KZPBA–CA PCI-to-UltraSCSI Host Adapter User’s Guide EK–KZPBA–UG.
Second Printing, May 1998 While Digital believes the information included in this publication is correct as of the date of publication, it is subject to change without notice. Digital Equipment Corporation assumes no responsibility for any errors that might appear in this document.
Contents Revision Record ................................................................................................................. vii About This Guide .............................................................................................................. ix 1 2 Overview 1.1 Introduction ........................................................................................................... 1–1 1.2 KZPBA–CA Ultra Wide Single-ended Host Adapter.........................................
KZPBA–CA PCI-to-UltraSCSI Host Adapter 3 Installing the KZPBA–CA Adapter (cont.) 3.3.2 Connecting External SCSI Devices................................................................... 3–8 3.4 Setting SCSI Bus Termination ............................................................................. 3–10 3.4.1 SCSI Device Termination............................................................................... 3–10 3.4.2 Host Adapter Termination ........................................................
Contents 6 Troubleshooting 6.1 Introduction........................................................................................................... 6−1 6.2 System Power-on Problems ................................................................................... 6−2 6.3 SCSI Device Problems .......................................................................................... 6−3 6.4 Boot Sequence Problems ....................................................................................
KZPBA–CA PCI-to-UltraSCSI Host Adapter Tables vi 1–1 KZPBA–CA Specifications.................................................................................... 1–4 4–1 Default FIFO Threshold for Various Chips ........................................................... 4−8 5−1 QLogic “Fast!Util” Main Menu Options............................................................... 5−2 5−2 Host Adapter Settings...........................................................................................
Revision Record This Revision Record provides a concise publication history of this guide. It lists the guide revision levels, release dates, and reasons for the revisions. It also describes how the changes to affected pages are marked in the guide. The following revision history lists all revisions of this publication and their effective dates. The publication part number is included in the Revision Level column, with the last entry denoting the latest revision.
About This Guide This chapter tells you what this User’s Guide does, identifies the audience, describes the structure and contents (chapter-by-chapter), lists the conventions used in the guide, and tells you how to get support and services from DIGITAL. Introduction This guide describes how to install and configure the KZPBA–CA PCI-to-Ultra SCSI Host Adapter, and how to use the software utilities to modify the parameters in the flash EEROM located on the module.
KZPBA–CA PCI–to–UltraSCSI Host Adapter • Chapter 3: Installing the KZPBA–CA PCI-to-Ultra SCSI Host Adapter — Describes how to install the KZPBA–CA board into a computer. The procedures include terminating the SCSI bus, verifying the installation, and connecting the board to internal and external SCSI devices.
About This Guide Support and Services Who to contact in the Americas Information and Product Questions: Local Sales Office / StorageWorks Hotline 1-800-786-7967 Installation Support: Contact the DIGITAL Distributor where the Storage Solution was Purchased / Local Digital Sales Office. DIGITAL Multivendor Customer Service (MCS) Installation Contact the DIGITAL Customer Support Center (CSC).
1 Overview This chapter provides an overview of the KZPBA–CA PCI-to-Ultra SCSI Host Adapter. The KZPBA–CA is an ultra wide single-ended host adapter. 1.1 Introduction The KZPBA–CA host adapter module provides the interface between the host computer’s PCI bus and internal and/or external SCSI devices. The KZPBA–CA combines a powerful Reduced Instruction Set Computing (RISC) processor, a SCSI executive processor, and a PCI local bus interface on a single chip.
KZPBA–CA PCI-to-UltraSCSI Host Adapter The host adapter supports multithreaded I/O operations, thereby allowing simultaneous operations on multiple SCSI targets or Logical Units (LUNs). In systems with multiple targets, the Disconnect/Reconnect feature optimizes SCSI bus usage. In systems that have fragmented memory buffers, the Scatter/Gather feature provides high performance. The KZPBA–CA comes with both AXP and Intel configuration utilities.
Chapter 1.
