® ® RadiSys EPC-8 Highly integrated Intel486™-based VMEbus Embedded CPU System Overview Two-slot version of EPC-8 VMEbus CPU module The RadiSys EPC-8 VMEbus CPU seven VMEbus interrupts EPC-8 Feature Summary: module is a high-performance Intel486- – Full slot-1 controller • High-performance Intel486 DX2 based PC designed for a variety of functionality with four-level processor running at 50 or 66MHz embedded applications, complete with priority arbitration Single-slot VMEbus (6U) form factor • Super VGA and Ethernet on a single On-board byte-swapping hardware • Local bus Super VGA graphics • board. The integrated module is well- controller suited for both networked and standalone On-board Ethernet controller • implementations. Orderable Options Up to 16MB DRAM • • 4MB, 8MB or 16MB DRAM • Two slot version with built-in slots for adding EXM modules • 2MB flash memory with 128KB of battery backed SRAM Optional 128KB of memory-mapped • SRAM and 2MB flash memory • Expansion capability using EXM expansion interface and EXM modules • Phoenix BIOS RS-232 DTE serial port (COM1) • • Parallel port (LPT1) RS-422/485 port (COM2) • PC/AT-compatible keyboard interface • • Watchdog timer Full 32-bit VMEbus master interface, • including: – A32/A24/A16:D32/D16/D08 master capabilities – Generation and receipt of all The EPC-8 module offers two CPU configurations based on Technical Overview Intel’s family of powerful 32-bit processors. The module is available with the Intel486 DX2 processor running at either HARDWARE ARCHITECTURE 50MHz or 66MHz. Each processor includes on-chip cache The computing functions of the EPC-8 are performed by memory and a math coprocessor. the 32-bit Intel486 microprocessor, with on-chip math coprocessor and four-way set associative cache memory. The CPU module delivers 32-bit, workstation-level The processor is connected to on-board DRAM through a performance for off-the-shelf PC-based operating systems 64-bit wide high-performance local bus providing zero- including DOS, Windows and OS/2. wait-state performance. The EPC-8 is fully software- compatible with other 386/486 family CPUs. DRAM SUBSYSTEM On-board memory consists of 4, 8 or 16MB of DRAM. In addition to its 32-bit VMEbus interface, the EPC-8 uses This memory is not accessible from the VMEbus. Hardware a 16-bit PC/AT-like expansion bus (EXM) to facilitate local memory mapping of the DRAM enables the use of 640KB embedded PC expansion without interference to the of DOS conventional memory and from 3MB to 15MB of VMEbus. The standard configuration of the EPC-8 is a extended memory, depending upon the EPC-8 DRAM single-slot form factor, but the module is also available as a configuration. two-slot version with built-in support for two EXM expansion modules. FLASH AND SRAM The flash memory option for the EPC-8 module provides The EPC-8’s flash BIOS and on-board I/O controllers 2MB of flash memory. The EPC-8 allows booting directly connect through the internal I/O bus, providing AT- from flash memory in systems without hard disk drives. compatible addressing with full DMA capability. Software is provided to enable DOS users to use flash at a read-only DOS disk. For other operating systems, the flash The modular expandability of the EXM interface makes it is I/O-mapped. easy to enhance the EPC-8 with peripherals. RadiSys expansion modules are available in various categories of Included with the flash option is 128KB of battery-backed functionality, including the following: SRAM. This SRAM is memory-mapped at the top of the EPC-8’s memory range. With the flash/SRAM orderable • Mass storage modules, for example, solid-state options, small diskless systems can be built. disk modules and IDE, floppy disk and SCSI controllers • I/O modules, including digital, digital-to-analog and analog-to-digital modules • Communication modules, such as serial and parallel port modules, modem interface modules and Intel486 DX2 @ 66 MHz PCMCIA controllers Video 4, 8 or 16MB or IntelDX4 @ 100 MHz DRAM Many third-party add-in card vendors also design and market additional EXM RS232 32 bit local bus modules. 10baseT RS485 Parallel I/O AT Controller BIOS Ethernet To provide the connectivity for local EXM SRAM Port Port expansion, a RadiSys EXP-BP subplane is required with the EPC-8. The subplane 16 bit EXM Interface connects the EPC to the VMEbus and to keyboard, Flash RTC the EXM Expansion Interface simultaneously in a highly reliable 8 bit X bus configuration that requires no ribbon VME/VXI regs VME byte swap and arbitration cables. The subplane assembly installs on top of standard VMEbus J1 and J2 backplane connectors. The subplane 32 bit VMEbus draws power from the VMEbus but does EPC-8 CPU Module Block Diagram not affect VMEbus traffic. CPU cycles) are fully supported, allowing transparent and reliable semaphores. The EPC-8 contains a full set of VMEbus system controller functions, the ability to generate and receive all seven VMEbus interrupt levels, and a subset of the VMEbus Extensions