Specifications

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TABLE OF CONTENTS
CHAPTER 1—INTRODUCTION
1.1 General Description ............................................................................................................... 1–1
1.2 Features ................................................................................................................................. 1–1
1.2.1 Enhanced Reliability.............................................................................................. 1–4
1.3 Software ................................................................................................................................ 1–5
1.4 Designing Little Board Systems............................................................................................. 1–5
1.4.1 Little Board Development Chassis ......................................................................... 1–6
1.5 Little Board/P5i Specifications .............................................................................................. 1–6
1.5.1 CPU/Motherboard..................................................................................................1–6
1.5.2 Embedded-PC System Enhancements..................................................................... 1–6
1.5.3 Onboard Peripherals ..............................................................................................1–7
1.5.4 Support Software ................................................................................................... 1–9
1.5.5 Mechanical and Environmental Specifications ....................................................... 1–10
CHAPTER 2—HARDWARE CONFIGURATION
2.1 Introduction........................................................................................................................... 2–1
2.1.1 Interface Connector Summary................................................................................ 2–1
2.1.2 Connectors............................................................................................................. 2–4
2.1.3 Jumper Configuration Options ............................................................................... 2–4
2.2 DC Power ............................................................................................................................... 2–6
2.2.1 Power Requirements .............................................................................................. 2–6
2.2.2 Powerfail Options .................................................................................................. 2–7
2.2.3 Backup Battery ...................................................................................................... 2–7
2.2.4 Cooling Requirements............................................................................................ 2–8
2.3 DRAM................................................................................................................................... 2–9
2.3.1 Shadowing............................................................................................................. 2–9
2.3.2 Expanded Memory and Extended Memory............................................................. 2–9
2.4 Math Coprocessor.................................................................................................................. 2–10
2.5 Serial Ports ............................................................................................................................ 2–10
2.5.1 I/O Addresses ........................................................................................................ 2–10
2.5.2 Interrupt Assignments............................................................................................ 2–10
2.5.3 ROM-BIOS Installation of the Serial Ports ............................................................ 2–11
2.5.4 Serial Port Connectors (J11, J13)........................................................................... 2–11
2.5.5 Serial Console........................................................................................................ 2–13
2.5.6 Serial Downloader ................................................................................................. 2–13
2.6 Multimode Parallel Port......................................................................................................... 2–13
2.6.1 I/O Addresses ........................................................................................................ 2–13
2.6.2 ROM-BIOS Installation of Parallel Ports ............................................................... 2–14
2.6.3 Interrupts ............................................................................................................... 2–14
2.6.4 DMA Channels ......................................................................................................2–14
2.6.5 Parallel Port Connector (J15) ................................................................................. 2–14
2.7 Floppy Disk Interface ............................................................................................................ 2–17
2.7.1 Floppy Drive Considerations.................................................................................. 2–17
2.7.2 Floppy Interface Configuration .............................................................................. 2–17
2.7.3 Floppy Interface Connector (J14)........................................................................... 2–18
2.8 EIDE Hard Disk Interface...................................................................................................... 2–19