VMIC’s VMIVME-7740 is a complete Pentium III processor-based computer with the additional benefits of single Eurocard construction and full compatibility with the VMEbus Specification Rev. C.1. The VMIVME-7740, with advanced VMEbus interface and RAM that is dual-ported to the VMEbus, is ideal for multiprocessor applications.

　　The single CPU board functions as a standard PC/AT, executing a PC/AT-type power-on self-test, then boots up MS-DOS, Windows 95, Windows NT, or any other PC compatible operating system. The standard PC features of the VMIVME-7740 are discussed in Chapter 3 of this manual.

　　The VMIVME-7740 also operates as a VMEbus controller and interacts with other VMEbus modules via the on-board PCI-to-VMEbus bridge and the Endian conversion hardware.

　　The VMIVME-7740 may be accessed as a VMEbus slave board. The VMEbus functions are available by programming the VMIVME-7740’s PCI-to-VMEbus bridge according to the references defined in this volume and/or in the second volume dedicated to the optional PCI-to-VMEbus interface board titled: VMIVME-7740 Tundra Universe II™-Based VMEbus Interface Product Manual (document No. 500-007740-001).

　　Throughout this manual, all references to the Universe II refer to the Universe IIB.

　　The VMIVME-7740 programmer may quickly and easily control all the VMEbus functions simply by linking to a library of VMEbus interrupt and control functions. This library is available with VMIC’s VMISFT-9420 IOWorks Access software for Windows NT users.

　　The VMIVME-7740 also provides capabilities beyond the features of a typical PC/AT-compatible SBC including general-purpose timers, a programmable Watchdog Timer, a bootable flash disk system, and nonvolatile SRAM. These features make the unit ideal for embedded applications. These nonstandard PC/AT functions are discussed in Chapter 4 of this manual.

　　Organization of the Manual

　　This manual is composed of the following chapters and appendices:

　　Chapter 1 - VMIVME-7740 Features and Options describes the features of the base unit followed by descriptions of the associated features of the unit in operation on a VMEbus.

　　Chapter 2 - Installation and Setup describes unpacking, inspection, hardware jumper settings, connector definitions, installation, system setup, and operation of the VMIVME-7740.

　　Chapter 3 - PC/AT Functions describes the unit design in terms of the standard PC memory and I/O maps, along with the standard interrupt architecture

　　Chapter 4 - Embedded PC/RTOS Features describes the unit features that are beyond standard PC/AT functions.

　　Chapter 5 - Maintenance provides information relative to the care and maintenance of the unit

　　Appendix A - Connector Pinouts illustrates and defines the connectors included in the unit’s I/O ports

　　Appendix B - System Driver Software includes detailed instructions for installation of the drivers during installation of Windows 95, 98, 2000, or Windows NT (Version 4.0) operating systems.

　　Appendix C - Phoenix BIOS describes the menus and options associated with the Phoenix BIOS.

　　Appendix D - LANWorks BIOS describes the menus and options associated with the LANWorks BIOS.

　　Appendix D - Device Configuration: I/O and Interrupt Control provides the user with the information needed to develop custom applications such as the revision of the current BIOS configuration to a user-specific configuration.

　　Appendix E - Sample C Software provides a library of sample code the programmers may utilize to build the required application software for their system.

　　References

　　VMEbus Features

　　In addition to its PC/AT functions, the VMIVME-7740 has the following VMEbus features:

　　• Single-slot, 6U height VMEbus board

　　• Complete six-line Address Modifier (AM-Code) programmability

　　• VME data interface with separate hardware byte/word swapping for master and slave accesses

　　• Support for VME64 multiplexed MBLT 64-bit VMEbus block transfers

　　• User-configured interrupter

　　• User-configured interrupt handler

　　• System Controller mode with programmable VMEbus arbiter (PRI, SGL, and RRS modes are supported)

　　• VMEbus BERR bus error timer (software programmable)

　　• Slave access from the VMEbus to local RAM and mailbox registers

　　• Full-featured programmable VMEbus requester (ROR, RWD, and BCAP modes are supported)

　　• System Controller autodetection

　　• Complete VMEbus master access through five separate Protected-mode memory windows

　　Figure 1-2 illustrates the VMIVME-7740 functions in a typical VMEbus system. The VMIVME-7740 is a versatile single-board solution for VMEbus control with familiar PC/AT operation.

　　The VMIVME-7740 VMEbus interface is provided by the PCI-to-VMEbus bridge built around the Tundra Semiconductor Corporation Universe II VMEbus interface chip. The Universe II provides a reliable high-performance 64-bit VMEbus-to-PCI interface in one design. The functions and programming of the Universe-based VMEbus interface are addressed in detail in a separate associated manual titled: VMIVME-7740 Tundra Universe II Based VMEbus Interface Product Manual (500-657740-001).

　　VMIVME-7740 Product Options

　　VMIC’s VMIVME-7740 is built around three fundamental hardware configurations. These involve processor performance, the Flash Disk, and SDRAM memory size. These options are subject to change based on emerging technologies and availability of vendor configurations.

　　The options and current details available with the VMIVME-7740 are defined in the device specification sheet available from your VMIC representative.

