The Abaco Systems/VMIC VMIVME-5588DMA-010 is a high-speed Direct Memory Access fiber-optic reflective memory board for VMEbus systems. It enables transparent data sharing across up to 256 independent network nodes operating at 1.2 Gbaud serial data rate, delivering 29.5 Mbyte/s non-redundant or 14.8 Mbyte/s with redundant error suppression. The reflective memory architecture eliminates processor overhead during all network operations. Integrated interrupt capabilities allow any node to signal any other node or broadcast to all nodes with a single command.
Technical Specifications
Reflective Memory Network
• Maximum network nodes: 256
• Serial data rate: 1.2 Gbaud
• Data transfer rate (non-redundant): 29.5 Mbyte/s
• Data transfer rate (redundant mode): 14.8 Mbyte/s
• Error detection and redundant transmission mode for error suppression
• Zero processor overhead; processor-independent network operation
Connectivity
• Multimode fiber: Up to 1,000 feet (300 m)
• Single-mode fiber: Up to 10 km
• Coaxial cable: Up to 30 m
• Optional multimode/single-mode converters available
• Compatible with VMIVME-5599 automatic and VMIVME-5591 active fiber-optic bypass switches
On-Board Resources
• SDRAM: Configurable 256 Kbyte to 16 Mbyte
• Transmit and receive FIFOs for peak data rate buffering
• Direct Memory Access controller
• Form factor: Single-slot 6U VMEbus
Memory Access
• Support for A24:A32:D64:D32:D16:D8 addressing modes
– Key Features
• Software-transparent data transfers between all network nodes
• Any-to-any or broadcast interrupt generation across network
• Fiber-optic isolation for extended reach and noise immunity
• Dual transfer modes optimize throughput or reliability tradeoffs
• On-board FIFO management sustains peak serial rates without CPU intervention
– Typical Applications
Real-time distributed data acquisition, multi-node reflective memory networking, high-speed inter-processor communication in VME systems.
– Compatibility & Integration
Operating Systems
• Solaris 2.x, SGI IRIX 4.x/6.x, VxWorks, DEC UNIX 4.x, Windows NT
Driver Support
• VMIVME/SW-RFM1 drivers
• Software and network compatible with VMIVME-5588 and VMIVME-5578
