Related Manuals for National Instruments VXI-AT2000
Summary of Contents for National Instruments VXI-AT2000
- Page 1 Getting Started with Your VXI-AT2000 and the ™ NI-VXI Software for MS-DOS October 1993 Edition Part Number 320219-01 © Copyright 1989, 1994 National Instruments Corporation. All Rights Reserved.
- Page 2 National Instruments Corporate Headquarters 6504 Bridge Point Parkway Austin, TX 78730-5039 (512) 794-0100 Technical support fax: (800) 328-2203 (512) 794-5678 Branch Offices: Australia (03) 879 9422, Austria (0662) 435986, Belgium 02/757.00.20, Canada (Ontario) (519) 622-9310, Canada (Québec) (514) 694-8521, Denmark 45 76 26 00, Finland (90) 527 2321, France (1) 48 14 24 24, Germany 089/741 31 30, Italy 02/48301892, Japan (03) 3788-1921, Netherlands 03480-33466, Norway 32-848400, Spain (91) 640 0085, Sweden 08-730 49 70, Switzerland 056/20 51 51, U.K.
- Page 3 Any action against National Instruments must be brought within one year after the cause of action accrues. National Instruments shall not be liable for any delay in performance due to causes beyond its reasonable control. The warranty provided herein does not cover damages, defects, malfunctions, or service failures caused by owner's failure to follow the National Instruments installation, operation, or maintenance instructions;...
- Page 4 Any use or application of National Instruments products for or involving medical or clinical treatment must be performed by properly trained and qualified medical personnel, and all traditional medical safeguards, equipment, and procedures that are appropriate in the particular situation to prevent serious injury or death should always continue to be used when National Instruments products are being used.
- Page 5 Be sure that the equipment is plugged into a grounded outlet and that the grounding has not been defeated with a cheater plug. Notice to user: Changes or modifications not expressly approved by National Instruments could void the user’s authority to operate the equipment under the FCC Rules.
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Page 6: Table Of Contents
NI-VXI Software Overview...................3-1 Main Programs and Files ...................3-1 Additional Programs and Files................3-2 Installing the Software ....................3-5 Modifying the AUTOEXEC.BAT File..............3-6 Configuring the NI-VXI Software .................3-6 Running VXIEDIT.....................3-7 Logical Address Configuration................3-8 Bus Configuration....................3-12 © National Instruments Corporation VXI-AT2000/NI-VXI MS-DOS Getting Started... - Page 7 Memory Area Used by Another Device ............B-4 Memory Area Used by Expanded-Memory Manager or Emulator ....B-4 Problems with Mouse.....................B-5 Problems with MXIbus Cable..................B-5 Appendix C Customer Communication ....................C-1 Glossary ........................Glossary-1 VXI-AT2000/NI-VXI MS-DOS Getting Started viii © National Instruments Corporation...
- Page 8 Contents Figures Figure 1-1. VXI-AT2000 Interface Kit ................1-1 Figure 2-1. AT-MXI Parts Locator Diagram...............2-2 Figure 2-2. Base I/O Address Switch Settings ..............2-4 Figure 2-3. Board and MXIbus Interrupt Jumper Settings..........2-7 Figure 2-4. DMA Channel Settings..................2-10 Figure 2-5. AT-MXI Installed in a Computer..............2-12 Figure 2-6.
