HP 9000 Series 310 Service Information Manual page 98

10. The lnessage
RESET to Power-Up
appears on the last line of the display.
11. Drop Interrupt Level:
The interrupt level is dropped to zero.
12. Pre-load Memory:
The message
LOADING MEMORY
appears on the last line of the display while the end of
memory is found by pre-loading the RAM not currently in use by the Boot ROM code.
If a long test is to be done, the RAM is loaded with EEEElll116. If the fast test is to be
done, each RAM location is loaded with its own address. When pre-loading is finished,
the message
SELF-TEST MODE
is displayed on the last line of the display. Then, a 300 ms
delay is executed to catch refresh failures.
13. Test and Initialize Graphics on Alpha/Graphics Card.
If an HP 98546A is present, then it is tested with a byte-wide RAM test. If the graphics
test is passed, then the message
Graphics
is displayed. If the graphics test is failed, then
the lllessage
Graphics Failed
is displayed and the appropriate value is sent to the LEDs.
If there is a graphics memory failure, it is shown on the display as following two lines:
Memory Failed at <Hex-Address>
(W:<Hex-Write-Pattern>, R:<Hex-Read-Pattern»
Finally, graphics memory is cleared.
14. Test HP-IB:
If the processor has HP-IB and it is the system controller then the Boot ROM will test
it. If the HP-IB hardware fails the test, then the message
HP-IB Failed
is displayed and
the appropriate value is sent to the LEDs. If the HP-IB hardware is present and had no
failures, then
HP-IB
is displayed.
15. Check For DMA Presence:
If the DMA card is present then the message
HP98620A
or
HP98620B
is displayed. No testing
of the DMA card is done.
16. I/O Card Tests:
Select codes 0 through 31 are scanned by the Boot ROM. For each select code the following
steps are taken:
a. The appropriate value is sent to the LEDs indicating which select code is being
examined.
b. If one of the following cards is found at the current select code, it will be tested by
the Boot ROM:
• HP 98629 SRM Controller card
• HP 98627 Color Card
• HP 98624 (T19914 HP-IB) Card
• HP 98626 RS-232 Interface Card
• HP 98644 RS-232 Interface Card
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Boot Rom Functions