Alpha Microsystems AM-647 Spezifikationen PDF herunterladen (Seite 16)

Page 11Installation Instructions: Roadrunner 030 & 040 AM-1000 / AM-1200 Upgrade

The boot PROMS on the Roadrunner board are programmed to look first at the SASI

port on the AM-167 or AM-177 board. If a SCSI drive addressed as #0 is detected on

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

SASI port, the boot PROMS will then check the Roadrunner board’s SCSI port for a

device. If a SCSI drive addressed as #0 is detected on the Roadrunner board, it will be

selected as the boot device.

The installation of Roadrunner hardware does not change the way your boot select

switch works on your AM-167 or AM-177 board. The switch settings documented in your

computer owner’s manual are still valid.

Under AMOS 2.2 (or later) operating systems, you can divide your hard disk drive into

logical devices larger than 32MB. In fact, you could take a 540MB drive and make it one

giant 540MB logical. While this is perfectly acceptable, you may get a memory allocation

error when running programs that load a copy of the bitmap into your memory

partition—e.g., DSKANA and MONTST. To use these types of programs, you will need

at least one job on your computer with enough memory allocated to allow you to load

the large bitmap. Depending on the size of the logical device, you may need a memory

partition between 100 and 800KB.

6.0AM-1000/1200 BOOT CONFIGURATION SWITCHES AND JUMPERS

The two tables on the following page show how the AM-1000 and AM-1200 computers

are configured to boot from various primary (hard disk drive) and secondary (VCR,

floppy, and SCSI streamer) devices. Note that in order to configure the boot jumpers on

the AM-1000, you need to remove the computer’s top cover. The AM-1200 computer

has a dip-switch for boot device selection, which can be accessed via the computer’s

rear panel.

PDI-00172-10, Rev. A03

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