RELIANCE 3RA2008U Adjustment control module

On the chassis backplane, remove the INTERRUPT ACKNOWLEDGE (IACK) and BUS GRANT (BG) jumpers from the header for the card slot occupied by the MVME172LX.Connect the appropriate cable(s) to the MVME172LX panel connectors for the EIA-232-D serial ports, SCSI port, and LAN Ethernet port. – Note that some cables are not provided with the MVME172LX and must be made or purchased by the user. (Motorola recommends shielded cable for all peripheral connections to minimize radiation.)Connect the peripheral(s) to the cable(s).Install any other required VMEmodules in the system.Replace the chassis cover.Connect the power cable to the AC power source and turn the equipment power ON.

System Considerations 

The MVME172LX draws power from both the P1 and the P2 connectors on the VMEbus backplane. P2 is also used for the upper 16 bits of data in 32-bit transfers, and for the upper 8 address lines in extended addressing mode. The MVME172LX may not operate properly without its main board connected to VMEbus backplane connectors P1 and P2. Whether the MVME172LX operates as a VMEbus master or as a VMEbus slave, it is configured for 32 bits of address and 32 bits of data (A32/D32). However, it handles A16 or A24 devices in the address ranges indicated in Chapter 3. D8 and/or D16 devices in the system must be handled by the MC68060/MC68LC060 software. Refer to the memory maps in the MVME172 VME Embedded Controller Programmer’s Reference Guide.

The MVME172LX contains 

shared onboard DRAM whose base address is software-selectable. Both the onboard processor and offboard VMEbus devices see this local DRAM at base physical address $00000000, as programmed by the MVME172Bug firmware. This may be changed via software to any other base address. Refer to the MVME172 VME Embedded Controller Programmer’s Reference Guide for more information.

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