A74081-A_AMPRO_Little_Board_PC_Technical_Manual_1990.pdf

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SINGLE
BOARD
4U
SYSTEMS
Little Board
lPC
lM
Technical Manual
PIN:
A74081
Revision:
A
Ampro Computers, Incorporated
990 Almanor Avenue. Sunnyvale, CA 94086
Tel (408) 522-2100 • FAX (408) 720-1305
.
NOTICE
DISCLAIMER
Ampro Computers, Incorporated makes no representations or wan'anties with respect to the
contents 01 this manual and specifically disclaims
any
implkd warranties 01 merchantability or
fitness lor
any
particuJar
purpose. Ampro shall under no circumstances ·be
liable
lor incidental
or consequential damages or related expenses resulting
from
the
use 01 this product, even il
it
has
been notifkdol the possibility 01 such damages. Ampro reserves
the
right to revise this publica-
tion from time to time without obligation to notify any person 01 such revisions. II e"ors are
lound, please contact Ampro at the address listed on
the
tiIJe
page
01
this
document.
TRADEMARKS
Little Board, StackPlane, MiniModule, MiniBac/cplane:
Ampro Computers, Inc.
dBASE:
Ashton-Tate
Hercules:
Hercules Computer Technology
IBM,
XT,
AT:
International Business Machines Corporation
LOTUS
1-2-3:
Lotus
Development
Corp.
MS-Dos,
Flight Simulator:
Microsoft Corp.
DR
DOS: Digital Research, Inc.
COPYRIGHT 1990 AMPRO COMPUTERS INCORPORATED
No part 01 this document may be reproduced, transmitted, transcribed, stored
in
a retrieval
system, or translated into any language or computer language,
in
any lorm or by any means,
electronic, mechanical, magnetic,
optica~
chemical, manual, or otherwise, without the prior
written permission 01 Ampro Computers, Incorporated.
iii
PREFACE
... This
manual
is
for ·integrators and..programme.uof
~ystems-based
entbe-Ampr.a--bittle
Board/PC single board computer.
It
contains information on hardware requirements and
interconnection, and
details
of how to program the system. There are five chapters, organ-
ized
as follows:
•
Chapter 1 Introduction -- General information pertaining to the Little Board/PC, its
major features,
and
a brief functional description.
Chapter 2 Hardware Configuration - Descriptions of the external components neces-
saxy
to construct systems based on the Little Board/PC with floppy and hard disk drives.
Included are tables listing the pin outs of each of the board's connectors, board jumper
conftgUI'ation, and considerations
and
specifications concerning peripheral devices.
Chapter 3 - Software Configuration
An
overview of the system features, conftgUI'ation
options, and utilities that are available under the "DOS" (PC-DOS, MS-DOS, or DR-
DOS) operating system, including system setup guidelines.
Chapter 4
1beory
of Operation -- Detailed
technical
information on Little Board/PC
hardware.
Chapter 5 Programmers' Reference -- Port addresses and other programming consider-
ations for custom programming of the Little Board/PC, including information pertain-
ing
to use of the Ampro SCSI/BIOS.
•
•
•
•
iv
CONTENTS
CHAPTER 1 -INTRODUCTION
1.1 General Description .......................................................................................................1-1
1.2 Little BoardlPC Feaqu-es ..............................................................................................1-2
1.3 Little BoardlPC
S~cifications
..................................................................................... 1-2
CHAPTER 2 - HARDWARE CONFIGURATION
2.1 Introduction .....................................................................................................................2-1
2.1.1
Interface Connectors......................................................................................2-1
2.1.2
Jumper Options ..............................................................................................2-3
2.2 DC Power Input - Jl .......................................................................................................2-4
2.3 Onboard Options ............................................................................................................2-5
2.3.1
DRAM Memory .............................................................................................2-5
2.3.2
Math Coprocessor (JI0) ................................................................................2-6
2.3.3
Byte-Wide Memory Sockets..........................................................................2-7
2.3.4
Battery-Backed Clock Module......................................................................2-9
2.3.5
Video Display Mode Jumpering...................................................................2-9
2.3.6
I/O Wait State Option ...................................................................................2-10
2.4 Peripheral Interface ConfJgUration
and
Connections ................................................2-10
2.4.1
Utility Connector - J4.....................................................................................2-10
2.4.2
Keyboard - J5 ..................................................................................................2-12
2.4.3
Parallel Printer Port - J6................................................................................2-12
2.4.4
PC Compatible Serial Port - J3 ....................................................................2-14
2.4.5
V40 Serial Port - J2 ........................................................................................2-15
2.4.6
Floppy Disk Interface - J8 .............................................................................2-16
2.5
SCSI Interface - 17 ..........................................................................................................2-21
2.5.1
Normal Use of SCSI.......................................................................................2-22
2.5.2
The Ampro SCSI/BIOS ................................................................................2-22
2.5.3
Simple Bidirectional
1/0 ...............................................................................
2-23
2.5.4
SCSI Interface ConfJgUration. .......................................................................2-23
2.6 PC Expansion Bus - J9 ...................................................................................................2-26
2.6.1
Onboard MiniModule Header
and
Bus Expansion ...................................2-26
2.6.2
Using Standard PC
and
AT Bus Cards .......................................................2-27
2.6.3
Expansion Bus Cable Considerations .....................................;....................2-27
2.6.4
Expansion Bus Connector Pinouts ...............................................................2-28
CHAPTER 3 - SOFTWARE CONFIGURATION
3.1 Introduction ............................................................................;........................................3-1
3.1.1
Conventions .....................................................................................................3-1
3.2 Operation with DOS .......................................................................................................3-2
3.2.1
ConfJgUration Options ...................................................................................3-3
3.2.2
Little Board/PC Utilities Overview .............................................................3-3
3.3 Wait State (CPU Speed) Initialization.........................................................................3-4
3.4 Using a Parallel Printer ..................................................................................................3-4
3.5 Using
the
PC Compauble Serial Port ..........................................................................3-5
3.5.1
Serial Port Initialization.................................................................................3-5
3.5.2
Using a Serial Printer....................................................................................
.3-6
3.5.3
Using a Serial Modem ..................................................................................
.3-6
3.6 Using the Non-standard V40 Serial Port .....................................................................3-7
3.6.1
Serial Console Option ....................................................................................3-7
3.6.2
Serial Printer Option......................................................................................3-7
v

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