Abaco Systems / VMIC VMIVME-9064/32-471 Intelligent I/O Controller

The Abaco Systems / VMIC VMIVME-9064/32-471 is an Intelligent I/O Controller for VMEbus systems that manages real-time data acquisition and control operations within distributed computing environments. Built on a Motorola 68040 processor architecture, it functions as a standalone system controller with full VMEbus arbitration and interrupt management capabilities. The controller communicates with external host computers via Abaco's Reflective Memory products using memory-mapped control windows and interrupt signaling, enabling efficient command processing and I/O data exchange without shared backplane residence.

Technical Specifications

• Processor: Motorola 68040 or compatible MVME143S-2 / MVME162-202 VMEbus single board computer with IIOC firmware


• DRAM: 16 MB shared DRAM, 32-bit wide, VMEbus accessible


• System Controller Functions: Four-level arbiter, system clock driver, interrupt acknowledge daisy chain driver, system reset driver, VMEbus clear driver


• Front Panel Controls: Run-and-halt LED, fall status LED, reset switch, abort switch


• VMEbus Support: Accommodates up to 15 total chassis (numbered 0–14)

Key Features

• Memory-mapped host interface simulates co-residence on same backplane despite physical separation


• Node-based control window and buffer allocation within shared RM allocation page


• Command list processing capability reduces runtime host interaction


• Integration with Abaco Reflective Memory products (VMIVME-5550, -5565, -5576, -5588)


• Optional 10/100 Mbit Ethernet interface for selected IIOC models


• High-density I/O module support within VMEbus architecture

Typical Applications

• Industrial automation systems requiring distributed I/O control


• Military and aerospace real-time data acquisition platforms


• Multi-chassis VMEbus deployments with centralized command processing

Compatibility & Integration The VMIVME-9064/32-471 functions as system controller when installed in slot 1 of the master chassis. It interfaces with Abaco Reflective Memory products for host communication and supports command-driven operation via memory-mapped protocol. Ethernet connectivity option available for network-based host interfaces.