Power-Up Initialization Code,
Continued
Table 2–1
(Continued) Power-Up Initialization Sequence
Stage
What the System Does
7
Test dispatcher tests the functional blocks of the system. This test displays
a blank ruler on the screen. The length of the ruler is dependent on the
devices in the system. The dispatcher runs the tests in the following order:
Non-Volatile RAM (NVR)
Color graphics (LCSPX, SPXg or SPXgt)
Serial line controller (DZ)
Cache memory (SCSI DMA RAM, OBIT RAM, BCACHE)
Memory configuration (MEM)
Floating point unit (FPU)
Interval timer (IT)
Miscellaneous system board (checksums, Ethernet ID ROM) (SYS)
Network controller (NI)
SCSI controller (SCSI)
Sound chip (AUD)
Option board (COMM)
Bus adapter logic
If an error occurs during testing, the dispatcher continues to test the
remaining devices until all tests are completed.
NOTE
If halts are enabled, the console prompt >>> displays.
If not, the system is autobooted using the default
device stored in the NVR or the Ethernet if no device is
specified.
2–4