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Page 9: About This Manual
This manual contains instructions for installing and configuring the National Instruments VXI-AT2000 interface kit. This manual is meant to be used with the NI-VXI Software Reference Manual for C (part number 320307-01), the NI-VXI Software Reference Manual for BASIC (part number 320328-01), and the NI-VXI DOS Utilities Reference Manual (part number 320323-01). -
Page 10: Conventions Used In This Manual
Utilities Reference Manual to learn more about the VIC and VXIEDIT programs. The LabWindows VXI Library Reference Manual, part number 320318-01, explains how to install and use the optional LabWindows VXI Library for the AT-MXI. VXI-AT2000/NI-VXI MS-DOS Getting Started © National Instruments Corporation... -
Page 11: Related Documentation
VXI-MXI User Manual (part number 320222-01) Customer Communication National Instruments wants to receive your comments on our products and manuals. We are interested in the applications you develop using our products, and we want to help if you have problems with them. To make it easy for you to contact us, this manual contains comment and configuration forms for you to complete. -
Page 12: Chapter 1 Introduction
The VXI-AT2000 is an interface kit that links any IBM Personal Computer AT or compatible computer (hereafter referred to as the PC AT) directly to the VXIbus. A PC AT equipped with a VXI-AT2000 can function as a VXI Commander and Resource Manager. -
Page 13: What Your Kit Should Contain
5.25 in. NI-VXI Distribution Disks for the AT-MXI and 420178-48 MS-DOS 420179-48 2 m Type M1 MXIbus Cable * 180758-02 Getting Started with Your VXI-AT2000 and the NI-VXI Software for MS-DOS 320219-01 NI-VXI DOS Utilities Reference Manual 320323-01 NI-VXI Software Reference Manual for BASIC... -
Page 14: Optional Equipment
MXIbus Terminating Pac (External) 180780-01 VXI-MXI Standard VXIbus Mainframe Extender Kit 776310-01 VXI-MXI Enhanced VXIbus Mainframe Extender Kit 776310-02 VME-MXI Standard VMEbus Chassis Extender Kit 776434-01 VME-MXI Enhanced VMEbus Chassis Extender Kit 776434-02 © National Instruments Corporation VXI-AT2000/NI-VXI MS-DOS Getting Started... -
Page 15: Optional Software
Chapter 1 Optional Software If you want to use LabWindows with your VXI-AT2000 system, you can order either the LabWindows for DOS, VXI Development System, or the LabWindows/CVI for Windows, VXI Development System. If you want LabWindows/CVI, you must also order NI-VXI Windows Software for the AT-MXI. -
Page 16: Hardware Configuration And Installation
Chapter 2 Hardware Configuration and Installation This chapter contains the instructions to configure and install the VXI-AT2000 interface kit. The instructions are given in the order that you should perform them. A summary of the steps is as follows: 1. Unpack the AT-MXI and VXI-MXI hardware. -
Page 17: Step 2. Configure The At-Mxi Hardware
Art not available in PDF version of document. Figure 2-1. AT-MXI Parts Locator Diagram Switch and Jumper Settings You can configure three options on the AT-MXI board: • Base I/O address • Interrupt levels • DMA channels VXI-AT2000/NI-VXI MS-DOS Getting Started © National Instruments Corporation... -
Page 18: Base I/O Address Selection
I/O address space. If you change the base I/O address of the AT-MXI, you must make a corresponding change to the AT-MXI configuration software as described in the Configuring the NI-VXI Software section of Chapter 3 of this manual. © National Instruments Corporation VXI-AT2000/NI-VXI MS-DOS Getting Started... -
Page 19: Figure 2-2. Base I/O Address Switch Settings
Switch Set to Base I/O Address hex 100 Binary Hex ON=0 OFF=1 ON=0 OFF=1 OFF=1 b. Switch Set to Default Setting (Base I/O Address hex 340) Figure 2-2. Base I/O Address Switch Settings VXI-AT2000/NI-VXI MS-DOS Getting Started © National Instruments Corporation... -
