ISA Expansion Bus Connectors | NEC SP B-Series guide

ISA Expansion Bus Connectors

The expansion slot signals, voltages, and grounds are supplied through the bus connectors. The following table provides the pin assignments for the ISA expansion bus.

ISA Expansion Slot Pin Assignments

Pin	Direction	Signal	Pin	Direction	Signal
A1	Input	IOCHCK#	B1	Ground	Ground
A2	Input/Output	SD7	B2	Reset	RESET
					(RESDRV)
A3	Input/Output	SD6	B3	Power	+5V
A4	Input/Output	SD5	B4	Input	IRQ9
A5	Input/Output	SD4	B5	Power	-5V
A6	Input/Output	SD3	B6	Input	DRQ2
A7	Input/Output	SD2	B7	Power	-12V
A8	Input/Output	SD1	B8	Input	SRDY#
					(N0WS#)
A9	Input/Output	SD0	B9	Power	+12V
A10	Input	IOCHRDY	B10	Ground	Ground
A11	Output	AEN	B11	Output	SMEMW#
					(SMWTC#)
A12	Input/Output	SA19	B12	Output	SMEMR#
					(SMRDC#)
A13	Input/Output	SA18	B13	Input/Output	IOW# (IOWC#)
A14	Input/Output	SA17	B14	Input/Output	IOR# (IORC#)
A15	Input/Output	SA16	B15	Output	DACK3#
A16	Input/Output	SA15	B16	Input	DRQ3
A17	Input/Output	SA14	B17	Output	DACK1
A18	Input/Output	SA13	B18	Input	DRQ1
A19	Input/Output	SA12	B19	Input/Output	REFRESH#
A20	Input/Output	SA11	B20	Output	BCLK
A21	Input/Output	SA10	B21	Input	IRQ7
A22	Input/Output	SA9	B22	Input	IRQ6
A23	Input/Output	SA8	B23	Input	IRQ5
A24	Input/Output	SA7	B24	Input	IRQ4
A25	Input/Output	SA6	B25	Input	IRQ3
A26	Input/Output	SA5	B26	Output	DACK2#
A27	Input/Output	SA4	B27	Output	TC

Connector Pin Assignments B-13

Image 114

NEC SP B-Series manual ISA Expansion Bus Connectors, ISA Expansion Slot Pin Assignments, Connector Pin Assignments B-13

