Little Board/P5x Technical Manual
iii
Table of ContentsPreface
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/P5x 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