00
REGISTERED TRADEMARKS.
IBM,IBM PC,IBM PC/XT,AT AND PC
DOS ARE TRADEMARKS OF INTER -
NATIONAL BUSINESS MACHINES
CORP.
80286 IS A TRADEMARK OF INTEL
CORP.
HEADLAND IS A TRADEMARK OF
HEADLAND TECHNOLOGY INC.

PREFACE
ih is manual is designed to provide the basic informa -
tion necessary for the end users to understand and
properly use the HOT-205B main board. It also con -
tains the information necessary to set up more complex
configurations and/or upgrade a 80286 based system.
We hope that this manual will provide all the infor -
mation that you will need to operate your system. Your
comment and suggestions will help us in our con -
tinuous effort to improve the quality. However should
you require any further information, please contact
your dealer who will be pleased to assist you.

Table of Contents
Chapter 0 Quick Service. ............................ 1
Chapter 1 Introduction ................................ 2
Main Features .............................................. 3
System Performance ................................... 4
Chapter 2 Installation guid e ...................... 5
Installing DIP or SIMM DRAM .............. 5
External Connection ................................... 7
Case Connections ........................................8
Power Supply Connections ........................ 8
Installing an 80287 Coprocessor .............. 9
EMS 4.0 Installation ................................. 11

Chapter 3 Care & Maintenance ..................13
Replacing the External Battery ................ 13
Troubleshooting & Diagnostic ................ 15
Hardware Failures ..................................... 17
Configuration Errors ................................. 20
Compatibility Problem ............................... 21
Occasional Cleaning ................................... 22
Appendix 25
A. TECHNICAL REFERENCE ................ 25
B. The Table of Hard Disk Type ............... 33
C. Quadtel and AMI BIOS SETUP. . . .35
D. Physical layout of HOT-205B

1
CHAPTER O
QUICK SERVICE
QUICK SERVICE
205»
SYMBOL
ASSIGNMENT/FUNCTION
JI
0 ^ 0
ON-BOARD BATTERY
12 3 4
BUM o
COLOR MODE
12 3
JP1
o WW
MONO MODE
12 3
J2
o o
RESET
J3
o o
TURBO LED
J4
o o
TURBO
J5
o o o o
SPEAKER
J6
o o o o o
KEYLOCK

2
r CHAPTER 1
INTRODUCTION
The HOT-205B main board is a high perfor -
mance AT-compatible main board that
provides the simple logic in order to achieve the
advanced personal computer. It is a high per -
formance and high enhanced function board
that offers the primary elements for building
more advance system.
Full downward compatibility is provide with
previous IBM AT and XT models, so all you will
be able to run all your existing MS-DOS com -
patible software but at a greatly faster speed.
In addition you can also run OS/2, UNIX. The
AMI/QUADTEL BIOS used on the HOT-205
provides true compatibility with all
peripherals designed for IBM hardware, and
features an extended setup capability and built
in diagnostics to allow you to easily configure
your system.
INTRODUCTION

3
Main features
The system board offers the following ad -
vanced features:
1. 80286 CPU run at 16 MHz.
2. Headland HT-12 AT single chip.
3.80287 mathematical coprocessor socket on
board.
4. Clock speed 16MHz 0-wait state memory
access.
5. Ture hardware EMS 4.0 implemenation.
6. Maximum 4M memory on board by DIP or
SIP.
7. Shadow RAM support for system and video
BIOS in 128K.
8. 384K remapping in 64K blocks.
9. Supports 1M,256K,64K Bytes DRAM in
mixed mode.
10. Hardware/Software switchable between
lower and turbo mode.
11.8 expansion slots, 5 for 16-bit slot, 3 for 8-
bit .
Í INTRODUCTION

4
12. AMI or QUADTEL ROM BIOS.
13. I/O speed:8MHz.
14. Mechanical: fit any baby AT or XT case.
System performance
SPEED
(MHZ)
POWER METER
MIPS(V.13O)
SI
(V.43)
LANDMARK
(V.1.10) (V.0.99)
16
3.174
17.5
20.3 21
12
2.431
13.7
15.5 15.9
INTRODUCTION

5
CHAPTER 2
INSTALLATION GUIDE
If your 80286-16 M/B is not installed in a com -
puter system ,then the following basic informa -
tion will be useful. Due to the wide variety of
case the HOT-205B can be installed in, it is not
possible to provide exact installing instruc -
tions for every case. This section covers the
common factors for installing the board in
most situations.
Installing DIP or SIP DRAM
Users can use Dual Inline Package (DIP) or
Single Inline Package (SIP). The HOT-205A/B
provides a flexible design for the DRAM types.
You can install DIP 41256,44256, or SIP 41256
, 411000 to the system.
INSTALLATION GUIDE

