GE VMIVME-7807 Single Board Computer

The GE Fanuc VMIVME-7807, also cataloged as the VMIVME-7807 Single Board Computer, operates as a dedicated hardware component for high-performance processor execution within VMEbus architecture networks. The processing hardware provides direct physical and electrical execution of instruction logic to handle complex calculations and real-time control algorithms. It decodes bus protocols at the silicon tier to orchestrate peripheral subsystem operations across a standardized parallel backplane layout.

Hardware Specifications

Processor Backplane Integration & Determinism

• Backplane Bus Communication Velocity The system features a Universe II VME-to-PCI bridge controller designed to regulate data transmission speeds across the parallel chassis. This interface layer maps local host processing addresses directly into the VMEbus architecture, matching memory cycles with downstream I/O frames to maintain sub-millisecond updates without bus contention bottlenecks.
• Firmware Flash Compatibility The architecture incorporates non-volatile flash memory components dedicated to storing real-time operating system (RTOS) kernels such as VxWorks or Linux. This onboard storage layout matches fixed base memory maps during the boot cycle, ensuring immediate code execution without relying on rotating media or external network load registers.

Frequently Asked Questions

Q: What diagnostic state or backplane error registers trigger if a peripheral card fails to acknowledge a data transfer from the VMIVME-7807?

A: The onboard system controller asserts a VMEbus BERR (Bus Error) line if a slave device drops responses during a fixed cycle window. This event forces a non-maskable hardware interrupt to the Intel Pentium M processor, halting active program execution to prevent data corruption and lighting the red fault LED on the front faceplate.

Q: Can this VME single board computer be extracted from the chassis slot while backplane power remains active?

A: No, the module does not support hot-swapping under live load. Because the interface uses high-density multi-pin DIN backplane plugs, removing or inserting the card while the +5 VDC and +12 VDC bus lines are energized will cause inductive voltage arcs, distort parallel trace data frames, and cause permanent hardware failure within the bus transceivers.