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General Information
❏One parallel port
❏A 16/A24/A32/D8/D16/D32/D64 VMEbus master/slave interface
❏128KB of static RAM (with optional battery backup), and VMEbus system controller.
The I/O on the MVME177 is connected to the VMEbus P2 connector. The main board is connected through a P2 transition board and cables to the transition boards. The MVME177 supports the following transition boards:
❏
❏
❏MVME712M
❏MVME712A
❏MVME712AM
❏MVME712B
(referred to in this manual as MVME712x, unless separately specified).
The MVME712x transition boards provide configuration headers and industry standard connectors for the I/O devices.
The VMEbus interface is provided by an ASIC called the
VMEchip2. The VMEchip2 includes:
❏Two tick timers
❏A watchdog timer
❏Programmable map decoders for the master and slave interfaces
❏VMEbus to/from local bus DMA controller
❏VMEbus to/from local bus