Motorola MVME187 User Manual

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Hardware Preparation and Installation
3
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.