IDE Hard Disk Interface, IDE Connector J12 | Ampro Corporation 486E

Product Reference

IDE Hard Disk Interface

The Little Board/486e CPU provides an interface for one or two Integrated Device Electronics (IDE) hard disk drives. IDE drives, the most popular and cost-effective type of hard drive currently available, have an internal hard disk controller. There are also many CD-ROM drives designed to use the IDE interface. If you attach a CD-ROM drive to the IDE port, you need a driver (supplied by the CD-ROM drive manufacturer) to access the device.

IDE Connector (J12)

The IDE interface appears at connector J12 a 40-pin, dual-row connector. Table 2–25 shows the interface signals and pin outs for the IDE interface connector. Table 2–26 shows manufacturer’s part numbers for mating connectors to J12.

Note

For maximum reliability, keep IDE drive cables less than 18 inches long.

2–29

Image 45

Ampro Corporation 486E manual IDE Hard Disk Interface, IDE Connector J12

Contents

Little Board/486e Computer Revision Reason for Change Date Table of Contents Page Technical Specifications Index Technical Support Introduction This page left intentionally blank Viii Chapter FeaturesGeneral Description CPU/Motherboard VL-Bus Flat Panel/CRT Display Controller Enhanced Embedded-PC Bios Enhanced Parallel Port Serial PortsFloppy Interface IDE Interface Byte-Wide Socket and Solid State Disk SSD Ethernet LAN Interface Modular PC/104 Expansion Bus Enhanced Reliability Halt Testing Software Little Board Development Platform Overview Interface Connector Summary Connectors Connector Function Size Key Pin Connector and Jumper Locations Jumper Configuration Options Jumper Group Function DefaultSystem I/O Map Address Function DC Power Connector Type Mating ConnectorPin Connection Power Requirements Backup BatteryCooling Requirements Powerfail Monitor System Memory Map Dram Memory Address Function Expanded Memory and Extended Memory RS-232C Serial Ports Serial Ports J11, J13RS-485 Serial Port Addresses IRQ11 IRQ7 Interrupt Assignments Serial Port Connectors J11, J13 ROM-BIOS Installation of the Serial Ports Name Pin Ports Pin Signal Function In/Out DB25 Pin Signal Name Configuring Serial 2 for RS-485 J6, W5, W6 Pin RJ11 Signal Standard Wire Color RS-485 Twisted-Pair Cabling Using RJ11 Connectors Interconnection Scheme Examples Using the RS-485 Interface Serial Console Hex Command Serial Handshake COM Port Table Using a Serial Modem Serial Booting and Serial Programming Bi-Directional Parallel Port Register Name Address Primary SecondarySelection Address Interrupts ROM-BIOS Installation of Parallel Ports Signal Type Number of Lines Function Output DriveStandard and General Purpose I/O Operation Parallel Port Interrupt Parallel Port Interrupt Enable Register Bit Signal Name In/Out Active J15Or Function High/Low Pin J15 Pin Signal Function In/Out DB25 Name Parallel Port Connector J15 Register Bit Definitions Signal Name Full Name Description Floppy Disk Interface Floppy Drive ConsiderationsCapacity Drive Size Tracks Data Rate Floppy Interface Configuration Floppy Interface Connector J14Pin Signal Name Function In/Out IDE Hard Disk Interface IDE Connector J12 25. IDE Drive Interface Connector J12 IDE Interface Configuration Compact Flash Solid-State Disk Master/Slave SettingEnabling the Drive Solid-State Disk Preparation Connecting a CRT J5 Name Connector Pins/Type DescriptionFlat Panel/CRT Video Controller Part Description Mating Connector J5 Pin Signal Name DB-15 DB-9 W10 +5V Connecting a Flat Panel J3 FLM Pin Signal Description Name Advanced Power Management Power Sequencing Pgmebios VIDEO=filename Bios Support of Non-Standard Panels Selecting Vee Polarity LCD Bias Supply OptionJ4 Pin J3 Pin Description Ra = 270 Rb = Vee max Vee min / 1.5 Attaching an External Contrast Control Example Network Terms Ethernet Network Interface QNX Installing an Ethernet Boot Prom Installing a Boot Prom Twisted-Pair InstallationsInstalling a Boot Prom in Byte-Wide Socket S0 Twisted Pair Interface J7 Using Network Operating Systems NOS Network OS Drivers Controlling the Ethernet LAN Interface DirectlyProgram Name Vendor Function Driver Name 00 40 Manufacturer’s Ethernet ID Byte-Wide Socket S0 SSD Device Size Package Generic Type Pins Part Number ROM-BIOS Extensions Addressing the Byte-wide SocketWindow Address Accessing the Byte-Wide Socket Performance IssuesSolid State Disk SSD Drives Device 64KB Segment Address Size Segments Upper Nibble of BH Typical Devices Pins Jumper Diagram Byte-Wide Socket SignalsW14 Pin Signal Name Description Jumpering the Byte-Wide Socket Using EPROMs Flash Eprom Typical Devices Pins Jumper DiagramFlash Eprom Programming Non-volatile RAM Using SRAMs Utility Connector J16 Exsmi Pin Signal Name Function External Battery Connections Push Button Reset ConnectionPC Speaker LED Connection Battery-Backed Clock Watchdog Timer Jumper W4WDT Response AL,61H AL,NOT 08H OUT 61H,AL Page AT Expansion Bus Onboard MiniModule Expansion Using Standard PC and AT Bus Cards Bus Termination Bus Expansion Guidelines Expansion Bus Connector Pinouts PU/PD/S Pin Signal Function In/Out Current 47. AT Expansion Bus Connector, B1-B32 P1 48. AT Expansion Bus Connector, C0-C19 P2 PU/PD/S Interrupt Function Interrupt and DMA Channel Usage Channel Function Serial Parallel FloppyEthernet Video Setup Overview Menu Name Functions Standard CMOS/EEPROM Setup Setup Page 1-Standard CMOS/EEPROM Setup Date and Time Drive Parameter SetupFloppy Drives IDE Hard Disk DrivesPage Video Error HaltDram Memory System Post Extended Bios Setup Page 2-Options/Peripheral Configuration Parallel Port Serial PortPort Address Selection Address Interrupt IDE Interface Enable Floppy Interface EnableHot Key Setup Enable Selection Address Blank Post Test Video State Serial Boot Loader Enable Byte-Wide Socket ConfigurationWatchdog Timer Configuration Local Bus Video Display Flat Panel Display Type Installing a Modified Bios to Support a New Panel Extended Serial Console Configuration Setup Page 3-Serial Console ConfigurationPage Switch Function Creating Configuration Files with SETUP.COM DIR LPT1 Operation with DOS Utility Software Overview Embedded-PC System Enhancements Little Board/486e CPU Specifications Onboard Peripherals CRT Support for Standard Video Modes Vesa Font Pixels Clock Horiz Vert Mem Mode MHz KHz Support Software Mechanical and Environmental Specifications Mechanical Dimensions Technical Specifications Page Index Page POST, Setup Little Board/486e Technical Manual Index-4