Installation manual

Board Installation Notes
Backplane Slot Assignment Charts
Each system chart lists the PCB slot assignments in order of descending priority. In the charts
A,B,C... indicates the preferred location for a specific board. An A is the most preferred location. An
a indicates that a board requires more than one slot if Memory, Frame Buffer, or other options are
installed. Multiple capital letters (AA, BBB...) indicate a board requires more than one slot. Boards
with multiple part numbers are shown with a footnote (Sun 3004 CPU 1) and are listed in tables after
each grouping of slot assignment charts.
Installing VMEbus Boards
Refer to the Backplane Slot Assignment Charts to determine where to install additional boards.1.
Move boards in the cardcage as required.2.
Configure backplane jumpers for BG3 and IACK. The IACK jumper for the last slot is not
present on some backplanes. It is not needed.
3.
Removing VMEbus Boards
Refer to the Backplane Slot Assignment Charts to determine if other boards in the cardcage
require repositioning.
1.
Configure backplane jumpers for BG3 and IACK.2.
Install an air restrictor and the external filler panel in any unused slot.3.
Sun-3/260 and Sun-4/260
Do not install an air restrictor in Slot 2.1.
Do not install non-memory board options in Slots 2 through 5 using the standard left to right
sequence. If possible, leave Slot 2 empty for system cooling.
2.
Sun 4100 CPU
The Sun 4100 CPU does not have a VMEbus slave interface. VMEbus boards requiring a slave
interface on the processor do not function with the Sun 4100 CPU (eg. Xylogics 451, Xylogics
472, Xylogics 7053).
1.
The Sun 4100 CPU has 28-bits of physical address space. Bit 27 is replicated out to Bit 31 in
A32D32 space.
2.
Sun4/I: Slot Assignment - Board Installation Notes
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