Page 20: Table 2-2. Possible Base I/O Address Settings For The At-Mxi
1 0 1 1 1 2E0 - 2FF 1 1 0 0 0 300 - 31F 1 1 0 0 1 320 - 33F 1 1 0 1 0 340 (default) 340 - 35F (continues) © National Instruments Corporation VXI-AT2000/NI-VXI MS-DOS Getting Started... -
Page 21: Interrupt Level Selection
AT-MXI or the other devices. If you change an AT-MXI interrupt level, make a corresponding change to the AT-MXI configuration software as described in the Configuring the NI-VXI Software section of Chapter 3. VXI-AT2000/NI-VXI MS-DOS Getting Started © National Instruments Corporation... -
Page 22: Figure 2-3. Board And Mxibus Interrupt Jumper Settings
Figure 2-3. Board and MXIbus Interrupt Jumper Settings To change to another interrupt level, remove the appropriate jumper from its current position and place it on the new posts. Figure 2-3b shows the board interrupt level changed to IRQ5. © National Instruments Corporation VXI-AT2000/NI-VXI MS-DOS Getting Started... -
Page 23: Dma Channel Selection
DMA with your AT-MXI. The slave-mode DMA channel is necessary only for setting up shared access to PC AT resource from external MXIbus devices. If you intend to communicate with VXI devices using a shared VXI-AT2000/NI-VXI MS-DOS Getting Started © National Instruments Corporation... - Page 24 Use the two rows of pins farther from the card-edge connector to select the master-mode DMA channel and the two rows closer to the card-edge connector to select the slave-mode DMA channel. Remember that the jumper positions should be identical on both the W1 and W2 arrays. © National Instruments Corporation VXI-AT2000/NI-VXI MS-DOS Getting Started...
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Page 25: Figure 2-4. Dma Channel Settings
Remember to make a corresponding change in the system software to enable the new DMA channels. Figure 2-4b displays the jumper position for selecting master-mode DMA Channel 7 and slave-mode DMA Channel 0. VXI-AT2000/NI-VXI MS-DOS Getting Started 2-10 © National Instruments Corporation... -
Page 26: Step 3. Install The At-Mxi Hardware
To protect both yourself and the computer from electrical hazards, the computer should remain off until you are finished installing the board. 2. Remove the top cover or access port to the PC AT I/O bus. © National Instruments Corporation 2-11 VXI-AT2000/NI-VXI MS-DOS Getting Started... -
Page 27: Figure 2-5. At-Mxi Installed In A Computer
9. Replace the computer cover. Figure 2-5 shows an AT-MXI installed in a PC AT with a MXIbus cable attached. Art not available in PDF version of document. Figure 2-5. AT-MXI Installed in a Computer VXI-AT2000/NI-VXI MS-DOS Getting Started 2-12 © National Instruments Corporation... -
Page 28: Step 4. Configure The Vxi-Mxi Hardware
VXI-MXI in the same mainframe. If this is the case, refer to the VXI-MXI User Manual that came with your additional VXI-MXI interface for more information. Art not available in PDF version of document. Figure 2-6. VXI-MXI Parts Locator Diagram © National Instruments Corporation 2-13 VXI-AT2000/NI-VXI MS-DOS Getting Started... -
Page 29: Figure 2-7. Vxi-Mxi With Intx Parts Locator Diagram
VXI-MXI modules with or without the INTX option. For more information about configuring modules with the INTX option, refer to the VXI-MXI User Manual. Art not available in PDF version of document. Figure 2-7. VXI-MXI with INTX Parts Locator Diagram VXI-AT2000/NI-VXI MS-DOS Getting Started 2-14 © National Instruments Corporation... -
Page 30: Front Panel Features
To configure the VXI-MXI as a Non-Slot 0 device, change slide switches S1 and S8 and jumper blocks W7 (labeled VME BTO Chain Position on the front panel), and W9 and W10 (labeled CLK10 Source Select on the front panel) as shown in Figure 2-9. © National Instruments Corporation 2-15 VXI-AT2000/NI-VXI MS-DOS Getting Started... -
Page 31: Figure 2-8. Vxibus Slot 0 Configuration
