
Little Board/486iTechnical ManualP/N: 5000941Revision: EAmpro Computers, Incorporated4757 Hellyer Avenue ! San Jose, CA 95138 Tel (408) 360-0200 !
Little Board/486i Technical Manualx
Little Board/486i Technical Manual3–22handshaking signals for increased throughput. Data flow is monitored by a watchdog timer (separatefrom the boar
Software Configuration3–23the port to input only; a 0 sets it to output only. Here is a sample of code for dynamically changing theport direction afte
Little Board/486i Technical Manual3–24Register BitSignal Nameor Function In/OutActiveHigh/LowJ15PinDB25FPinDATA(378h)(278h)01234567Data 0Data 1Data 2D
Software Configuration3–25Register Bit Definitions:SignalName Full Name DescriptionTMOUT Timeout Valid only in EPP mode , this signal goes trueafter a
Little Board/486i Technical Manual3–26IEEE Customer Service445 Hoes LanePO Box 1331Piscataway, NJ 08855-1331 USAPhone: (800) 678-IEEE (in the US and
Software Configuration3–27;----------------------------------------------------------; Page select code for byte-wide sockets;------------------------
Little Board/486i Technical Manual3–283.11.2 Byte-Wide Socket SignalsJumper arrays W14 (for S0), W15 (for S1) configure the byte-wide sockets for spe
Software Configuration3–293.12 SCSI CONTROLLERThe SCSI controller can serve many purposes, including controlling hard disk drives, tape drives, texts
Little Board/486i Technical Manual3–30Typically, SCSI drives come preset to SCSI ID 0, LUN 0. The “SCSI Initiator ID” option sets theCPU board’s SCSI
Software Configuration3–31! Repeater, router, or bridge—Devices that extend the size of a network beyond the limitations ofone segment. These device
1–1CHAPTER 1INTRODUCTION1.1 GENERAL DESCRIPTIONThe Little Board/486i is an exceptionally high integration, high performance 486DX-based PC/ATcompatib
Little Board/486i Technical Manual3–32Modern network architectures are based on the OSI model which defines layers of software between thenetwork hard
Software Configuration3–33standards and recommendations set forth by the controller chip manufacturer. To develop a customdriver, you will need detai
Little Board/486i Technical Manual3–34Contact LanWorks at the following address for information about their “Bootware”:LanWorks Technologies Inc.2425
Software Configuration3–35NoteThe minimum byte-wide socket address window on the LittleBoard/486i is 64K bytes. Any devices smaller than 64K bytes wil
Little Board/486i Technical Manual3–363.14 FLAT PANEL/CRT VIDEO CONTROLLER3.14.1 Developing a Custom BIOS for an Unsupported LCD Flat PanelAmpro sup
Software Configuration3–37A complete description of the PC Video interface is beyond the scope of this manual. To find out moreabout the PC Video inte
Little Board/486i Technical Manual3–38;----------------------------------------------------------; Watchdog timer control program;--------------------
Software Configuration3–39Memory Address Function0100000h - 3FFFFFFh Extended memory00F0000h - 00FFFFFh 64K ROM BIOS.00D0000h - 00EFFFFh Byte-wide mem
Little Board/486i Technical Manual3–40I/O Address Function3F8h - 3FFh Primary serial port3F2h - 3F7h Floppy disk controller ports3F2: FDC Digital out
Software Configuration3–41NoteOther I/O ports below 100h are reserved for internal systemfunctions and should not be accessed.3.20 UTILITY SOFTWARE O
Little Board/486i Technical Manual1–2! Serial loader option—supports loading boot code from an external serial source! EEPROM access function—512 bi
Little Board/486i Technical Manual3–42
A–1APPENDIX AFLAT PANEL CABLESThis section lists the cable wiring for the flat panels supported by the ROM BIOS. Use these lists toconstruct cables f
Little Board/486i Technical ManualA–2A.1 SHARP LM64P839 PASSIVE MONOCHROME LCD PANELLB486iJ3Flat PanelConnectorBacklightInverterPin Signal Pin Signal
Appendix AA–3Notes: Sharp LM64P839 Passive Monochrome LCD Panel1. This wiring list assumes that you have installed Ampro's optional LCD Bias Sup