Contents

DI Rect I on SP B-SERIES Proprietary Notice and Liability Disclaimer Contents Option Installation Iv Contents Disassembly and Reassembly Vi Contents System Resources List of Figures Viii Contents List of Tables Preface Preface Abbreviations Xii Technical Information Front Features Desktop Models System OverviewTechnical Information Video Connector Rear Features Desktop ModelsAudio Connectors Desktop Models MIDI/Game Port Line Out Jack Line In Jack Microphone Jack Front Features Minitower Models Rear Features Minitower Models Processor Audio Connectors Minitower ModelsSystem Board System Cache/Memory Chipset PCI Local BusExpansion Bus Plug and Play Support Cmos Memory/Real-Time Clock BatteryDMA/IRQ Settings System Memory Map System Resource Interrupt Level AssignmentsDMA Assignments Resource IDE Ports PortsSound System Diskette Drive Power SupplyModem Board optional Hard Drive Power Management Utilities Bios Setup Utility When to Use SetupUtilities How to Start Setup How to Use SetupMain Setup Menu Menu Bar Displaying a Submenu Setup Key FunctionsSelecting a Menu Item Getting Help Main Menu Peripheral Configuration Submenu Advanced Menu IDE Configuration Submenu Utilities Floppy Options Submenu Video Configuration Submenu DMI Event Logging Submenu Resource Configuration Submenu Security Menu Power Menu Boot Menu Hard Drive Submenu Removable Devices Submenu Intel Processor Serial Number Control Utility Exit Menu FAQs System RequirementsProcessor Serial Number Why would I want to turn off my processor serial number? Errata Technical Support Option Installation Precautions Option InstallationGeneral Rules Access Cover Removal Access Cover Replacement Releasing the CoverRelease Tab Expansion Boards Aligning the TabsTabs Slots Locating Expansion Slots Expansion Board InstallationExpansion Slot Locations ISA Slots PCI/ISA Slot PCI Slots AGP Slot Removing the Slot Cover Screw Slot Cover Memory Upgrade Installing a BoardExpansion Board Removal Sample Memory Configurations Bank Total RAM Dimm Removal Removing a Dimm Dimm Installation Installing a DimmData Storage Devices Device Slots Device PreparationLocating Device Slots Secondary IDE Cable Connector System Board Cable ConnectorsDiskette Drive Cable Connector Device Cables Diskette Drive Signal Cable IDE Signal CablesDiskette Drive Signal Cable System Power Cables IDE Signal CablePower Cable Connectors Device Cabling Cabling an Accessible 5 1/4-Inch DeviceConnecting IDE Device Cables Cabling an IDE Device Device Connector Red Edge Signal Cable Storage Device InstallationConnecting an Accessible 5 1/4-Inch Device Removing the Front Panel Locating the Device Cage Screw Removing the CD-ROM/DVD DriveReleasing the Front Panel Two Release Tabs Installing a 3 1/2-Inch Device Removing the Bracket Screws Aligning the Holes and TabsHole Tab Securing the Drive Inserting the Device Be careful of sharp edges Installing a 5 1/4-Inch Device Installing the Device Replacing the Front Panel External Options Parallel PrinterLocating the Parallel Port RS-232C Device Connection Locating the Serial Ports Maintenance and Troubleshooting Maintenance and Troubleshooting MaintenanceNEC CSD Service and Information Telephone Numbers Service Telephone Number System Cleaning Keyboard CleaningMouse Cleaning Troubleshooting Diagnosing and Solving Problems Problems and Solutions Problem Symptom Solution Problems and Solutions Problems and Solutions Problems and Solutions Beep Codes Beep Code DescriptionsBeeps Description Cmos Battery Replacement Locating the Battery Maintenance and Troubleshooting Disassembly and Reassembly Disassembly Sequence Disassembly and ReassemblySequence Part See Disassembly System Access Cover Front Panel Removal Removing a Board Side Panel Removal Device Cage Removal Diskette Drive Removal 4-Inch Device RemovalLocating the Two Diskette Drive Clips Optional 3 1/2-Inch Hard Drive Removal Removing the 5 1/4-Inch Device Screws Standard 3 1/2-Inch Hard Drive Removal Removing the Securing ScrewRemoving the Drive Fan Assembly Removal Power Supply RemovalDimm Module Removal Removing the Power Supply Screws System Board Removal Removing the System Board Screw Direction SP B-Series Desktop Field-Replaceable Parts List Illustrated Parts Breakdown 3C509C-TX network board Direction SP B-Series Desktop Illustrated Parts Breakdown Direction SP B-Series Minitower Field-Replaceable Parts List Speaker, internal Direction SP B-Series Minitower Illustrated Parts Breakdown System Specifications Random Access Memory System SpecificationsProcessor Video Memory System Specifications A-3Read-Only Memory Calendar Clock Storage Devices Expansion SlotsKeyboard and Mouse Device Slots System Specifications A-5 Graphics Power DimensionsWeight Sound System System Specifications A-7 Recommended Operating Environment Connector Pin Assignments System Board Connectors Connector Pin AssignmentsConnectors Number System Board Expansion Slot, Memory, and I/O Connectors System Board Connectors and JumperConnector Pin Assignments B-3 Description Connector Number System Board Internal ConnectorsSystem Board Connector Numbers and Types Function Number Type RS-232C Serial Port Connector Pin Assignments Serial Interface ConnectorsParallel Interface Connector Parallel Port Connector Pin Assignments Power Supply Primary Primary Power Supply Connector Pin Assignments Front Panel Connector Pin Assignments Keyboard and Mouse ConnectorsKeyboard and Mouse Connector Pin Assignments Connector Pin Assignments B-7 Diskette Drive Interface Connector Diskette Drive Connector Pin AssignmentsPin Description IDE Interface Connector IDE/PCI Connector Pin AssignmentsConnector Pin Assignments B-9 Dimm Sockets Dimm Socket Pin Assignments AGP Connector AGP Connector Pin AssignmentsConnector Pin Assignments B-11 SBA3 Pin Direction Signal ISA Expansion Bus ConnectorsConnector Pin Assignments B-13 ISA Expansion Slot Pin Assignments SA3 PCI Expansion Bus Connectors Connector Pin Assignments B-15PCI Expansion Slot Pin Assignments Universal Serial Bus USB Connectors USB ConnectorsPin Signal Name System Resources IRQ Settings System Resource InformationSystem Resources Function Jumper J8A1 Configuration Jumper SettingsSystem Board Jumper Settings Locating the Jumper Clearing Your Password Recovering the Bios System Resources C-5 Glossary Glossary APM AVI Bit Block Transfer Boot sector Cmos Dimm Eide Hz a unit of frequency equal to one cycle per second KB 1024 bytes Midi Interface that communicates eight bits at a time To extract data from a storage device such as a diskette Printer with a serial interface Tracks per inch To record or store information to a storage device Index Index-1 IPB Index-2 Post Index-3 Index-4 USB Index-5Page Battery Replacement 102343SRV