HP 9000 Series 310 Service Information Manual page 83

Power- Up Sequence Explained
1. Turn on test LEDs.
2. Test CPU.
3. Set up data structures.
4. Search for any Boot Extension R01,1s and call any valid ones.
5. Determine CPU type (MC68010 or 1,1C68020).
6. Initialize and test processor board timer.
7. Look for a RAM monitor.
8. Reset all I/O.
9. Initialize the video circuits.
10. Checksum the Boot RO~1.
11. Display CPU chip type.
12. Initialize keyboard electronics.
13. Drop interrupt level.
14. If HP 98546A Compatibility Display Interface is found, initialize and clear graphics.
15. Test HP-IB on processor board.
16. Find any Direct Memory Access (Dl'vlA).
17. Find accessory I/O cards. Report all found. Test the following:
a. HP 98629 SRM Controller.
b. HP 98527 Color Output Card.
c. HP 98624 (TI9914 HP-IB).
d. HP 9862G RS-232 Interface Card.
e. HP 98644 RS-232 Interface Card.
f. HP 98628 RS-232 Interface Card.
g. HP 98642 4-port 1,1ultiplexed RS-232 Card.
18. Checksum any ROMs in ROM address range and report any problems.
19. Test remaining RAM and set up bottom of memory.
20. Report any rnemory failures and the amount of memory found.
21. Initialize the bottom of memory.
22. Output final LED value.
Boot Rom Functions
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