VME BTO Chain Position -------------------------------------------------------------------------------------------------------------------- CLK10 Source Select Drive CLK10 from onboard 10MHz, Slot 0 Drive CLK10 from SMB CLK10, Slot 0 Receive CLK10, Non-Slot 0 Figure 2-8. VXIbus Slot 0 Configuration VXI-AT2000/NI-VXI MS-DOS Getting Started 2-16 © National Instruments Corporation... -
Page 32: Figure 2-9. Vxibus Non-Slot 0 Configuration
VME BTO Chain Position -------------------------------------------------------------------------------------------------------------------- CLK10 Source Select Drive CLK10 from onboard 10MHz, Slot 0 Drive CLK10 from SMB CLK10, Slot 0 Receive CLK10, Non-Slot 0 Figure 2-9. VXIbus Non-Slot 0 Configuration © National Instruments Corporation 2-17 VXI-AT2000/NI-VXI MS-DOS Getting Started... -
Page 33: Vmebus Bto
Do not change the logical address of the VXI-MXI unless you are connecting multiple VXI-MXIs to the MXIbus. In this case, refer to the VXI-MXI User Manual that came with VXI-AT2000/NI-VXI MS-DOS Getting Started 2-18 © National Instruments Corporation... -
Page 34: Vmebus Request Level Selection
The VXI-MXI uses one of the four VMEbus request levels to request use of the VME Data Transfer Bus (DTB). The VXI-MXI requests use of the DTB whenever an external MXIbus © National Instruments Corporation 2-19 VXI-AT2000/NI-VXI MS-DOS Getting Started... -
Page 35: Figure 2-11. Vxi-Mxi Vmebus Requester Jumper Settings
• • • • • • • • • • VMEbus Request Level VMEbus Request Level c. Level 1 Requester d. Level 0 Requester Figure 2-11. VXI-MXI VMEbus Requester Jumper Settings VXI-AT2000/NI-VXI MS-DOS Getting Started 2-20 © National Instruments Corporation... -
Page 36: Step 5. Install The Vxi-Mxi Hardware
5. Tighten the retaining screws on the top and bottom edges of the front panel. 6. Check the installation. 7. Connect the cables as described in the following section before restoring power. 8. Replace or close any doors or covers to the mainframe. © National Instruments Corporation 2-21 VXI-AT2000/NI-VXI MS-DOS Getting Started... -
Page 37: Step 6. Connect The Mxibus Cable
There are two basic types of MXIbus cables. MXIbus cables can have either a single connector on each end, or a single connector on one cable end and a double connector on the other end. Your VXI-AT2000 kit comes standard with a cable with single connectors on each end. Nonpolarized Cables The cable with a single connector on each cable end is nonpolarized and may be installed with either end connected to either device. -
Page 38: Polarized Cables
Always turn on the mainframe first. Doing so makes it possible for the PC AT to access the VXI cards in the mainframe as soon as the PC AT starts up. © National Instruments Corporation 2-23 VXI-AT2000/NI-VXI MS-DOS Getting Started... -
Page 39: Ni-Vxi Software Installation And Configuration
MXI is automatically initialized at startup. The configuration settings can be modified using the VXIEDIT.EXE program. • RESMAN.EXE is the National Instruments multimainframe Resource Manager. RESMAN.EXE may be executed only after VXIINIT.EXE has been run. • VIC.EXE is an interactive control program that executes functions you enter from the keyboard. -
Page 40: Additional Programs And Files
VXILA.CFG contains the AT-MXI logical address configuration information. • VXIDEV.CFG contains the AT-MXI device-specific configuration information. • VXIMF.CFG, if present, contains information specific to the board manufacturer. • DVXI.CFG contains information for internal use by the driver. VXI-AT2000/NI-VXI MS-DOS Getting Started © National Instruments Corporation... - Page 41 NIVXIDOS.LIB is the NI-VXI Large Memory Model function library for the Borland C Language interface. • The C:\NIVXI\DOS\BORLANDC\EXAMPLES subdirectory contains various example programs that show how to use the NI-VXI software with Borland C. © National Instruments Corporation VXI-AT2000/NI-VXI MS-DOS Getting Started...
