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Pentium is a registered trademark of Intel, Incorporated. All other marks are the property of their respective companies. NOTICE No part of this document may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language or computer language, in any form or by any means, electronic, mechanical, magnetic, optical, chemical, manual, or otherwise, without prior written permission from Ampro Computers, Incorporated. DISCLAIMER Ampro Computers, Incorporated makes no representations or warranties with respect to the contents of this manual or of the associated Ampro products, and specifically disclaims any implied warranties of merchantability or fitness for any particular purpose. Ampro shall under no circumstances be liable for incidental or consequential damages or related expenses resulting from the use of this product, even if it has been notified of the possibility of such damages. Ampro reserves the right to revise this publication from time to time without obligation to notify any person of such revisions. If errors are found, please contact Ampro at the address listed on the title page of this document. REVISION HISTORY Revision Reason for Change Date 1/A Pre-Production Release 11/98 B Production Release 5/99 C Errata Update 08/00 Little Board/P5x Technical Manual 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/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 ............................................................