Alpha Microsystems Eagle 100 Specifications download pdf (Page 81)

Page C-4 Appendix C

C.3.2Booting from the Roadrunner SCSI Port

Before you turn off power to your computer and install the Roadrunner hardware, you

need to make a couple of adjustments for Roadrunner compatibility:

Instructions outlined in this section require that you directly modify your AMOS monitor,

as well as your AMOS system initialization command file. These files are being

modified directly to allow the computer to boot from the new Roadrunner hardware once

it is installed. This is why it is so important to have a bootable tape or some other means

of accessing your hard disk drive should a problem arise.

1.The high performance features incorporated into the Roadrunner hardware

require more queue blocks. You need to increase the queue block parameter in

the system initialization command file in order to support the Roadrunner

hardware.

Use this formula to determine your new queue block requirement:

NEW QUEUE BLOCK REQUIREMENT = OLD QUEUE BLOCKS + (13 x THE NUMBER OF JOBS)

For example, if the QUEUE statement in your system initialization command file is

currently set to 200 and the JOBS statement is set to 50, the resulting formula

would look like this:

NEW QUEUE BLOCK REQUIREMENT = 200 + (13 x 50)

For the example, the QUEUE statement would now be set to 850 to accommodate

the Roadrunner hardware.

2.If you are booting from a SCSI disk drive or have any SCSI peripheral connected

to the Roadrunner hardware, you need to define the SCSI dispatcher (described

in a previous section of this document) in your system initialization command file.

The PIC for the SCSI dispatcher must be purchased separately from Alpha Micro.

In order to enable the PIC-coded dispatcher, the command:

SCZDSP SCZRR.SYS

must be entered in the system initialization command file after the TRMDEF

statements, but before the first DEVTBL command.

PDI-00172-60, Rev. A02

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Alpha Microsystems Eagle 100 Specifications Page 81