Little Board/486i Technical ManualA–4A.2 SHARP LJ64ZU51 GRAY SCALE ELECTROLUMINESCENTLB486iJ3Flat PanelConnectorPin Signal Pin Signal1 GND A10 GND2+5
Appendix AA–5Notes: Sharp LJ64ZU51 Gray Scale Electroluminescent1. Power management can be obtained by connecting the panel's Vcc to the LB486i&
Little Board/486i Technical ManualA–6A.3 SHARP LM64C35P DUAL SCAN STN COLORLB486iJ3Adapter BoardQuadranglePCB-LM002-1Backlight InverterPin Signal Pin
Appendix AA–7Notes: Sharp LM64C35P Dual scan STN color1. Power management can be obtained by connecting the panel's Vcc to the LB486i's VD
Little Board/486i Technical ManualA–8A.4 SHARP LQ10D131 TFT COLORLB486iJ3Adapter BoardQuadranglePCB-LQ001-1BacklightInverterPin Signal Pin Signal Pin
Appendix AA–9Notes: Sharp LQ10D131 TFT Color1. Power management can be obtained by connecting the panel's Vcc to the LB486i's VDDSAFE (pin4
Introduction1–3CGA, and MDA. Resolutions up to 1280 x 1024 pixels and up to 16 million colors are supported (refer toTables 1–2 through 1–7 for video
Little Board/486i Technical ManualA–10A.5 SHARP LQ64D142 TFT COLORLB486iJ3Adapter BoardQuadranglePCB-LQ001-1BacklightInverterPin Signal Pin Signal Pi
Appendix AA–11Notes: Sharp LQ64D142 TFT Color1. Power management can be obtained by connecting the panel's Vcc to the LB486i's VDDSAFE(pin
Little Board/486i Technical ManualA–12A.6 FLAT PANEL DISPLAY LDH102TTFT COLORLB486iJ3 LDH102TPin Signal Pin Signal1GND 22 GND2 +5VDC 40, 46, 48, 50 +
Index–1INDEX110BaseT, 2-39228-pin devices, in 32-pin sockets, 2-23AAAN-8702, 2-25AAN-8804, SCSI BIOS, 3-29AAN-8805, EEPROM access, 3-16AAN-9003, 2-25A
Little Board/486i Technical ManualIndex–2Clock, 2-41, 3-3COM port table, 3-20ConfigurationSummary, 2-4Configuration, Byte-wide, 2-25ConnectorAUI Ether
IndexIndex–3Floppy drives, 2-16, 3-3Floppy interface, 2-16, 3-7HHard disk drives, SCSI, 3-12Hard drives, partitioning, 3-17Hot key setup, 3-7II/O map,
Little Board/486i Technical ManualIndex–4NNDIS, 3-32Netware driver, 3-32Network operating systems, 3-31Network terms, 3-30Network trunk, 3-31NMI, 2-7N
IndexIndex–5SCSI drive setup, 3-13SCSI hard disk drives, 3-12SCSI interface, 2-20SCSI utilities, 3-12SCSI-II option, 1-2Security switch, 2-43Segment,
Little Board/486i Technical Manual1–4ISO 9001 Manufacturing. Ampro is a certified ISO 9001 vendor.EMC testing. Knowing that many embedded systems must
Introduction1–5− Onboard programming of 5 V and 12 V Flash EPROMs− Onboard +12 Volt power supply for Flash EPROM programming− Configurable as 64K o
Little Board/486i Technical Manual1–6! SCSI-II Interface− ANSI X3.131-compliant− Uses the Adaptec AIC 6360 controller− Synchronous or asynchronous
Introduction1–7− I/O base address options: 300h, 320h, 360h, or 380h− Interrupt options: IRQ3, IRQ9 (default), IRQ10, IRQ11− DMA: not used− Boot R
Little Board/486i Technical Manual1–8! Operating environment:− Standard: 0° to 70° C (with adequate airflow); Extended temperature range can be test
Introduction1–9Flat Panel DisplaysThe Little Board/486i display controller supports all flat panel display technologies including plasma,electrolumine
WARNINGThe Female PC/104 Bus Headers supplied on this ThirdGeneration Little Board CPU are not compatible withbackplanes and cable adapters
Little Board/486i Technical Manual1–10ResolutionCRTColorsMonoLCDGrayScalesDD STNLCD Colors9-bit TFTLCD ColorVideoMemorySimul-taneousDisplay?320 x 200
Introduction1–11ModeDisplayMode Colors Text Font PixelsClock(MHz)Horiz(KHz)Vert(Hz)0+, 1+ Text 16 40x2540x2540x259x168x148x8360x400320x350320x20028.32
Little Board/486i Technical Manual1–12ModeDisplayMode Colors Text Font PixelsClock(MHz)Horiz(KHz)Vert(Hz)Memory CRT*20 4-bit Linear 16 80x30 8x16 640x
Introduction1–13ModeDisplayMode Colors Text Font PixelsClock(MHz)Horiz(KHz)Vert(Hz)Memory CRT*12** Planar 16 80x30 8x16 640x480 31.500 37.5 75 256K b,
Little Board/486i Technical Manual1–14P1BP1AP2CP2D.200.450.9002.30002.8005.7006.0006.3506.8007.1007.5007.6007.800SIMMHeight(Varies).5500.100.4001.0001