- Page 42 Also included are the following files containing system functions used in the generation of QuickBASIC libraries for version 4.5 (default) and version 7.0 (7F and 7N). • QB.OBJ • QBMEM.OBJ • QB1.LIB • QB1_7F.LIB • QB1_7N.LIB • QB2.LIB • B1_71F.LIB • B1_71N.LIB • B2_71.LIB VXI-AT2000/NI-VXI MS-DOS Getting Started © National Instruments Corporation...
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Page 43: Installing The Software
INSTALL changes the old file's extension to .BAK and keeps it for safety purposes. If you do not modify it, INSTALL creates a file in the NI-VXI directory with the changes it proposes you make to the file, and names it AUTOEXEC.VXI. © National Instruments Corporation VXI-AT2000/NI-VXI MS-DOS Getting Started... -
Page 44: Modifying The Autoexec.bat File
VXIbus and MXIbus operation. You can also use this program to configure interrupts, triggers, and the utility bus for single- or multiple-mainframe system configurations. For more details on how to use the VXIEDIT program, refer to the NI-VXI DOS Utilities Reference Manual. VXI-AT2000/NI-VXI MS-DOS Getting Started © National Instruments Corporation... -
Page 45: Running Vxiedit
Select Next and Previous to move among the three configuration editors. You can change the default settings to any value within the range shown to the right of each item by using the left and right arrow keys. © National Instruments Corporation VXI-AT2000/NI-VXI MS-DOS Getting Started... -
Page 46: Logical Address Configuration
You can exit the program at any time without saving any changes you have made by selecting Abort. Logical Address Configuration Figure 3-2 shows the Logical Address Configuration Editor (VXIla) menu. Figure 3-2. AT-MXI Logical Address Configuration Editor VXI-AT2000/NI-VXI MS-DOS Getting Started © National Instruments Corporation... -
Page 47: Table 3-1. Logical Address Configuration Characteristics
AT-MXI board. The NONE option can be selected with any jumper settings. Range = 0, 1, 2, 3, 5, 6, 7, NONE Note: This field is currently disabled. NONE (continues) © National Instruments Corporation VXI-AT2000/NI-VXI MS-DOS Getting Started... - Page 48 PC I/O space over the VXIbus. Range = 64 KB, 32 KB, 16 KB, 8 KB, 4 KB, 2 KB, 1 KB, 512 bytes, DISABLE DISABLE (continues) VXI-AT2000/NI-VXI MS-DOS Getting Started 3-10 © National Instruments Corporation...
- Page 49 0 KB Resource Manager Time in seconds that the Resource Manager Delay waits before accessing the configuration registers of any other device in the system. Range = 0 s to 65535 s © National Instruments Corporation 3-11 VXI-AT2000/NI-VXI MS-DOS Getting Started...
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Page 50: Bus Configuration
NI-VXI Software Installation and Configuration Chapter 3 Bus Configuration Figure 3-3 shows the Bus Configuration Editor (VXIbus) menu. Figure 3-3. AT-MXI Bus Configuration Editor VXI-AT2000/NI-VXI MS-DOS Getting Started 3-12 © National Instruments Corporation... -
Page 51: Table 3-2. Bus Configuration Characteristics
NONE option is selected, the same interrupt level as used for AT-MXI board interrupts is used for this interrupt. Range = 3, 4, 5, 6, 7, 9, 10, 11, 12, 14, 15, or NONE NONE © National Instruments Corporation 3-13 VXI-AT2000/NI-VXI MS-DOS Getting Started... -
Page 52: Device Configuration
NI-VXI Software Installation and Configuration Chapter 3 Device Configuration Figure 3-4 shows the Device Configuration Editor (VXIdev) menu. Figure 3-4. AT-MXI Device Configuration Editor VXI-AT2000/NI-VXI MS-DOS Getting Started 3-14 © National Instruments Corporation... -
Page 53: Exiting Vxiedit And Reinitializing The Hardware
If you changed any of the software configuration settings from the default, record the new setting on the VXI-AT2000 Hardware and Software Configuration Form in Appendix C. © National Instruments Corporation 3-15... -
Page 54: Developing Your Application Program
