Alpha Microsystems Eagle 100 Specifikace stáhnout pdf (Strana 32)

CHAPTER 3

AM-3000M/LC Hardware Installation

3.1HARD DRIVE CONSIDERATIONS

Whether you’re installing a new pre-configured Roadrunner bootable SCSI disk drive, or

you’re going to use your existing hard drive as the main system boot drive, there are

certain considerations that must be taken into account before proceeding with the actual

hardware upgrade.

The following sub-sections highlight the various differences between a

standard

(not

AM-540 modified) AM-140 CPU board, and a

modified

(with AM-540) AM-140 CPU

board. You should read and understand the following information before attempting the

Roadrunner hardware upgrade.

Remember - before attempting any software or hardware upgrade, be sure you have a

current backup of your system, and a verified warm-boot tape!

3.1.1Roadrunner Boot PROM Routines

For a

standard

AM-3000M system, the boot PROM on the Roadrunner is programmed

to look first at the SASI port on the main CPU board. If a SCSI drive addressed as I.D.0

is detected on the SASI port it will be selected as the boot device. If no boot drive is

detected on the SASI port, the boot PROM will then check the Roadrunner’s SCSI port

for a device. If a SCSI drive addressed as I.D.0 is detected, then it will be selected as

the boot device.

For an

AM-540 modified

AM-3000M system, the boot PROM on the Roadrunner is

programmed to bypass the SASI port on the main CPU board since the EN modification

for the AM-540 upgrade effectively eliminates any communication to the SASI port. If

the Roadrunner board does not meet the minimum revision levels as listed in the

"HARDWARE COMPATIBILITY" section of this document, then the system will "hang"

indefinately waiting for a response from the SASI port... that will never come!

If your configuration includes a Tandberg tape drive or other SCSI peripheral, make

sure the bootable hard disk and the peripheral device(s) are attached to the SAME bus.

PDI-00172-60, Rev. A02

1 2 ... 27 28 29 30 31 32 33 34 35 36 37 ... 88 89

Žádné komentáře

Alpha Microsystems Eagle 100 Specifikace Strana 32