2–1CHAPTER 2HARDWARE CONFIGURATION2.1 INTRODUCTIONThis chapter covers configuring the Little Board/486i and using on-board and peripheral devices. Th
Hardware Configuration2–2Connector Function Size Key PinP1A/B PC/104 Expansion Bus 64-Pin B10P2C/D PC/104 Expansion Bus 40-pin C19J1-J2 Designations n
Hardware Configuration2–3(Shaded connector pins indicate key pins.)Figure 2-1 Connector and Jumper Locations
Hardware Configuration2–4ConnectorsThe I/O connectors are shrouded dual-row headers for use with flat ribbon (IDC) connectors andribbon cable. Ampro r
Hardware Configuration2–5JumperGroup Function DefaultW1 Video Controller Enable ONW2 Byte-wide S0 Battery Back-up Power OFFW3 SCSI Termination Power O
iiiNOTICEDISCLAIMERAmpro Computers, Incorporated makes no representations or warranties with respect to the contents ofthis manual or of the associate
Hardware Configuration2–62.2 DC POWERThe pinout of the power connector J10 is identical with the power connectors on 5-1/4 inch floppydisk drives. Ref
Hardware Configuration2–7programming Flash EPROMs. (There may be a requirement for an external +12 volt supply,depending on what peripherals you conn
Hardware Configuration2–8(To connect the on-board battery to byte-wide socket S0 to back up an SRAM, install jumpers on W2and W21-1/2. If you use ano
Hardware Configuration2–9Figure 2-3 Write-Back Cache Configuration (W10)2.4 DRAMThe board has positions for two 72-pin Single In-line Memory Modules
Hardware Configuration2–10NoteIf you change the amount of memory installed, you must runSETUP again to save the new value in the ConfigurationMemory.2
Hardware Configuration2–11Port I/O Address InterruptSerial 1 3F8h - 3FFh 4Serial 2 2F8h - 2FFh 3Serial 3 3E8h - 3EFh 4 or 12Serial 4 2E8h - 2EFh 3 or
Hardware Configuration2–12serial port and searching to the last one, Serial 4. Thus, for example, if Serial 1 and Serial 3 aredisabled, the ROM-BIOS a
Hardware Configuration2–13Connector Type Mating ConnectorRIBBON 3M 3421-7600DISCRETE WIRE MOLEX HOUSING 22-55-2202PIN 16-02-0103Table 2-8 J11 and J13
Hardware Configuration2–14Selection I/O AddressPrimary 378h - 37FhSecondary 278h - 27FhDisable NoneTable 2-9 Parallel Printer Port Address Configurat
Hardware Configuration2–15Figure 2-7 Parallel Port DMA Selection (W18, W19)If you will not be using DMA with the parallel port, leave the jumpers off
Little Board/486i Technical ManualivPREFACEThis manual is for integrators and programmers of systems based on the Ampro Little Board™/486i singleboard
Hardware Configuration2–16J15PinSignalName Function In/OutDB25Pin135791113151719212325-STROBEData 0Data 1Data 2Data 3Data 4Data 5Data 6Data 7-ACKBUSYP
Hardware Configuration2–17NoteFor maximum reliability, keep the cable between the board andthe device it drives to 10 feet or less in length.The paral
Hardware Configuration2–18! Drive Mounting—If you mount a floppy drive very close to the Little Board or another source ofEMI, you may need to place
Hardware Configuration2–19 Connector Type Mating ConnectorRIBBON 3M 3414-7600DISCRETE WIRE MOLEX HOUSING 22-55-2342PIN 16-02-0103Table 2-14 J14 Matin
Hardware Configuration2–20Pin Signal Name Function In/Out1 -HOST RESET Reset signal from host OUT2 GND Ground OUT3 HOST D7 Data bit 7 I/O4 HOST D8 Dat
Hardware Configuration2–21Pin Signal Name Function In/Out32 RSVD Reserved N/C33 HOST A1 Drive address 1 OUT34 RSVD Reserved N/C35 HOST AD0 Drive addre
Hardware Configuration2–22Pin Signal Function246810121416182632343638404244464850-DB0-DB1-DB2-DB3-DB4-DB5-DB6- DB7-DBPTERM PWR-ATNGROUND-BSY-ACK-RST-M
Hardware Configuration2–23be re-mapped to 140h-15Fh by installing a shunt on W24. The SCSI BIOS extensions of the ROMBIOS do not support the alternat
Hardware Configuration2–24(NOVRAM) devices. Battery backup power can be connected to S0 using a jumper option to make anSRAM “non-volatile.”You can u
Hardware Configuration2–25Figure 2-8 Using 28- and 32- pin Devices in 32-pin Sockets2.11.1 Addressing the Byte-wide SocketsUse the CPU SETUP progra
vTABLE OF CONTENTSCHAPTER 1—INTRODUCTION1.1 General Description ...
