Datatech Enterprises Mini 80386SX Manuel utilisateur

Mini 803863X

20MHz Mainboard

User’s Manual

PPM-2030C

Mini 803863X

20 Hz Mainboard

User’s Manual

Edition 1.01

The PPM-20300. this manual and all illustrations in it are

PPM-20300. this manual and illustrations may not be copied

without the written consent of Datatech EnterprisesCo., Ltd.

Warning

Reconfiguring

NEVER reconfigure the board while the power is

ON.

If you wish to reconfigure the board at any time,

make sure that the power is tumed OFF before

changing any hardware settings such as DlP

switches or jumpers.

N019

-When you see an error message on the screen

after turning the power on, leave the system

switched on for one to two hours to charge the

battery. You can then enter the system con-

figuration.

-Later, leave your system switched on for 10 to

15 hours to completely charge the battery.

-It you leave the system switched off for more

than one month, repeat the steps above.

-It you are using an onboard battery, be sure

pins BATl' and INT (2 and 3) of jumper W13

are shorted when you install your system.

Otherwise, you will have to set up your con-

figuration whenever you turn on your computer.

Checklist

Your PPM-20300 mainboard package contains the

following:

-One PPM-20300 mainboard

-One user’s manual

-One BIOS system setup manual

-One EMS driver diskette

Theifollowing does not apply to any country where such

provrswns are inconsistentwith local law:

Datatechmakes no warrantieswith respect to this documentation

eitherexpress or implied and provides it “as is". This includes but

is not limited to any implied warranties of merchantability and

ﬁtness for aparticular purpose.,Theinformation in this document

is subject to change without notice. Datatech assumes no

responsibility for any errors that may appear in this document.

All brand names are registered trademarks of their respective

companies.

Contents

Introduction ............ ..................... 1)

Features ........................... 2

Board Layout ................................ 3

Dimensions of PPM-2030C .................4

Board Setup ................................. 5

RAM Installation ....................... 5

Jumpers W1 -W6 ....................... 6

512KB Total System Memory .................. 8

640KB Total System Memory .................. 9

1MB Total System Memory ...................10

1.5MB Total System Memory ..................11

2MB Total System Memory ...................12

3MB TotalSystem Memory ...................13

4MB Total System Memory ...................14

5MB Total System Memory ...................15

ROM Installation ..................... 16

Connectors ........................ 17 )

Functions of Panel Indicators and Switches ..........17

CPU Frequency Indicator ....................17

Keylock &Power LED .....................18

Hardware Switch ........................18

Speaker ............................. 19

Turbo LED ........................... 19

Reset .............................. 19

Display AdapterSettings .................. 20

Power Good and Power Fail Detect ............ 20

803868X CPU ...-. ................... 21

Address Pipeline ........................21

Math Coprocessor Installation ............... 22

Connectionto Power Supply ............... 24

Choosing aPower Supply ...................25

Battery Connector ..................... 26

Keyboard Connector .................... 26

4—:-

Software .................................. 27

Shadow RAM Enable ....................27

EMS Driver Setup ..................... 28

Operation .................................. 30

Entering 20MHz Turbo Mode ............... 30

Software Turbo Switch ................... 30

Hardware Turbo Switch .................. 30

Factory Default Settings .................. 31

Technical Information ........... ............. 32

Microprocessor ...................... 32

Protected Virtual Address Mode .............. 32

Real Address Mode .................... 33

System Timers ................... '. .. . 33

System Interrupts ..................... 34

ROM Subsystem ...................... 35

RAM Subsystem ...................... 35

Direct Memory Access ................... 36

DMA Channel ....................... 36

I/O Channel Slots ..................... 38

Math Coprocessor Control ................. 39

Appendix A................. ....... ......... 40

Quick Reference for Jumper Settings ........... 41

Introduction

The PPM-2030C mainboard is compatible with the

PC/AT. This means that virtually all the software avail—

able for the PC/AT can also be run on asystem you

build around the PPM—2030C mainboard.