KZPBA–CA PCI-to-UltraSCSI Host Adapter 1.4 Support and Information Services The KZPBA–CA Host Adapter is designed for easy installation and use. If you need further assistance, please contact your DIGITAL services representative. Specifications for the KZPBA–CA are listed in Table 1–1.
2 Configuration Guidelines Before you install the KZPBA–CA host adapter in your computer, you need to become familiar with the product, the configuration guidelines for the host adapter, and its SCSI bus. This chapter includes installation guidelines, a description of single-ended SCSI buses, and sample configurations. NOTE If you are familiar with configuration guidelines and know the configuration that you are installing, skip to Chapter 3 and begin by installing the host adapter. 2.
KZPBA–CA PCI-to-UltraSCSI Host Adapter SCSI ID Selection The KZPBA–CA host adapter is assigned SCSI ID 7. For the SCSI devices mounted in the storage shelf, the device address is determined by its physical location in the storage shelf, with the slot number equating to the SCSI ID number. SCSI Bus Termination For a single-ended bus connection, the single-ended bus is terminated at one end by the KZPBA–CA adapter and at the other end by the StorageWork shelf Personality Module 2.
Chapter 2. Configuration Guidelines UltraSCSI Configuration Guidelines for cable lengths. For Fast-10 SCSI configurations with BA356 StorageWorks enclosures, the maximum cable length is 2.0 meters. 2.3 SCSI Bus Termination The integrity of the data written to or read from a SCSI device can be seriously compromised due to signal reflections caused by an unbalanced SCSI bus. An unbalanced bus is the result of an improperly terminated or unterminated bus.
KZPBA–CA PCI-to-UltraSCSI Host Adapter Figure 2–1 Host Adapter and FAST-10 StorageWorks Shelf NOTE Maximum cable length is 2 meters 2–4 EK–KZPBA–UG.
Chapter 2. Configuration Guidelines 2.5 UltraSCSI Configuration Example This sample configuration (Figure 2-2) shows how you can connect the KZPBA–CA PCI-to-SCSI Host Adapter to an UltraSCSI StorageWorks shelf. Figure 2–2 Host Adapter and UltraSCSI StorageWorks Shelf H ost C om pu te r S ystem M od ule P C I B us KZPBA S in gle-E nd ed A d a pte r ID 7 B N 3 8C -X X C a ble D S -B A 35 6 -X X S to rag e S he lf X X = Le ng th in M eters S H R -1 0 6 1 NOTE Maximum cable length is 20 meters.
3 Installing the KZPBA–CA Adapter This chapter describes how to install the KZPBA–CA board into a computer. The procedures include terminating the SCSI bus, verifying and troubleshooting the installation, and connecting the board to internal and external SCSI devices. 3.
KZPBA–CA PCI-to-UltraSCSI Host Adaptaer 3.2.1 User-Supplied Hardware and Software Requirements The KZPBA–CA PCI-to-UltraSCSI Host Adapter requires the following usersupplied hardware and software: • An AXP- or Intel-based computer system with a PCI local bus, a 3½-inch (1.
Chapter 3. Installing the KZPBA–CA Adapter Figure 3–1 KZPBA–CA Single-Ended Host Adapter CAUTION To protect the board from static discharge, wear an electrostatic discharge (ESD) wrist strap. If a wrist strap is unavailable, ground yourself by touching a bare metal surface on the computer chassis before you open the case. 1. Turn off the power to the computer system and attached peripherals. Disconnect the power cords. 2. Remove the computer cover. 3. Locate an available PCI bus slot.
KZPBA–CA PCI-to-UltraSCSI Host Adaptaer NOTE PCI cards are designed with their components on the opposite side of non-PCI cards 5. Secure the KZPBA–CA host adapter with the screw previously used to secure the slot cover. 6. Do not install the computer cover or reconnect power until all the SCSI devices are connected. Figure 3–2 Installing the KZPBA–CA Host Adapter 3–4 EK–KZPBA–UG.
