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Hardware Preparation and Installation

Multiple Module Cage Configuration

Multiple MVME187s may be configured into a single VME card cage. In general, hardware multiprocessor features are supported.

GCSR Location Monitor Register

Other MPUs on the VMEbus can interrupt, disable, communicate with and determine the operational status of the RISC processor(s). One register of the GCSR set includes four bits which function as location monitors to allow one MVME187 processor to broadcast a signal to other MVME187 processors, if any. All eight GCSR registers are accessible from any local processor as well as from the VMEbus.

Ethernet LAN (+12 Vdc) Fuse

The MVME187 provides +12 Vdc power to the Ethernet LAN transceiver interface through a 1-amp fuse (F2) located on the MVME187. The +12V LED lights when +12 Vdc is available. The fuse is socketed and is located adjacent to diode CR1 near connector P1. If the Ethernet transceiver fails to operate, check the fuse. When using the MVME712M transition module, the yellow LED (DS1) on the MVME712M front panel lights when LAN power is available, indicating that the fuse is good.

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Motorola MVME187 manual Multiple Module Cage Configuration, Gcsr Location Monitor Register, Ethernet LAN +12 Vdc Fuse