The RadiSys EPC-5A is a 6U VMEbus-compliant embedded CPU module delivering PC/AT-compatible computing in a compact industrial form factor. Built around a 100 MHz Intel486 DX4 processor with on-chip math coprocessor and 16 KB cache, it supports up to 256 MB of dual-ported DRAM accessible from both PC and VME sides. The module integrates direct VMEbus communication across A32, A24, and A16 address spaces, making it ideal for distributed control and data acquisition systems requiring tight processor-to-chassis coupling.
Technical Specifications
• Processor: Intel486 DX4 at 100 MHz
• Math Co-Processor: On-chip
• Cache: 16 KB
• DRAM: Up to 256 MB, dual-ported (PC and VME accessible)
• BIOS: Award 486 with SCSI extensions
• Serial Ports: 2× 9-pin DTE (COM1, COM2)
• Parallel Port: 1× LPT1 (output only)
• Keyboard Interface: Supported
• Form Factor: 6U VMEbus
• Weight: 1.27 lbs
– Key Features
• VMEbus master/slave capability with A32, A24, and A16 address space support
• Expansion Module (EXM) interface—electrically equivalent to 16-bit PC/AT ISA bus
• Configurable peripheral expansion: serial (RS232/RS422), modem, Flash EPROM, timer/counter, PCMCIA, Ethernet
• Mass storage via EXP-MS/MX module or SCSI/IDE-equipped EXMs
• Single 8-bit PC add-in card support via EXP-AM adapter
• Video output through dedicated EXM module
– Compatibility & Integration
Full PC/AT compatibility ensures software portability while VMEbus integration enables deployment in existing crate-based systems. The dual-ported DRAM architecture eliminates coherency bottlenecks in mixed processor environments. Award BIOS with SCSI extensions streamlines mass storage integration.