Chapter 3. Installing the KZPBA–CA Adapter 3.3.1 Connecting Internal SCSI Devices Refer to your SCSI device documentation if you want to install one or more SCSI device inside the host computer. The internal device(s) must be singleended. To connect an internal SCSI device to the KZPBA–CA host adapter, you will need one, or both, of the following cables depending on the requirements of your internal drive.
KZPBA–CA PCI-to-UltraSCSI Host Adaptaer Figure 3–3 Installing the 68-pin Cable Connector Onto the Host Adapter Figure 3–4 Installing the 50-pin Cable Connector Onto the Host Adapter 3–6 EK–KZPBA–UG.
Chapter 3. Installing the KZPBA–CA Adapter NOTE The colored stripe on one side of the ribbon cable must be aligned with pin 1 on the host adapter board. For all remaining connections on the SCSI bus, make sure that the colored stripe edge of the ribbon cable aligns with pin 1 on the SCSI device connector. Pin 1 orientation is required so that all the SCSI devices will work properly. 2.
KZPBA–CA PCI-to-UltraSCSI Host Adaptaer Figure 3–6 Connecting Ribbon Cable to a Second Internal SCSI Device 4. To connect three or more internal SCSI devices to the SCSI bus, the ribbon cable must have enough connectors to accommodate all the devices. Plug the connectors into the SCSI devices maintaining the pin-1 orientation. 5. If you are using both internal connectors on the host adapter, proceed in the same fashion as above for the other cable. 3.3.
Chapter 3. Installing the KZPBA–CA Adapter Figure 3–7 Connecting External SCSI Cable to Host Adapter 2. Attach the other end of the cable to the connector on the personality module in the DS–BA356–XX wide SCSI storage shelf (see Figure 3–8). EK–KZPBA–UG.
KZPBA–CA PCI-to-UltraSCSI Host Adaptaer Figure 3–8 Connecting External SCSI Cable to External SCSI Device E xtern al S C S I D evice s E xterna l S C S I C ab le s 3.4 P erson a lity M od u le S H R -10 6 0 Setting SCSI Bus Termination A set of terminating resistors must be either physically installed or software enabled on the first and last physical device on the SCSI bus. You may have to change the termination on the host adapter module and on some of the SCSI devices. 1.
Chapter 3. Installing the KZPBA–CA Adapter 3.4.2 Host Adapter Termination Termination on the KZPBA–CA single-ended host adapter module is software controlled and its default is auto enabled. If you are using only one internal connector or external connector, the default does not have to be changed. Single-Ended Module On the single-ended module, if you are using both internal connectors, the default termination must be changed.
KZPBA–CA PCI-to-UltraSCSI Host Adaptaer Figure 3–9 Single Internal SCSI Bus CAUTION A KZPBA–CA host adapter does not support the simultaneous use of both internal and external connectors. If it is necessary to attach both internal and external SCSI devices, a second KZPBA–CA Host Adapter can be installed in the same host computer.
Chapter 3. Installing the KZPBA–CA Adapter Figure 3–10 Two Internal SCSI Buses External Devices Only When only external SCSI devices are connected to the host adapter, the last external device must be terminated and all other devices must have their termination removed. DIGITAL StorageWorks simplifies this by terminating the end of the bus within the storage enclosure. For example, as shown in Figure 3-11, the end of the bus is terminated by the Personality Module.
KZPBA–CA PCI-to-UltraSCSI Host Adaptaer Figure 3–11 External SCSI Bus Term ination E nabled Pers onality M odule Hos t A dapter Ternm ination Enabled K ZPB A -13 S H R -1 05 9 3.5 SCSI Device Identification (SCSI ID) and Arbitration Every device on a SCSI bus, including the Host Adapter, must be uniquely identified with a SCSI ID.
Chapter 3. Installing the KZPBA–CA Adapter SCSI Bus Priority Arbitration SCSI bus priority arbitration is based on the SCSI ID of the arbitrating device. Priority arbitration is established from highest to lowest. The host adapter is normally assigned SCSI ID 7. For example, in the following priority arbitration scheme, SCSI ID 7 has the highest priority and SCSI ID 8 has the lowest priority: SCSI ID 7-6-5-3-2-1-0-15-14-13-11-9-8 3.
