Abaco Systems / VMIC VMIVME-5588DMA-500 Enhanced High-Speed DMA Fiber-Optic 1.2 Gbaud Reflective Memory with Interrupts

The Abaco Systems / VMIC VMIVME-5588DMA-500 is a single-slot 6U VMEbus reflective memory board delivering high-speed, deterministic data sharing across distributed systems via fiber-optic interconnection. Operating at 1.2 Gbaud serial with throughput up to 29.5 Mbyte/s (standard mode) or 14.8 Mbyte/s (redundant error-suppression mode), this board supports network topologies spanning up to 256 nodes across distances from 30 m (twinax) to 10 km (single-mode fiber). An on-board DMA controller enables zero-processor-overhead broadcast writes from local SDRAM to all networked nodes, while integrated interrupt arbitration allows any node to signal any or all peer nodes with a single command.

Transmit and receive FIFOs optimize sustained throughput during peak data rates.

Technical Specifications

• Data Rate: 1.2 Gbaud serial; 29.5 Mbyte/s (standard), 14.8 Mbyte/s (redundant transfer)


• Memory: Configurable onboard SDRAM from 256 Kbyte to 16 Mbyte


• Network Architecture: Fiber-optic reflective memory; up to 256 nodes


• Interconnection Range: 30 m (twinax), 1,000 ft / ~300 m (multimode fiber), 10 km (single-mode fiber)


• Bus Access: A24:A32:D64:D32:D16:D8 memory addressing


• Form Factor: Single-slot 6U VMEbus

Key Features

• On-board DMA controller eliminates host processor overhead during network transfers


• Interrupt generation between any node pair or broadcast to all nodes


• Redundant transmission mode for error suppression in high-noise environments


• Error detection with automatic suppression capability


• Transmit/Receive FIFOs for peak-rate buffering


• Software-transparent data broadcast with no I/O overhead

Typical Applications Real-time systems requiring deterministic, low-latency multi-node data synchronization; distributed control architectures; high-bandwidth telemetry networks; systems demanding error suppression.

Compatibility & Integration Supported operating systems: Solaris 2.x, SGI IRIX 4.x/6.x, VxWorks, DEC UNIX 4.x, Windows NT. Driver software VMIVME/SW-RFM1 provided; VMISFT-9420 compatible with GE Fanuc VMEbus CPU boards. Optional accessories include automatic and active fiber-optic bypass switches.