Power-Up Initialization Code
Overview
The power-up initialization code is executed when power is
applied to the VAXstation 4000 Model 90 workstation or any
time volatile console data structures are altered.
Power-Up
Initialization
Sequence
Table 2–1 describes the power-up initialization sequence.
Table 2–1 Power-Up Initialization Sequence
Stage
What the System Does
1
Tests enough memory to bring up the console for building console and device
structures.
2
Checks its configuration, identifies optional devices, and identifies the type
of monitor connected to the video slot.
3
Tests the TOY clock and the non-volatile RAM. If this test fails, the power-up
test stops.
4
Constructs the master configuration table (MCT), device configuration table
(DCT), driver descriptor, shared console interface area (SCIA), and a blank
page frame map.
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