Table 4-2. Power-Up Sequence.
l Checksum any
ROMs
in
ROM
space. Report any bad or ignored ones. I
! Test rest of memory.
Set-up
bottom of memory. I
l Report any memory failures. J
!'nitiali28
bottom
of memory. I
lin
continuous
self-test
loop?
II--_y_e8_---l~J
Was
there a boot
ROM
l-
'I
checksum failure? I
no
1 yes
I
Require
key
press to I
continue at
own
risk. I
1
! Return to start of
self-test.
I
yes I
Was
there a boot
ROM
checksum failure?
11--.:.---.t1Require
key press to
continue at
own
risk.
I
Was
a failure detected?
no
yes
I
Put up final highest priority failure value
on
LEOs.
I
and sound of error code on keyboard beeper
if
one is present. I
l
Wait
1 minute before continuing. unless a key is pressed. I
1
End
of self test
72
Boot
Rom Functions
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