Motorola MVME162P-242, Инструкция по установке и эксплуатации

Страница: 43 / 134

Installation Instructions
http://www.motorola.com/computer/literature 1-25
1
– Note that some cables are not provided with the MVME162P2
and must be made or purchased by the user. (Motorola
recommends shielded cable for all peripheral connections to
minimize radiation.)
8. Connect the peripheral(s) to the cable(s).
9. Install any other required VMEmodules in the system.
10. Replace the chassis cover.
11. Connect the power cable to the AC power source and turn the
equipment power ON.
System Considerations
The MVME162P2 draws power from VMEbus backplane connectors P1
and P2. 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
MVME162P2 may not operate properly without its main board connected
to VMEbus backplane connectors P1 and P2.
Whether the MVME162P2 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
the VMEchip2 chapter of the Programmer’s Reference Guide. D8 and/or
D16 devices in the system must be handled by the MC680x0/MC68LC0x0
software. For specifics, refer to the memory maps in the Programmer’s
Reference Guide.
The MVME162P2 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 MVME162Bug firmware. This may be changed via
software to any other base address. Refer to the Programmer’s Reference
Guide for more information.
If the MVME162P2 tries to access offboard resources in a nonexistent
location and is not system controller, and if the system does not have a
global bus timeout, the MVME162P2 waits forever for the VMEbus cycle
to complete. This will cause the system to lock up. There is only one