Owner`s manual

Figure 4–2 shows the XMI configuration rules that apply to systems with
a T2019 power regulator module installed.
Slot E of the XMI must be filled for the system to operate. Slot E
may contain a processor or an I/O adapter, but not a memory
module. For systems with VAXBI buses, a DWMBx-A is typically in
this slot, to be close to a corresponding DWMBx/B in the VAXBI card
cage. Note that the VAX 6000 Model 500 supports the DWMBA only
when the H9657-CX kit is installed. Other Model 500 systems use the
DWMBB for communication with the VAXBI.
The T2019 module is installed in slot 2. Heat sinks on the module
protrude into the space allotted for slot 1. Do not insert the T2019
in any other slot.
By convention, install processor modules at slot 3 and proceed to the
left. A maximum of four processors can be installed when you upgrade
using the H9657-CX kit.
Memory modules can be placed in slots 3 through D. By convention
in Model 500 systems, memory modules are first placed at slot 9 and
then proceed to the right. Additional memory would then be installed
beginning at slot 10 and proceeding to the left to slot D.
No I/O adapters can be placed in slots 6, 7, 8, and 9.
Installing the H9657-CX Kit 4–5