KZPBA–CA PCI-to-UltraSCSI Host Adaptaer If you do not see this menu, refer to your system documentation for more information about initially setting up your Alpha AXP. Return to this procedure when you have the Boot Menu displayed. 2. From the Boot Menu, select the Supplementary Menu item. 3. Next, select the Display Hardware Configuration item. The system will now display several pages of information about your Alpha AXP system. 4.
Chapter 3. Installing the KZPBA–CA Adapter PCI slot information Bus Device Number Function Number Vendor ID Device ID Revision ID Interrupt Vector Device Type 0 8 0 1011 1 2 0 PCI Bridge 0 10 0 8086 482 5 0 EISA Bridge 0 11 0 1011 4 2 11 Video Card 1 0 0 1011 2 24 21 Ethernet 1 1 0 0 1020 2 22 SCSI 1 2 0 0 1020 2 23 SCSI 6. Note that the fifth row in the table contains a Vendor ID field of 0 and a Device ID of 1020.
KZPBA–CA PCI-to-UltraSCSI Host Adaptaer 3.7.2 For Systems Running Alpha BIOS If your system is running with an Alpha BIOS, verify the proper installation of the KZPBA-CA as follows: 1. Power up your system; after the Alpha AXP goes through its start-up sequence the Alpha BIOS initialization screen should appear. 2. Press F2 for setup. 3. Select Display System Configuration… from the Alpha BIOS setup menu. 4.
Chapter 3. Installing the KZPBA–CA Adapter 3.8 3. To further verify the installation, if desired, press the Alt-Q key combination when the QLogic Ultra board BIOS initialization message appears to start the QLogic Fast! Utility. 4. The QLogic Fast! Utility displays the selected adapter in the top, left-hand corner of the main menu. Select the Scan SCSI bus option from the Fast! Util Options menu. See Chapter 5 for more details on using the QLogic Fast! Utility.
KZPBA–CA PCI-to-UltraSCSI Host Adaptaer Digital Equipment Corporation AlphaServer 2100 4/200 SRM Console V4.0 – 3 Component VMS PALcode X5.48-94, OSF PALcode X1.35-39 Status Module ID CPU 0 P B2020-AA DECchip (tm) 21064-3 Memory 0 P B2021-BA I/O 64 MB B2021-AA dva0.0.0.0.1 Slot RX26 Option Hose 0, Bus 0, PCI 0 DECchip 21040-AA ewa0.0.0.0.0. 08.00-2B-E2-82-34 1 NCR 53C810 pka0.7.0.1.0 SCSI Bus ID 7 dka200.2.0.1.0 RZ26 dka600.6.0.1.
4 EEROM Configuration Utility (Alpha-Systems) This chapter describes the EEROM configuration utility for the KZPBA-CA adapter in Alpha- systems. 4.1 EEROM Parameter Settings The KZPBA-CA host adapter ships with factory default EEROM parameters that determine how the host adapter board operates and interacts with connected devices. The default EEROM parameter settings were chosen to provide the best performance optimization for most system configurations.
KZPBA-CA PCI-to-UltraSCSI Host Adapter 4.2.1 Setting Terminal To display the EEROM Configuration Utility on a VT320, or newer generation terminal, set your terminal to: VT300 mode, 8 bit controls. 4.2.2 Starting the EEROM Configuration Utility Starting the EEROM Configuration Utility varies depending upon whether your system runs AlphaBIOS. For systems without AlphaBIOS go to section 4.2.2.1. For systems with AlphaBIOS go to section 4.2.2.2. 4.2.2.
Chapter 4. EEROM Configuration Utility 4. 5. Type either of the following at the prompt and press Enter: To start from a floppy diskette, type: a:eeromcfg To start from a CD-ROM, type: cd:\utility\eeromcfg Press the Enter key. The ISP1020/1040 EEROM Configuration Utility V2.1 screen appears similar to the one shown in Figure 4–2. Figure 4–2 The Select ISP1020/1040 Screen ------------------------------------------------------------ISP1020/1040 EEROM Configuration Utility V2.