6
SIZE
BANKO
BANK 1
OK
OK
OK
512K 256K
OK
IM
256K
2S6K
2.5M
256K
IM
2M
IM
OK
4M
IM
IM
DRAM SPEED
80ns
BSTALLATION GUIDE

NOTICE r
When you install DRAM on your HOT-205B
¿ main board, you will notice they are
labeled:Ml,M2,U21,U22,U25 to U28(BANK0).
Í 61- ■ . . ■ 1/ . I'-!..'.. ■■ >6
M3,M4,U23,U24,U29 to U32(BANK 1).
1' ' ■ Ü/ÍW
' -
External connections
Most system cases have some controllers and
indicators built on the front of the case, and
have a speaker mounted somewhere inside .
As mentioned in for connection to the above
indicators. In addtion, the system power supply
leads must be connected to the board.
I INSTALLATION GUIDE

8
Case connections
After installing the HOT-205B main board in
a system case, you can connect the case connec -
tors before closing the case.
If the wire leads from the front panel are not
labelled, you can identify them by tracing the
wire back to see which controller or indicator
is attached to. Refer to the chapter 0 for more
detail information.
Power supply connections
The location of the power supply connectors:
Two connector strips mounted side -by-side.
These actually look as if they are one piece but
INSTALLATION

9
they are not. A system power supply will have
two board leads with six wires each extending
from the supply . These leads, although they
are not often marked, are easy to be distin -
guished. They will be shorter, and have a dif -
ferent connector than the drive power leads
(usually there are four) which have only four
wires.
To connect the power leads , as you plug them
on , orient the two connectors so that the black
wires from each are toward inside, abutting
each other. The connectors will only plug on
this way.
Installing an 80287 coprocessor
If you use certain graph or programming ap -
plications, you may want to install a math
coprocessor to enhance the performance of
your system. Note however ,that your applica -
tion program must be specifically designed to

10
take advantage of the math coprocessor to
benefit from its presence in the system.
To install and configuration the math
coprocessor:
1. Use a 80287 the math coprocessor.
2. Locate the empty socket.
3. Carefully insert the coprocessor making sure
that the notch of the socket connector on the
main board.
If your 80287 comes with a protector , it may be
assembled by folding it into a loop. Then insert
the coprocessor into the safety protector
making sure that the notch in the safety protec -
tor is on the same end as the notch as in the
coprocessor.
The coprocessor is static sensitive . Reduce
static by touching the system frame with one
hand while installing the coprocessor in your
system unit.
INSTALLATION GUIDE

11
EMS 4.0 installation
If you want to use EMS 4.0 function, you must
resetup one time. When your system memory
size is 1MB, you only choose either shadow
RAM or EMS. If you choose EMS, extended
memory of the motherboard have to setup zero,
EMS memory size setup 384MB. When your
system memory size is above 1MB.EMS,
shadow RAM and extended memory may exist
at the same time. For example, if the memory
size is 4MB and EMS is 2MB, then the base
memory will be 640KB, 384KB of shadow RAM
and 1MB of extended memory.
To use the EMS 4.0 function, pls. refer to the
procedure listed below:
If your system have a hard disk (drive C). The
first step you insert utility diskette into drive
A. The second step you copy the
HT12EMM.SYS file driver from your utility
diskette onto your bootable disk drive (drive
C).
íiBTALLATÍOH guide

12
TYPE:
C > A: < Enter >
A > copy A:HT12EMM.SYS C: < Enter >
Adding the following line to your CONFIG.SYS
file on your boot drive:
DEVICE = HT12EMM.SYS
* If your DOS have CONFIG.SYS file, you ma;
used EDEIN command to add original data o
CONFIG.SYS file. EDEIN command ma;
avoid losing original data of CONFIG.SYS file
* If your DOS have not CONFIG.SYS file, yoi
must copy CONFIG.SYS file to DOS.
TYPE:
C > COPY CON CONFIG.SYS < Enter >
DEVICE = HT12EMM.SYS < Enter >
PRESS < CTRL > “ Z ” OR “ F6" KEY< Enter >
INSTALLATION GUIDE

13
Replacing the externa l battery
The battery in the battery pack or the special
battery that the HOT-205B main board uses to
maintain the configuration information in the
on-board CMOS memory will eventually re -
quire replacement . This can be done by your
dealer or any qualifed service personnel . If
you want to replace the battery by your -
self,remember not to void the warranty on your
system when you open your system case .
To replace the battery do as follows:
CARE & MAINTENANCE

14
* Open your system case according to the in -
structions in the system manual. Always
remember to take precautions against static
electric damage and see that all electric devices
are disconnected from the computer and un -
plugged from their power source.
* Unplug the battery connector lead from the
HOT-205B main board.
* No matter your system uses a multiple bat -
tery pack or a single battery design , remove the
exhausted batteries and replace them with a
new ones of the same specification.
* Attach the wire lead from the battery pack or
battery to the battery connector properly such
that the pin 1 wire connects to pin 1 of the
battery connection on the board. Pin 1 of the
battery connector on the HOT-205B main
board is marked on the board.
When you have completed replacing the battery
supply for the CMOS RAM, close your com -
puter case and reassemble your system ac -
cording to the directions in your system
CARE & MAINTENANCE