QBNIVXI.LIB is the file that contains the NI-VXI function library for the Microsoft QuickBASIC interface. This is used to generate QBNIVXI.QLB, the Microsoft QuickBASIC library. The corresponding include files *.INC are in the INCLUDE subdirectory in the distribution software. VXI-AT2000/NI-VXI MS-DOS Getting Started 3-16 © National Instruments Corporation... -
Page 55: Appendix A Specifications
Capability Code Description Can function as an AT Alternate Master LOCK Can lock the AT bus for indivisible transfers DMA16 Supports D08 or D16 DMA transfers Can interrupt on the PC AT bus © National Instruments Corporation VXI-AT2000/NI-VXI MS-DOS Getting Started... - Page 56 (339.72 mm by 121.92 mm) Connectors Single fully implemented MXIbus connector Slot Requirements Single AT (ISA) slot Reliability MTBF Contact Factory Requirements Memory space required 64 KB I/O space required 32 B VXI-AT2000/NI-VXI MS-DOS Getting Started © National Instruments Corporation...
- Page 57 840 ns Block Write 290 ns Block Write 590 ns Block Read 190 ns Block Read 590 ns Other Daisy-Chain Delay 120 ns (Passing GIN to GOUT or GOUT generation from System Controller) © National Instruments Corporation VXI-AT2000/NI-VXI MS-DOS Getting Started...
- Page 58 IACK daisy-chain driver VXIbus Capability Code Description TRIG+1 Supports TTLTRIG0:7 and ECLTRIG0:1 trigger lines and full protocol operations for each. The VXI-MXI may participate in only one protocol operation at a time. VXI-AT2000/NI-VXI MS-DOS Getting Started © National Instruments Corporation...
- Page 59 -40° to 85° C storage Airflow 3.5 liters/s for 10° rise Relative humidity 10% to 90% noncondensing operating; 0% to 95% noncondensing storage Emissions FCC Class A Safety Not applicable Shock and Vibration Not applicable © National Instruments Corporation VXI-AT2000/NI-VXI MS-DOS Getting Started...
- Page 60 381 ns Block Write 320 ns Block Write 238 ns Block Read 270 ns Block Read 238 ns Other Daisy-Chain Delay 120 ns (Passing GIN to GOUT or GOUT generation from System Controller) VXI-AT2000/NI-VXI MS-DOS Getting Started © National Instruments Corporation...
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Page 61: Appendix B Troubleshooting
MXI cable. If you are unable to resolve your problem, please fill out the appropriate forms in Appendix C, Customer Communication, and contact National Instruments. Problems with VXIINIT This section discusses what to do if running the VXIINIT initialization program results in an error message or causes the system to hang. -
Page 62: Vxiinit Could Not Find The At-Mxi
2. The NIVXIPATH variable may be pointing to the wrong directory. The path should be set in the AUTOEXEC.BAT file to point to the root directory of the NI-VXI files. By default, this directory is C:\NIVXI. VXI-AT2000/NI-VXI MS-DOS Getting Started © National Instruments Corporation... -
Page 63: Error Writing Log File
NONE, and this value cannot be modified. If you are using a version of the NI-VXI software for the AT-MXI prior to Version 3.10, ensure that this value is set to NONE. © National Instruments Corporation VXI-AT2000/NI-VXI MS-DOS Getting Started... -
Page 64: Problems With Resman
Master Window address range. The following examples show how to prevent various expanded-memory managers or emulators from using upper memory within the default Master Window address range of D000h to DFFFh. VXI-AT2000/NI-VXI MS-DOS Getting Started © National Instruments Corporation... -
Page 65: Problems With Mouse
The following symptoms can indicate a problem with the MXIbus cable. • RESMAN finds the AT-MXI board at Logical Address 0 but does not detect the VXI/VME chassis. • RESMAN previously worked, but now produces errors. © National Instruments Corporation VXI-AT2000/NI-VXI MS-DOS Getting Started... - Page 66 AT-MXI and the VXI-MXI are set accordingly. 3. If the cabling problem is not apparent, try another MXIbus cable if you have one available. If this solves the problem, contact National Instruments for repair information. VXI-AT2000/NI-VXI MS-DOS Getting Started...