The PPM-2030C incorporates the Intel 80386SX

which is a32-bit CPU with a16-bit external data bus

and a24-bit external address bus. The 80386SXCPU

brings the high-performance software of the lntel

80386 architecture to midrange systems. It provides

the performance benefits of a32-bit programming

architecture and the cost savings associated with

16-bit hardware systems.

Moreover, the 803868X microprocessor is 100% ob-

ject-code compatible with the 386, 286, and 8086

microprocessors. Therefore, PPM-2030C CPU-

based systems optimize both for performance and

cost. The PPM-2030C can access the world's largest

existing microcomputer software base, including the

growing collection of 32-bit software.

For these reasons, the PPM-2030C mainboard is the

ideal choice for aperson seeking affordable ’386

power.

The clear, well-illustrated instructions in this manual

ensure that even if you are anewcomer to the com-

pUter world, you will have your system installed and

running with aminimum of effort.

Features Board~ Lazout

The PPM-20300 includes the following features:

-|nte| 803868X.20 microprocessor __ 32-bit Below is alayout 0f the PPM-2030C ShOWing the

CPU with a16-bit external data bus and a24- y)Jumpers and some of the connectors. The figure on

bit external address bus ‘the next page gives the dimensions of the board.

-lntel 80387SX—2O coprocessors optional

-Use of C&T’s CS8221 PC/AT-compatible chip ‘‘

set. _W1—-wa ws—i ‘l

w2_wa_ mm J7—

-Switchable between 10MH2 Normal mode and

20MHz Turbo mode by either asoftware switch

or ahardware switch

'Onboard battery backup for CMOS configura-

tion table and real-time clock

-RAM subsystem of 512KB, 640KB, 1MB,

1.5MB, 2MB, 3MB, 4MB and 5MB

-Eight expansion slots —Six 16 bit slots and

two 8bit slots

-Sixteen—level interrupt )J:ahargable

iler

-Seven-channel DMAfor disk and special l/O I

-64KB legal DTK BIOS (ADL certified) :' ___-_ __ll __-:, 05%;?"

developed by Datatech Enterprises Co., Ltd. {

-Four-layermainboard “—m 'l ‘l E—w12 '3

-LlM 4.0 EMS support _i‘

we mw“ w”

-Shadow RAM support J2—-.‘J3 PM,

-Choice of either 44256 DIP or 256K/1M SIMM i“_

°° ° ‘g‘ﬂ -J‘ Si‘E’J’i"

DRAM modules with 80ns i

-Page/Interleaved DRAM access method sup—

port

-Power fail detect circuit Figure: The Location of Jumpers and Connectors

-Address pipeline support

Dimensions of PPM-20300

All the dimensions are in millimeter(s).

Board Setup

In this section references will be made to jumper

settings used to configure the variousfunctionsof the

PPM-20300 mainboard. Refer to the Board Layout

section for locations of all jumpers.

RAM Installation

Jumpers W1- W6 are used to set the RAM size you

want on the mainboard. The DIP and SIMM DRAM

banks can containfrom 512KB, 640KB, 1MB, 1.5MB,

2MB, 3MB, 4MB to 5MB by means of setting jumpers

W1 -W6. Reterto the illustration below torthe location

of jumpers W1 —W6 and the RAM banks.

JIllltlllllllllllllllllltllllll"

$1".ng r. Bantu/2

lIEEI EEEIJ DEED

lBank 0II Bank 1I

WIHHIlullIIHIIIIIIHHIIIIIVJ

wlllllllllllllllllllll _IIIII a4 ’~Bank 1/3

111111111111111

111

111 1111

TI11111HH1111111 1111

1111111 111111 111

11 111

111

IIIIIH lmm m

m In In-

___W

___- -I

-”E__

Figure: RAM Banks &Jumpers for Bank

Selection

The following figures show the configuration for total

onboard system memory.

