Ultra-Low Power Intel486™ SX Processor Evaluation Board Manual February, 1996 Order Number: 272815-001 Ultra-Low Power Intel486 ™ SX Processor Evaluation Board Manual February 1996 Order Number: 272815-001 Information in this document is provided in connection with Intel products. Intel assumes no liability whatsoever, including in- fringement of any patent or copyright, for sale and use of Intel products except as provided in Intel’s Terms and Conditions of Sale for such products. Intel retains the right to make changes to these specifications at any time, without notice. Microprocessor products may have minor variations to this specification known as errata. *Other brands and names are the property of their respective owners. Contact your local Intel sales office or your distributor to obtain the latest specifications before placing your product order. Copies of documents which have an ordering number and are referenced in this document, or other Intel literature, may be obtained from: Intel Corporation Literature Sales P.O. Box 7641 Mt. Prospect, IL 60056-7641 or call 1-800-548-4725 COPYRIGHT © INTEL CORPORATION, 1996 CONTENTS CHAPTER 1 ABOUT THIS MANUAL 1.1 CONTENT OVERVIEW ................................................................................................ 1-1 1.2 NOTATION CONVENTIONS ........................................................................................ 1-2 1.3 RELATED DOCUMENTS ............................................................................................. 1-3 1.4 ELECTRONIC SUPPORT SYSTEMS .......................................................................... 1-4 1.4.1 FaxBack Service .......................................................................................................1-4 1.4.2 Bulletin Board System (BBS) ....................................................................................1-4 1.4.3 CompuServe Forums ................................................................................................1-4 1.4.4 World Wide Web .......................................................................................................1-4 1.5 TECHNICAL SUPPORT ............................................................................................... 1-5 CHAPTER 2 GETTING STARTED 2.1 OVERVIEW .................................................................................................................. 2-1 2.2 BEFORE YOU BEGIN .................................................................................................. 2-4 2.3 SETTING UP THE BOARD .......................................................................................... 2-4 2.4 CONFIGURING THE BIOS ........................................................................................... 2-8 2.4.1 Using an IDE Hard Disk Drive ...................................................................................2-8 2.4.2 Using a Floppy Drive .................................................................................................2-9 2.4.3 Using the Resident Flash Array or a PC Card ........................................................2-10 2.4.3.1 Formatting After Booting from a Floppy Drive ...............................................2-10 2.4.3.2 Formatting After Booting from an IDE Hard Disk Drive .................................2-12 2.5 CHANGING THE DEFAULT VGA DRIVERS ............................................................. 2-14 2.6 PROGRAMMING FLASH MEMORY .......................................................................... 2-14 CHAPTER 3 THEORY OF OPERATION 3.1 BLOCK DIAGRAM ........................................................................................................ 3-1 3.2 ULTRA-LOW POWER Intel486™ SX PROCESSOR CIRCUITRY .............................. 3-2 3.2.1 Measuring Processor Current ...................................................................................3-2 3.2.2 In-circuit Emulator Connectors ..................................................................................3-2 3.3 MISCELLANEOUS POWER SIGNALS ........................................................................ 3-3 3.4 PICOPOWER CHIPSET REGISTERS AND OPTIONS ............................................... 3-3 3.4.1 Clock and Reset Interface Signals ............................................................................3-4 3.4.2 Bus Control Interface ................................................................................................3-4 3.4.3 Power Management Features of the PicoPower Chipset .........................................3-4 3.5 MEMORY ...................................................................................................................... 3-5 3.5.1 DRAM SIMM .............................................................................................................3-6 3.5.2 Flash SIMM ...............................................................................................................3-6 3.5.2.1 DRAM Socket Address Scheme .....................................................................3-7 3.5.2.2 Flash SIMM Address Scheme .........................................................................3-7 3.5.3 Resident Flash Array (RFA) ......................................................................................3-8 iii ULP Intel486™ SX PROCESSOR EVALUATION BOARD MANUAL 3.5.4 Flash Boot Device ...................................................................................................3-10 3.5.5 Cyber Quest Flash Loader Utilities .........................................................................3-10 3.6 VIDEO CONTROLLER ............................................................................................... 3-13 3.7 SERIAL PORTS (COM1, COM2) ................................................................................ 3-13 3.8 PARALLEL PORT ....................................................................................................... 3-15 3.9 INFRARED PORT ....................................................................................................... 3-16 3.10 PCMCIA CONTROLLER ............................................................................................ 3-16 3.11 MOUSE/KEYBOARD CONTROLLER ........................................................................ 3-17 3.12 IDE CONTROLLER .................................................................................................... 3-18 3.13 PORT80H OUTPUT DISPLAY ................................................................................... 3-18 3.14 POWER SUPPLY SUPPORT ..................................................................................... 3-19 3.14.1 Real-Time Clock Battery .........................................................................................3-19 3.15 SPEAKER ................................................................................................................... 3-19 3.16 RESET CIRCUITRY ................................................................................................... 3-20 CHAPTER 4 HARDWARE REFERENCE 4.1 SPECIFICATIONS ........................................................................................................ 4-1 4.2 JUMPERS ..................................................................................................................... 4-1 4.2.1 JP1: Flat-Panel Select Jumpers ................................................................................4-3 4.2.2 JP3: HBBF Jumper ...................................................................................................4-4 4.2.3 JP4 & JP8: Setting Processor Core Voltage Jumpers ..............................................4-5 4.2.4 JP5: Clock Speed Jumpers .......................................................................................4-6 4.2.5 JP6: Force Update Jumper .......................................................................................4-7 4.2.6 JP7: 5 V Power Jumper ............................................................................................4-7 4.2.7 JP9: Power Supply Jumper .......................................................................................4-7 4.2.8 JP10: Flash Boot Device (FBD) Control Jumper .......................................................4-7 4.2.9 JP11: 12 V Power Jumper ........................................................................................4-8 4.3 CONNECTORS ............................................................................................................ 4-9 4.3.1 J1-J4: 40-pin ICE Headers ........................................................................................4-9 4.3.2 J5: Misc Header ......................................................................................................4-13 4.3.3 J6: LCD Connector Header .....................................................................................4-14 4.3.4 J7: Portable Power Connector ................................................................................4-15 4.3.5 J8: IDE Connector ...................................................................................................4-16 4.3.6 J9: PC Power Connector ........................................................................................4-17 4.3.7 J10: 26-pin LPT1 Header ........................................................................................4-18 4.3.8 J11: Infrared Header ...............................................................................................4-19