KZPBA-CA PCI-to-UltraSCSI Host Adapter 4.2.2.2 Systems With AlphaBIOS For systems with AlphaBIOS, follow these steps to start the EEROM Configuration Utility: 1. If your system runs Windows NT, go to Step 3; otherwise continue with Step 2. 2. If your system is running SRM console, set the os_type variable to NT by typing: set os_type NT; then reboot your system. NOTE Remember to reset your system back to the SRM after running the configuration utility.
Chapter 4. EEROM Configuration Utility 4.3 Using the EEROM Configuration Utility Use the up and down arrow keys to move the selector brackets [ ]. To begin, move the selector brackets to the ISP1020/1040 on the Select ISP1020/1040 screen, shown in Figure 4−2, that you want to configure. The Configure EEROM Parameters menu appears as shown in Figure 4–3 for ISP 1020 and in Figure 4−4 for ISP 1040.
KZPBA-CA PCI-to-UltraSCSI Host Adapter 4.4 Changing EEROM Parameters Tables A–1 and A–3 in Appendix A describe reasons to change the EEROM parameters. This section describes how to change: • Host adapter parameter settings, which control the general operation of the KZPBA-CA host adapter and, • Device EEROM parameter settings, which control how the KZPBA-CA interacts with connected devices. 4.4.1 Changing Host Adapter Parameters To change host adapter parameters, follow these steps: 1.
Chapter 4.
KZPBA-CA PCI-to-UltraSCSI Host Adapter Table 4−1 Default FIFO Threshold for Various Chips Chip Default FIFO Threshold ISP 1020 ISP 1020A ISP 1040B 32 bytes 64 bytes 64 bytes Value Representing Each Threshold 2 3 3 3. When you finish changing host adapter parameters, press the “o” key to confirm your changes. Press the “c” key if you do not want to save changes and return to the main menu. If you press the “o” key, a confirmation screen appears. 4.
Chapter 4.
KZPBA-CA PCI-to-UltraSCSI Host Adapter 4. When you finish changing device adapter parameters, press the “o” key to save your changes, or press the “c” key if you do not want to save changes. If you press the “o” key, a Write EEPROM Parameters screen appears. If you press the “c” key, the main menu appears. 5. Press “y” to save changes and return to the main menu, or press “n” to return to the main menu without saving changes.
Chapter 4. EEROM Configuration Utility 4.4.4 Enabling FAST-10 on all Devices Connected to a FAST-10 Board To set all devices connected to a FAST-10 board to negotiate for FAST-10, follow these steps: 1. Use the up and down arrow keys, or type “f” to move the bracket selector to the Enable (F)AST-10 on all devices option on the Configure EEROM Parameters menu and press Enter to select. NOTE This option appears on the Configure EEROM Parameters menu only if the selected board is FAST-10. 2.
5 QLogic “Fast!Util” (Intel-Systems) This chapter describes the QLogic “Fast!Util” for the KZPBA-CA adapter in Intel-systems. 5.1 EEROM Parameter Settings The KZPBA-CA host adapter ships with factory default EEROM parameters that determine how the host adapter board operates and interacts with connected devices. The default EEROM parameter settings were chosen to provide the best performance optimization for most system configurations.
KZPBA-CA PCI-to-UltraSCSI Host Adapter Figure 5−1 QLogic Fast! Util Main Menu QLogic Fast! UTIL Version 1.27 Selected Adapter Adapter Type I/O Address PCI Ultra-W 8000 Fast! UTIL Options Configuration Settings Scan SCSI Bus SCSI Disk Utility Select Host Adapter Exit Fast! UTIL Use to move cursor, to select option, to backup 3. Use the arrow keys to highlight any of the options on the main menu as described in Table 5−1 and press the Enter key to select.