　　Installation

　　The VMIVME-7740 conforms to the VMEbus physical specification for a 6U dual Eurocard (dual height). It can be plugged directly into any standard chassis accepting this type of board.

　　The following steps describe the VMIC-recommended method for VMIVME-7740 installation and power-up:

　　1. Make sure power to the equipment is off.

　　2. Choose chassis slot. The VMIVME-7740 must be attached to a dual P1/P2 VMEbus backplane.

　　If the VMIVME-7740 is to be the VMEbus system controller, choose the first VMEbus slot. If a different board is the VMEbus system controller, choose any slot except slot one. The VMIVME-7740 does not require jumpers for enabling/disabling the system controller function.

　　3. Insert the VMIVME-7740 and its attached expansion modules into the chosen VMEbus chassis slot (expansion modules should fill the slots immediately adjacent to the VMIVME-7740). While ensuring that the boards are properly aligned and oriented in the supporting board guides, slide the boards smoothly forward against the mating connector until firmly seated.

　　4. Connect all needed peripherals to the front panel. Each connector is clearly labeled on the front panel, and detailed pinouts are in Appendix A. Minimally, a keyboard and a monitor are required if the user has not previously configured the system.

　　5. Apply power to the system. Several messages are displayed on the screen, including names, versions, and copyright dates for the various BIOS modules on the VMIVME-7740.

　　6. The VMIVME-7740 features an optional Flash Disk on the board. Refer to Chapter 4 for set up details.7. If an external drive module is installed, the BIOS Setup program must be run to configure the drive types. See Appendix C to properly configure the system.

　　8. If a drive module is present, install the operating system according to the manufacturer’s instructions.

　　See Appendix B for instructions on installing VMIVME-7740 peripheral driver software during operating system installation.

　　BIOS Setup

　　The VMIVME-7740 has an on-board BIOS Setup program that controls many configuration options. These options are saved in a special nonvolatile, battery-backed memory chip and are collectively referred to as the board’s “CMOS configuration.” The CMOS configuration controls many details concerning the behavior of the hardware from the moment power is applied.

　　The VMIVME-7740 is shipped from the factory with no hard drives configured in CMOS. The BIOS Setup program must be run to configure the specific drives attached.

　　Details of the VMIVME-7740 BIOS setup program are included in Appendix C.

　　Front Panel Connectors

　　The front panel connections, including connector pinouts and orientation, for the VMIVME-7740 are defined in detail in Appendix A.

　　PMC Expansion Site Connectors

　　The VMIVME-7740 supplies the PMC expansion site connector for adding a PMC expansion board. This expansion capability allows third-party devices to be used with the VMIVME-7740.

　　Physical Memory

　　The VMIVME-7740 provides Synchronous DRAM (SDRAM) as on-board system memory. Memory can be accessed as bytes, words, or longwords.

　　All RAM on the VMIVME-7740 is dual-ported to the VMEbus through the PCI-to-VME bridge. The memory is addressable by the local processor, as well as the VMEbus slave interface by another VMEbus master. Caution must be used when sharing memory between the local processor and the VMEbus to prevent a VMEbus master from overwriting the local processor’s operating system.

　　The VMIVME-7740 includes the system BIOS, video BIOS, and LANWorks BIOS in a single flash memory device.

　　The VMIVME-7740 memory includes 32 Kbyte of non-volatile static RAM (NVRAM) addressed at $D8000 to $DFFFF. All but the first 24 bytes are accessible. Bytes $D8000 - $D800D are used by the Watchdog controller and include the System Command Register (COMM), the VME BERR Address Register (VBAR), the VME BERR Address Modifier Register (VBAMR), and the Board ID Register (BID). The System registers are explained in Volume II of this manual set. The NVRAM can be accessed by the CPU at anytime, and can be used to store system data that must not be lost during power-off conditions (Bytes $D800E - $D8017 are the System Registers).

　　Memory and Port Maps

　　Memory Map

　　The memory map for the VMIVME-7740 is shown in Table 3-1. All systems share this same memory map, although a VMIVME-7740 with less than the full 512 Mbyte of SDRAM does not fill the entire space reserved for On-Board Extended Memory

　　I/O Port Map

　　The Pentium III processor-based SBC includes special input/output instructions that access I/O peripherals residing in I/O addressing space (separate and distinct from memory addressing space). Locations in I/O address space are referred to as ports. When the CPU decodes and executes an I/O instruction, it produces a 16-bit I/O address on lines A00 to A15 and identifies the I/O cycle to the processor’s M/I/O control line. Thus, the CPU includes an independent 64Kbyte I/O address space, which is accessible as bytes, words, or longwords.

　　Standard PC/AT hardware circuitry reserves only 1,024 bytes of I/O addressing space from I/O $000 to $3FF for peripherals. All standard PC I/O peripherals such as serial and parallel ports, hard and floppy drive controllers, video system, real-time clock, system timers, and interrupt controllers are addressed in this region of I/O space. The BIOS initializes and configures all these registers properly; adjusting these I/O ports directly is not normally necessary.

VME-7740_1_Rev_A.pdf
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