The Abaco Systems/VMIC VMIVME-6015 is a quad-channel, multifunctional serial input/output board engineered for VMEbus systems. This double Eurocard module delivers four independent, full-duplex serial channels capable of supporting asynchronous and synchronous protocols at data rates from 0 to 1 Mbaud, making it suitable for diverse serial communication architectures in legacy avionic and industrial systems.
– Technical Specifications
Hardware Architecture
• Form Factor: Double Eurocard (VMEbus 6U)
• Bus Interface: VMEbus (A16:D8)
• Core Circuitry: Two MK68564 SIO dual-channel multifunctional peripheral circuits
• Serial Channels: Four independent, full-duplex channels
• Physical Interface: Four 25-pin subminiature D connectors
• Operating Temperature: -40°C to +85°C
Data Rate & Baud Configuration
• Maximum Data Rate: 0 to 1 Mbaud (synchronous or asynchronous)
• Programmable Baud Rate Generators: Four independent generators
• Character Length (Asynchronous): 5, 6, 7, or 8 bits/character
• Stop Bits (Asynchronous): 1, 1.5, or 2 stop bits
• Parity Options: Even, odd, or no parity
Protocol Support
The board handles asynchronous protocols, synchronous byte-oriented protocols (IBM Bisync), and synchronous bit-oriented protocols (HDLC, IBM SDLC). It accommodates interface standards including RS-232C, RS-423, RS-422A, and RS-485.
– Key Features
• CRC generation and checking in any synchronous mode
• Error detection: parity, overrun, and frame error detection
• Programmable interrupt capability per channel
• Modem control lines with general-purpose I/O repurposing capability
• Receive data registers: quadruple buffering
• Transmit registers: double buffering
• Break generation and detection
• Built-in self-test via loop mode activation in MK68564 circuits
– Typical Applications
Legacy serial communication interfaces, cassette and floppy disk emulation, synchronous data link protocols, and multi-protocol serial communication systems in VMEbus environments.
– Compatibility & Integration
Designed for VMEbus 6U Eurocard slots supporting A16:D8 addressing. Now obsolete and out of production; available only through surplus channels.
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