Specifications

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 V 40 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 V 40 Serial Port ..................................................................... 3-7
3.6.1 Serial Console Option .................................................................................... 3-7
3.6.2 Serial Printer Option ...................................................................................... 3-7
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