Kd32·Ab Cpu; M7135-Ya Oap - Digital Equipment VAXstation I Service Manual

SYSTEM CONFIGURATION
1. 2 KD32·AB CPU
The KD32-AB CPU comprises two quad-height modules: the M7135-YA
OAP (data path) module, and the M7136 MCT (memory controller)
module. For more information on the KD32-AB, see the MicroVAX I
CPU Technical Description, EK-KD32A-TD.
1.2.1 M713S·YA DAP
The OAP module (Part Number M7135-YA) is connected to the MCT
with a ribbon cable.
1.2.1.l Switches · As Figure 1-3 shows, the OAP contains two
sets of eight DIP switches and a single jumper. The SID register
switches are used by manufacturing and should not be changed.
Table 1-2 lists the Option switch functions and the normal
setting for the VAXstation 1.
The three LEDs display a binary error code that matches the error
code displayed in the segmented-LED display on the CPU insert
mounted in the Patch and Filter Panel assembly.
1.2.l.2 Microverify Jumper - This jumper determines the test
mode for Microverify. The jumper is factory-set to single-pass
mode {as shown in Figure 1-3). In the alternate jumper positon,
multipl~loop
mode, OAP Option Switch 2 {Table 1-2) must be in
the OFF (VTlOO compatible) position {also see the NOTE VTlOO
Mode, below).
NOTE - VTlOO Mode
If OAP Option switch 2 is set to the OFF
position, a VTlOO can be connected to the
terminal SLU and used as the console terminal.
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