Chapter 5. QLogic Fast!Util 5.3 Changing Configuration Settings You can change configuration settings for a particular option, reset all settings to their defaults, or auto–configure settings. To change or view configuration settings, follow these steps: 1. Use the arrow keys to move the cursor to Configuration Settings on the Fast!Util main menu and press the Enter key. The Configuration Settings menu appears as shown in Figure 5−2.
KZPBA-CA PCI-to-UltraSCSI Host Adapter Figure 5−3 Host Adapter Settings QLogic Fast! UTIL Version 1.27 Selected Adapter Adapter Type I/O Address PCI Ultra-W 8000 Host Adapter Settings BIOS Address: BIOS Revision: Interrupt Level: Host Adapter: Host Adapter BIOS: Host Adapter SCSI ID: PCI bus DMA burst: SCSI bus reset: SCSI bus reset delay: SCSI termination: CC000 4.15 5 Enabled Enabled 7 Enabled Enabled 5 seconds Auto Use and to change settings, to exit 5–4 2.
Chapter 5. QLogic Fast!Util Table 5−2 Host Adapter Settings Setting Range Default Host Adapter Enabled or Disabled Enabled Host Adapter BIOS Enabled or Disabled Enabled Host Adapter SCSI ID 0-7 (Fast!SCSI PCI UltraN) 7 0-15 (Fast!SCSI PCI UltraW and Fast!SCSI PCI Ultra-D) PCI bus DMA burst Enabled or Disabled Enabled SCSI bus reset Enabled or Disabled Enabled SCSI bus reset delay 0-15 seconds 5 seconds SCSI termination Auto, Enabled, Disabled, High only Auto 5.3.
KZPBA-CA PCI-to-UltraSCSI Host Adapter Figure 5−4 SCSI Device Settings QLogic Fast! UTIL Version 1.
Chapter 5. QLogic Fast!Util 3. 4. Use the Tab key to select an entire group of settings or the arrow key to select the setting for one SCSI ID at a time. Press the Enter key to toggle the setting option. Table 5−3 shows the default SCSI device settings. Press the Esc key to return to the Configuration Settings menu when you complete the SCSI device settings.
KZPBA-CA PCI-to-UltraSCSI Host Adapter 3. When the utility finishes polling the SCSI IDs, it displays a list of the SCSI device settings, similar to the list shown in Figure 5−4. 4. Change settings as needed. Press the Esc key to exit. 5.3.4 Restoring Default Settings Use Restore Default Settings to restore SCSI device settings to their default states. To restore the default settings, do these steps: 1.
Chapter 5. QLogic Fast!Util 5.5 Formatting Devices Use the SCSI Disk Utility option to select a device on the SCSI bus for low-level formatting, or to check for media defects. To use the SCSI Disk Utility, follow these steps: 1. Use the arrow keys to move the cursor to SCSI Disk Utility option on the Fast!Util main menu and press the Enter key. The utility displays the message: Checking SCSI ID #. 2.
6 Troubleshooting This chapter provides troubleshooting information to help diagnose problems that can occur during the installation of the KZPBA-CA adapter. If you experience difficulty in installing or verifying the operation of the adapter, refer to the information in the troubleshooting tables to isolate and diagnose the problem. 6.1 Introduction Troubleshooting is the process of isolating and diagnosing problems.
KZPBA-CA PCI-to-UltraSCSI Host Adapter 6.2 System Power-on Problems After you turn on your host system, the CPU either performs a series of self-tests or enters the console mode. Table 6–1 describes possible problems that could occur during self-tests, specifies their probable cause, and provides corrective action. Table 6–1 Power-on Problems Troubleshooting Table 6–2 Symptom Probable Cause Corrective Action System self-tests halt with error message or error summary displayed on console terminal.
Chapter 6. Troubleshooting 6.3 SCSI Device Problems Table 6–2 lists a SCSI device problem, specifies the probable causes, and suggests corrective actions for each probable cause. Table 6–2 SCSI Device Troubleshooting Table Symptom Probable Cause Corrective Action SCSI device does not appear in the configuration display after the SRM console command, Device cannot negotiate wide or synchronous transfers. Use the EEROM configuration utility to disable (see Chapter 4).