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Page 67: Appendix C Customer Communication
Filling out a copy of the Technical Support Form before contacting National Instruments helps us help you better and faster. National Instruments provides comprehensive technical assistance around the world. In the U.S. and Canada, applications engineers are available Monday through Friday from 8:00 a.m. to 6:00 p.m. - Page 68 National Instruments for technical support helps our applications engineers answer your questions more efficiently. If you are using any National Instruments hardware or software products related to this problem, include the configuration forms from their user manuals. Use additional pages if necessary.
- Page 69 Completing this form accurately before contacting National Instruments for technical support helps our applications engineers answer your questions more efficiently.
- Page 70 • VXI-MXI Installed in Slot 0? __________________________________________________ • VXI-MXI Logical Address __________________________________________________ • VXI-MXI VMEbus Request Level __________________________________________________ • VXI-MXI Hardware Revision __________________________________________________ • AT-MXI Hardware Revision __________________________________________________ Other Products • Computer Make and Model __________________________________________________ • Microprocessor __________________________________________________ • Clock Frequency (Bus and Microprocessor) __________________________________________________ •...
- Page 71 Documentation Comment Form National Instruments encourages you to comment on the documentation supplied with our products. This information helps us provide quality products to meet your needs. ™ Title: Getting Started with Your VXI-AT2000 and the NI-VXI Software for MS-DOS...
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Page 72: Glossary
Valid numbers for n are 16, 24, and 32. In VME/VXI, because there are six address modifiers, there are 64 possible address spaces. © National Instruments Corporation Glossary-1 VXI-AT2000/NI-VXI MS-DOS Getting Started... - Page 73 8 ns. CMOS Complementary Metal Oxide Semiconductor; a process used in making chips. Commander A Message-Based device which is also a bus master and can control one or more Servants. VXI-AT2000/NI-VXI MS-DOS Getting Started Glossary-2 © National Instruments Corporation...
- Page 74 A MXIbus master that will not arbitrate for the MXIbus after releasing it until it detects the bus request signal inactive. This ensures that all requesting devices will be granted use of the bus. © National Instruments Corporation Glossary-3 VXI-AT2000/NI-VXI MS-DOS Getting Started...
- Page 75 Interrupters and responds to those requests by requesting status and identify information. interrupt level The relative priority at which a device can interrupt. INTX Interrupt Timing and Extension IRQ* Interrupt signal Industry Standard Architecture 1,024; kilobytes of memory VXI-AT2000/NI-VXI MS-DOS Getting Started Glossary-4 © National Instruments Corporation...
- Page 76 Controller cycle timeout responsibility. Always the first device in the MXIbus daisy- chain. NI-VXI The National Instruments bus interface software for VME/VXIbus systems. Non-Slot 0 device A device configured for installation in any slot in a VXIbus mainframe other than Slot 0. Installing such a device into Slot 0 can damage the device, the VXIbus backplane, or both.
- Page 77 Register-Based devices are typically controlled by Message-Based devices via device-dependent register reads and writes. RESMAN The name of the National Instruments Resource Manager in NI-VXI bus interface software. See Resource Manager. Resource Manager A Message-Based Commander located at Logical Address 0, which...
- Page 78 Word Serial The simplest required communication protocol supported by Message- Protocol Based devices in the VXIbus system. It utilizes the A16 communication registers to transfer data using a simple polling handshake method. © National Instruments Corporation Glossary-7 VXI-AT2000/NI-VXI MS-DOS Getting Started...