Hardware Configuration2–26If devices larger than 64K bytes are installed, you must select which page is visible in the addresswindow assigned to the d
Hardware Configuration2–27to install jumpers for supported memory devices. Table 3-12 describes the byte-wide socket signalsthat correspond to each j
Hardware Configuration2–28EPROM(Typical Devices) Pins Jumper Diagram8K EPROM 27C6416K EPROM 27C1288K EEPROM 28C642832K EPROM 27C256 2864K EPROM 27C512
Hardware Configuration2–292.11.6 Using Flash EPROMsFlash programming power for +12V Flash devices is provided by an on-board power supply. You donot
Hardware Configuration2–30The external battery power is combined with the internal battery using low forward voltage dropSchottky diodes. The 165 mill
Hardware Configuration2–31Name Connector Pins/Type DescriptionFlat Panel J350-pinShrouded.100HeaderProvides connections for a broad array ofstandard f
Hardware Configuration2–32J5 Pin Signal Name DB-15 DB-91Red 112 Ground 6 63 Green 2 24 Ground 7 75Blue 336 Ground 8 87 Horizontal Sync. 13 48 Ground 1
Hardware Configuration2–33The following table lists the signals available on connector J3.J3 PinSignalName Description2, 34, 37 +5V +5 Volt supply fro
Hardware Configuration2–34 Connector Type Mating ConnectorRIBBON 3M 4325-7600DISCRETE WIRE MOLEX HOUSING 22-55-2502PIN 16-02-0103Table 2-25 J3 Mating
Hardware Configuration2–352.12.3 The LCD Bias Supply OptionThe LCD Bias Supply Option is a small circuit board that supplies Vee power to an LCD disp
Little Board/486i Technical Manualvi2.11 Byte-wide Sockets...
Hardware Configuration2–36Figure 2-13 Vee Polarity Selection JumperNoteIncorrect Vee polarity or voltage can damage an LCD panel.Set the polarity and
Hardware Configuration2–37Example:Suppose the following values are shown in the panel’s data sheet:Vee max = 24 VVee min = 20 VCalculate the required
Hardware Configuration2–38J6 Pin Name Function19 VSYNC Vertical Sync (output)21 HSYNC Horizontal Sync (output)29 PCLK Pixel Clock (output)31 KEY Color
Hardware Configuration2–39Table 2-28 J6 Mating Connector2.13 ETHERNET NETWORK INTERFACEThis section describes how to configure and connect the Ether
Hardware Configuration2–40! In SETUP, enable the expansion BIOS ROM at CC000h. (If you do not use a boot PROM, thisoption should be disabled.)! Rem
Hardware Configuration2–41NoteThis is the only Little Board/486i interface that requires anexternal +12V supply.If you use the AUI interface, you must
Hardware Configuration2–422.14 BATTERY-BACKED CLOCKAn AT-compatible battery-backed real-time clock (with CMOS RAM) is standard on theLittle Board/486
Hardware Configuration2–43! Security key switch! Keyboard interface! External back-up batteryTable 2-32 shows the pinout and signal definitions of
Hardware Configuration2–442.16.1 LED ConnectionTo connect an external LED power-on indication lamp, connect the LED anode (-) to J16-5 and thecathode
Hardware Configuration2–452.17 AT EXPANSION BUSThe PC/AT expansion bus appears on a pair of header connectors at P1 and P2. P1 is a 64-pin femaledual
vii3.4.6 Hot Key Setup Enable... 3–73.4.7 Video State ...