for Instrumentation (VXIbus). The VMEbus configuration registers can be accessed directly or, more BIOS conveniently, by way of RadiSys EPConnect development The EPC-8 module uses a standard PC-compatible BIOS and run-time software. VMEbus controller functions licensed from Phoenix and optimized by RadiSys include round-robin or four-level priority bus arbitration, specifically for the EPC-8. The BIOS program runs IACK daisy-chain driving, SYSCLK generation, and bus automatically at system startup from a 128KB flash BIOS address time-out detection. The system controller provides EPROM. System configuration parameters are stored in both ROR (release-on-request) and RONR (release-on-no- battery-backed CMOS RAM. request) bus release mechanisms. Slot-1 control functions can be disabled via configuration jumper. The VXIbus Also included on the EPC-8 is 32KB of VGA BIOS. extensions provide well-defined multiprocessor communication channels and protocols and allow dynamic SUPER VGA CONTROLLER system configuration. For optimal graphics performance, the EPC-8 incorporates VMEBUS ADDRESSING a Cirrus Logic CL-GD5428 video chip and 512KB of video Special windowing hardware on the EPC-8 allows the DRAM. Resolutions of 640 x 480 (16 or 256 colors), 800 Intel486 processor to access all three (A32, A24 and A16) x 600 (16 or 256 colors) and 1024 x 768 (16 colors) are VMEbus address spaces from within the DOS/Windows supported. The Super VGA controller runs on the local bus and OS/2 environment. The windowing hardware provides and requires no mezzanine boards. A standard female programmable registers that add high order bits to the DB15 connector is included on the front panel. processor’s basic memory address. The VMEbus address ETHERNET CONTROLLER range is viewed as a 64KB logical page that can be accessed through a block of addressable memory known as The EPC-8 incorporates an Ethernet controller on-board. the page frame. This page frame is located in the reserved The Ethernet controller is compatible with Novell NE2000, area (E000:xxxxh) above the conventional DOS 640KB NE2000+ and Western Digital Modes. A 10baseT memory boundary. The VMEbus can also be accessed connector is provided on the front panel. through protected mode addressing. I/O PORTS The VMEbus mapping registers can be directly The EPC-8 CPU module includes standard PC I/O programmed with simple I/O writes. interfaces on its front panel: an RS-232 DTE serial port (COM1) with 9-pin male D-shell connector; a parallel As a VMEbus master, the processor can generate D32, D16 printer port (LPT1) with 25-pin female D-shell connector; and D08 data transfers in the A32, A24, and A16 address an RS-422/485 port; and a PC/AT-compatible keyboard spaces. In addition, on-board byte-swapping hardware interface with IBM PS/2-style 6-pin mini-DIN connector. enables data conversion between big endian (Motorola Also included is a standard PC/AT speaker. format) and little endian (Intel format) byte orderings to WATCHDOG TIMER facilitate high-speed data sharing. The EPC-8 includes a watchdog timer that can signal a watchdog timer event upon overflow. This feature can be EPCONNECT SOFTWARE enabled or disabled by the application software. It is user- To facilitate development, RadiSys offers EPConnect™, a defined to cause either an interrupt or a system reset. software environment that reduces the time required to develop and integrate VMEbus systems based on RadiSys VMEBUS INTERFACE EPCs. EPConnect includes development, debug and run- A full VMEbus master interface is provided for time software packages that integrate seamlessly with the communication with I/O, memory and other processor underlying operating system including, DOS, Windows and boards. Memory-locking operations (read-modify-write OS/2. ENVIRONMENTALS CHARACTERISTIC VALUE H O M E P A G Temperature operating 0° to 60°C storage -40° to 85°C Humidity operating 5 to 95% (non-condensing) storage 5 to 95% (non-condensing) Altitude operating 0 to 10,000 ft. (3000 m) storage 0 to 40,000 ft. (12,000 m) Vibration operating 2.5 g acceleration over 5 to 2000 Hz sine wave (P-P), 1 oct/min. sine sweep storage 5 g acceleration over 5 to 2000 Hz sine wave (P-P), 1 oct/min. sine sweep Shock operating 30 g, 11 msec duration, half-sine shock pulse storage 50 g, 11 msec duration, half-sine shock pulse POWERer Typical +5V @ 5.1A, +12V @ 100mA, -12V @ 100mA Maximum +5V @ 6.2A, +12V @ 100mA, -12V @ 100mA RadiSys Corporation 15025 SW Koll Parkway Beaverton, OR 97006 Phone: (503) 646-1800 Toll-Free: (800) 950-0044 RadiSys and EPC are registered trademarks of RadiSys Corp. IBM, PC/AT, PS/2, and OS/2 are trademarks FAX: (503) 646-1850 of International Business Machines Corp. Windows is a trademark of Microsoft Corp. Intel386 and Internet Email: info@radisys.com Intel486 are trademarks of Intel Corp. All other trademarks belong to their respective companies. Homepage Address: http://www.radisys.com E A D D R E S S : H T T P : / / W W W . R A D IS Y S . C O M