Abaco Systems / VMIC VMIVME-HSD VMEbus Interface

The Abaco Systems (formerly VMIC) VMIVME-HSD is a VMEbus interface card that bridges VMEbus systems to Encore HSD and Inter-bus Link (IBL) devices. the card incorporates a Motorola 68430 DMA controller to enable 32-bit DMA transfers between VMEbus and Encore ecosystems. The VMIVME-HSD implements full VMEbus interrupter logic and provides interrupt signaling capabilities to the Encore HSD, supporting bidirectional communication and control.

Technical Specifications

• DMA Controller: Motorola 68430


• Data Transfer Width: 32-bit DMA Link


• Target Devices: Encore HSD Model 9132 and Encore Model 9136 Inter-bus Link (IBL)


• VMEbus Standards: ANSI/IEEE STD 1014-1987, IEC 821; compatible with VME64 and VME64x


• Block Transfer: Supports block transfer protocols for multiple data transfers with single address cycle


• VMEbus Connectors: P1 and P2 Eurocard configuration

Key Features

• VMEbus control logic manages transfers to and from the Encore HSD


• VMEbus interrupter implementation for interrupt-driven communication


• Interrupt signaling capability from VMEbus to Encore HSD


• 32-bit DMA architecture for efficient data movement


• Support for asynchronous bus operation and variable bus widths

Compatibility & Integration The VMIVME-HSD operates with Encore HSD Model 9132 and Encore Model 9136 Inter-bus Link systems. When deployed in Encore EF "master" mode, the VMEbus processor must support 32-bit transfers into short I/O address space; certain 68020-based CPU boards may not meet this requirement. The card follows standard VMEbus form factors, typically available in 3U and 6U sizes, and integrates into VMEbus backplanes supporting block transfer protocols and multiple data widths.

Typical Applications Designed for high-speed data acquisition and control applications requiring VMEbus-to-Encore system connectivity, including real-time embedded computing, industrial control, and distributed processing environments.