Computer Hardware User Manual

Little Board/P5
x
Technical Manual
iii
Table of Contents
Preface
Introduction ..........................................................................................................................................vi
Technical Support.................................................................................................................................vi
Introduction
General Description...........................................................................................................................1–1
Enhanced Reliability..........................................................................................................................1–5
Software .............................................................................................................................................1–6
Designing Little Board Systems ........................................................................................................1–6
On-board MiniModule Expansion................................................................................................1–6
Using Standard PC and AT Bus Cards........................................................................................1–7
Little Board Development Platform And Quick Start Kit...........................................................1–7
Little Board/P5
x
Utility I/O Development Board ........................................................................1–8
Connector Descriptions................................................................................................................1–9
Switch Descriptions (S1 – S4)....................................................................................................1–10
Product Reference
Overview ............................................................................................................................................2–1
Mounting Dimensions........................................................................................................................2–2
Connector Summary ..........................................................................................................................2–3
Jumper Summary ..............................................................................................................................2–7
DC Power ...........................................................................................................................................2–8
Power Requirements....................................................................................................................2–8
Powerfail NMI..............................................................................................................................2–9
Backup Battery ............................................................................................................................2–9
Cooling Requirements..................................................................................................................2–9
System Memory................................................................................................................................2–11
ROM BIOS .................................................................................................................................2–11
Shadowing..................................................................................................................................2–11
BIOS Recovery ...........................................................................................................................2–12
Interrupt and DMA Channel Usage ..........................................................................................2–12
Battery-Backed Clock ......................................................................................................................2–15
Serial Ports ......................................................................................................................................2–15
I/O Addresses and Interrupt Assignments ................................................................................2–15
ROM-BIOS Installation of the Serial Ports...............................................................................2–16
Serial Port Connectors (J11, J13)..............................................................................................2–16
RS-485 Option............................................................................................................................2–17
Serial TTL Option ......................................................................................................................2–18
Ampro Custom Serial Features .................................................................................................2–19
Serial Console Features.............................................................................................................2–19