The Abaco Systems / VMIC VMIVME-7750-440000 is a passively cooled VME single board computer built on the Intel 815E chipset and powered by a Pentium III processor up to 1.26 GHz. It operates as a system controller or peripheral CPU in multi-CPU VMEbus systems, compliant with VME Specification Rev. C.1 and housed in a single-slot Eurocard form factor.
Technical Specifications
Processor & Chipset
• Intel Pentium III processor up to 1.26 GHz with 512 Kbyte on-die L2 cache (1.26 GHz variant)
• 32-bit addressing, 64-bit data bus, superscalar architecture (three instructions per clock cycle)
• Dynamic branch prediction, separate instruction/data caches, MMX technology support
• Intel 815E chipset with 133 MHz front-side bus
Memory
• Up to 512 Mbyte PC133 SDRAM via single 144-pin SODIMM, dual-ported to VMEbus
• 256 Kbyte advanced transfer cache (processors to 1 GHz); 512 Kbyte (1.26 GHz)
• System and video BIOS in reprogrammable flash memory
Graphics
• Integrated AGP adapter via Intel 815E chipset
• 4 Mbyte external synchronous DRAM cache, 64-bit data interface
• Maximum resolution: 1,600 x 1,200 x 256 colors (single view mode)
Storage & I/O
• Ultra ATA IDE interface supporting CompactFlash up to 1 Gbyte
• BIOS-selectable CompactFlash boot capability
• Two Intel Ethernet controllers: 82559 and ICH2-integrated
• Dual 10BaseT/100BaseTX RJ45 connectors with NetWare/TCP/IP/RPL remote boot support
VMEbus Interface
• P1 (standard VME) and P2 (VME64) connectors
• BLT32/BLT64, A32/D32, A24/D32, A16/D32 master/slave support
• Programmable bus request (BR3-0), interrupt levels (IRQ7-1, D8O)
• Arbiter modes: SGL, PRI, RRS
• Programmable bus timeout: 4 to 1,024 µs
• Transparent PCI-to-VME bridge
Expansion
• One PMC site: 5V signaling, Type 1/2, 32-bit PCI @ 33 MHz maximum
– Key Features
• Passive cooling design eliminates fan maintenance and heat dissipation concerns
• Dual Ethernet interfaces enable redundant network connectivity and remote boot capability
• Flexible memory configuration up to 512 Mbyte with SODIMM accessibility
• Integrated graphics controller eliminates need for separate video adapter
• PMC expansion slot extends functionality via mezzanine cards
– Typical Applications
• Multi-CPU VMEbus system controller roles
• Industrial embedded control and data acquisition
• Real-time process monitoring in ruggedized environments
• VME chassis-based instrumentation platforms
– Compatibility & Integration
The board maintains full VME Specification Rev. C.1 compliance, supporting both standard and VME64 connectors. The PCI-to-VME bridge enables transparent communication between PCI peripherals and VME slaves. Remote LAN booting via BootWare supports legacy network protocols (NetWare, TCP/IP, RPL), facilitating deployment in distributed systems.