Hardware Configuration2–462.17.3 Bus Expansion GuidelinesOne way to expand a Little Board/486i is by connecting short cables to the header connectors
Hardware Configuration2–47CAUTIONDo not use resistive bus termination! If the signal requirestermination, use AC termination only.The actual requirem
Hardware Configuration2–48PinSignalName Function In/Out Current PU/PD/Ser*A1A2A3A4A5A6A7A8A9A10A11A12A13A14A15A16A17A18A19A20A21A22A23A24A25A26A27A28A
Hardware Configuration2–49PinSignalName Function In/Out Current PU/PD/Ser*B1B2B3B4B5B6B7B8B9B10B11B12B13B14B15B16B17B18B19B20B21B22B23B24B25B26B27B28B
Hardware Configuration2–50PinSignalName Function In/Out Current PU/PD/Ser*C0C1C2C3C4C5C6C7C8C9C10C11C12C13C14C15C16C17C18C19GND**-SBHELA23LA22LA21LA20
Hardware Configuration2–51PinSignalName Function In/Out Current PU/PD/Ser*D0D1D2D3D4D5D6D7D8D9D10D11D12D13D14D15D16D17D18D19GND**-MEMCS16-IOCS16IRQ10I
Hardware Configuration2–522.17.5 Interrupt and DMA Channel UsageThe AT bus provides several interrupt and DMA control signals. When you expand the sy
Hardware Configuration2–53 Channel Function0123 Available for 8-bit transfersAvailable for 8-bit transfers(Multimode Parallel port)Floppy controllerAv
Hardware Configuration2–54
3–1CHAPTER 3SOFTWARE CONFIGURATION3.1 INTRODUCTIONThis chapter provides the information you will need to configure your Little Board/486i from a soft
Little Board/486i Technical Manualviii3.19 System I/O Map ...
Little Board/486i Technical Manual3–2Page Menu Name Functions1 Standard (CMOS/EEPROM)ConfigurationSet date and timeDefine floppy drivesDefine IDE hard
Software Configuration3–33.3 SETUP PAGE 1—STANDARD (CMOS) SETUPThe first SETUP page contains the parameters normally saved in CMOS RAM plus some addi
Little Board/486i Technical Manual3–4density floppy drives. That is, you can read and boot from 360K floppies in a 1.2M 5-1/4 inch drive, andfrom 720K
Software Configuration3–5the configuration memory to the new memory size. Until you do this, an error message will appear duringPOST.3.3.6 Error Halt
Little Board/486i Technical Manual3–63.4 SETUP PAGE 2—OPTIONS/PERIPHERAL CONFIGURATIONUse SETUP page 2 to enable or disable many of the functions and
Software Configuration3–7Port AddressSerial 1 3F8h – 3FFhSerial 2 2F8h – 2FFhSerial 3 3E8h – 3EFhSerial 4 2E8h – 2EFhTable 3-2 Serial Port I/O Addres
Little Board/486i Technical Manual3–8;=====================================================================init: mov ah,1chmov al,-1mov bx,414Dhmov cx
Software Configuration3–9You must also set hardware jumpers to configure the byte-wide sockets for the devices you install. Referto Chapter 2 for jump
Little Board/486i Technical Manual3–103.4.15 Flat Panel Display TypeThere are up to 8 pre-installed flat panel video BIOS configurations available fr
Software Configuration3–11is not at the end of the SCSI cable, set this option to Disable and install termination on the appropriateSCSI devices.
ixTable 2-10 Parallel Port Connector (J15) ... 2–16Table 2-11 J6 M
Little Board/486i Technical Manual3–123.5 SETUP PAGE 3—SCSI HARD DISKOne unique feature of the Little Board/486i is that its ROM BIOS contains hard d
Software Configuration3–133.5.1 SCSI Drive Parameter SetupSeveral SCSI drive parameters need to be set in the configuration memory using SETUP.! SCS
Little Board/486i Technical Manual3–143.6 SETUP PAGE 4—SERIAL CONSOLEThe ROM BIOS includes a unique set of features which allow full access to the sy
Software Configuration3–15Console Output Device—Select the console output device, either Video, Serial 1, Serial 2, or None.Console Input Device—Sele
Little Board/486i Technical Manual3–16The supported switches and their meaning are as follows:Switch Function? Display a usage help screenT Set the (h
Software Configuration3–17EMS Option—The Little Board/486i can emulate the Lotus-Intel-Microsoft Expanded MemorySpecification Version 4.0 (LIM EMS 4.0
Little Board/486i Technical Manual3–183.9.2 Sample Code for Interrupt SharingThe following assembly language code is an example of software that supp
Software Configuration3–19 AND AL,1 ;see if data received JZ In2 POP DX POP AX IRET;; *********INTERRUPT INITIALIZATION ROUTINE*********; MOV D
Little Board/486i Technical Manual3–20other serial device for input, and a standard video display for output. Or you can use a standard keyboardwith a
Software Configuration3–21Serial HandshakeThe serial console device data format and the Little Board/486i serial port data format must match for thede
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