Description

W1 -W6

Settings

Using one bank or two banks (banks 0&1) with

either DlP or SlMM DRAMs as onboard memory —> -

Using three or tour banks of DIP (banks 0, 1) and

SIMM (banks 2, 3) DRAMs as onboard memory

SysterTnolllﬂmorY Bank 0BagslM 21:; 2Bank a gill; lntgﬁggvo R°f°'°"°°

512K 256K OK OK OK 1Disable Page 8

640K 256K 64K 0K 0K 1Disable Page 9

0Enable

1MB 256K 256K 0K 0K 1Enable Page 10

1Disable

1.5MB 256K 256K 256K OK 1Disable Page 11

0Enable

2MB 256K 256K 256K 256K 1Enable Page 12

1Disable

2MB 1M 0K 0K 0K 1Disable Page 12

3MB 256K 256K 1M 0K 1Disable Page 13

0 Enable

4MB 1M 1M 0K 0K 1Enable page 14

1Disable

0Enable

5MB 256K 256K 1M 1M 1Enable Page 15

1Disable

RAM access time is 80ns

Note: To function normally, your system has to be in

Normal Mode but not Turbo mode, if your system is

operating in both zero wait-state and disabled page

interleave mode.

Million Instruction Per secondTest

The Million Instruction Per Second (MIPS) perfor-

mance test —for page-interleave/zero—wait is in 2.45

and for Turbo mode/one—wait is 2.23.

<~e.—

.z,

.w,

Chip Insertion

Rememberthat when inserting chips, you must make

sure the notched or dotted end of the chip is lined up

wrth the notched end of the socket. Gently push the

chip into the socket, and be careful not to bend the

pins.

Jumper

Ajumper is akind of switch which uses aplastic cap

with ametal interior to connect (short) two pins. It a

jumper needs to be left open, you should save the cap

for future use by covering one pin only of the jumper.

This has no effect on the function of the board while it

keeps the cap handy. The illustration below shows the

side and top views of athree-pinjumper in which pins

two and three are shorted.

Side View Top View

To select the proper jumper setting for the RAM size

that you want, refer to the figures on the following

pages.

512KB Total Onboard System Memory

Bank 0=41256 RAM Module x2pieces

°IIIIIIIII

IIIIIII

lllllll

IlIIIIl

or Bank 0=(44256 X4+41256 X2)

Jumpers W1 -W61

You may use either bank as bank 0.

1i» 1

640KB Total Onboard System Memory

Bank 0=41256 FlAM Module x2pieces

__°IIIIIIIII

L‘UIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIG'J

Bank 1=4164 RAM Module x2pieces

°IIIIIIIII°

b‘DIIIIIIIIIIIIIIIIIIIIIIIIIIIIIID'J

llIllllIHIIIIHI

III—IT ”III”

-IIIIII IIIIIII

IIIIIII

or Bank 0=(44256 X4+41256 X2)

Jumpers W1- W6

You may use either bank as bank 0.

1MB Total Onboard System Memory

Bank 0=41256 RAM Module x2pieces

oIIIIIIIII

Bank 1=41256 RAM Module x2pieces

oIIIIIIIII?»

or Bank 1=(44256 X4+41256 X2)

or Bank 0

=(44256 X4+41256 X2)

Jumpers W1- W61

E_ E_ EE

EE EE EE

111

Any bank 0may be used with any bank 1.

1.5MB Total Onboard System Memory

Bank 2=41256 RAM Module x2pieces

°IIIIIIIII°

130

L'T-lllllllIIIIIIIIIIIIIIIIIIIIIIIIDJ

Bank 1=(44256 x4+41256 X2)

Bank 0=

Lullllllllllllllﬁllll lllllllllll ﬂu

(44256 x4+41256 x2)

1Jumpers W1 -W6

0616:

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