KZPBA-CA PCI-to-UltraSCSI Host Adapter Table 6–2 SCSI Device Troubleshooting Table (Continued) Symptom Probable Cause Corrective Action SCSI device . . . (con't) SCSI bus not terminated properly. Ensure each end of the bus is terminated. Ensure devices in the middle of the bus are not terminated. Total length of SCSI bus too long. Check total length of SCSI bus as follows: Ultra Single-ended, 1.5 meters, maximum. Defective SCSI device. 6.4 Replace SCSI device.
Chapter 6. Troubleshooting Table 6–3 Boot Sequence Troubleshooting Table Symptom Probable Cause Boot failure Incorrect boot device was specified at the console boot command. Re-define the default boot device. Refer to your system user's guide for specific environmental parameter settings. KZPBA-CA is not terminated properly. Ensure each end of the SCSI bus is terminated. KZPBA-CA is in an unknown state.
A EEROM Parameter Settings This chapter describes EEROM device-specific parameters on the KZPBA-CA. It provides a description of each parameter, its default setting, and available options. It also lists the FIFO threshold controls and their corresponding parameter settings, the asynchronous data setup times, and the parameter selection time-out values. A.
KZPBA-CA PCI-to-UltraSCSI Storage Adapter Table A–1 Descriptions of Host Adapter Parameters (KZPBA-CA General Operation) Parameter Default FIFO Threshold Description Option Sets the FIFO threshold point at which burst transfers are requested on the KZPBA-CA host adapter. The burst transfer is triggered differently for host memory write operations and host memory read operations. The bus transfer is triggered when the FIFO byte count reaches the threshold point for host memory writes operations.
Appendix A. EEROM Parameter Settings Table A–1 Descriptions of Host Adapter Parameters (KZPBA-CA General Operation) (Continued) Parameter Default Description Option REQ/ACK Active Negation 1 Provides Active pull-up assist in single-ended mode. (The REQ and ACK signals are pulled up.) By enabling active negation, the KZPBA-CA host adapter is less sensitive to an imperfect SCSI bus. Set to 0 to disable the active negation.
KZPBA-CA PCI-to-UltraSCSI Storage Adapter Table A–1 Descriptions of Host Adapter Parameters (KZPBA-CA General Operation) (Continued) Parameter Default High Termination Enable 1 Provides termination to the highorder eight bits. Set to 0 if termination not required on highorder 8-bits, or not required on the board. See termination section of this guide for termination requirements. Selection Timeout 250 Sets the selection phase time-out value. Table A–4 shows the time-out values available.
Appendix A. EEROM Parameter Settings Table A–2 FIFO Threshold Controls and Corresponding Parameter Setting Parameter FIFO Threshold Point Enable FIFO 128 128 bytes full during host memory writes. 128 bytes empty during host memory reads. 3 (default) 64 bytes full during host memory writes. 64 bytes empty during host memory reads. 2 32 bytes full during host memory writes. 32 bytes empty during host memory reads. 1 16 bytes full during host memory writes. 16 bytes empty during host memory reads.
KZPBA-CA PCI-to-UltraSCSI Storage Adapter Table A–4 Descriptions of Device EEROM Parameters (KZPBA-CA to Device Interaction) Parameter Default Re-negotiate-onError 1 Set to 1, enables re-negotiation for synchronous and wide data transfers (if wide transfers are enabled) after a hard reset, power cycle, or a bus device reset. Set to 0 to disable renegotiation on error.
Appendix A. EEROM Parameter Settings Table A–4 Descriptions of Device EEROM Parameters (KZPBA-CA to Device Interaction)(Continued) Parameter Default Disconnect Allowed 1 Determines whether the drive can sever its communications link. Allows the drive to sever the communications link when the KZPBA-CA issues a command. The KZPBA-CA must re-establish the link (through a reconnect) when it is ready to continue executing. When set to 0, disconnects are not allowed.
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