Table 4-2. Power-Up Sequence - HP 330 Service Information Manual

122
Table 4-2. Power-Up Sequence.
I
Checksum any ROMs in ROM space. Repart any bad or ignored onel.
I
I Telt rest of memory. Set-up bottom of memory. I
I Report ony memory failures.
I
Iinitialize battom of memory.
I
I
L
l:n...:co:n~ti:nu~o::u:s~se~lf.::te::s:.t ~lo:a~p~?JIr--_y_es_--t-'
Wos there a boot ROM
L - .
no
l
checksum failure?
I
1
yes
l Require key press to
I
continue at own risk.
I
1
I Retum to start of self-test.
Was there a boot ROM checksum failure?
It--~-~-I
Require key press to
I
~s
,I
I continue at own risk.
I
Wal a failure detected?
no
yes
1
Put up finol highest priority failure value on LEDs.
J
and sound af error code on keyboard beeper if one il present.
I
Wait 1 minute before continuing. unless a key is pressed. I
I
End of self teet
Boot ROM Functions