D

Configure and Environment Commands

Table D-1. ENV Command Parameters (Continued)

ENV Parameter and Options

Default

Meaning of Default

 

 

 

Memory Search Delay Address

FFFFCE0F

Default address is $FFFFCE0F. This is

 

 

the MVME177 GCSR GPCSR0 as

 

 

accessed through VMEbus A16 space

 

 

and assumes the MVME177 GRPAD

 

 

(group address) and BDAD (board

 

 

address within group) switches are set

 

 

to "on". This byte-wide value is

 

 

initialized to $FF by MVME177

 

 

hardware after a System or Power-on

 

 

Reset. In a multi-MVME177

 

 

environment, where the work pages of

 

 

several Bugs are to reside in the

 

 

memory of the primary (Þrst)

 

 

MVME177, the non-primary CPUs will

 

 

wait for the data at the Memory Search

 

 

Delay Address to be set to $00, $01, or

 

 

$02 (refer to the Memory Requirements

 

 

section in Chapter 3 for the deÞnition of

 

 

these values) before attempting to

 

 

locate their work page in the memory of

 

 

the primary CPU.

 

 

 

Memory Size Enable [Y/N]

Y

Memory will be sized for Self Test

 

 

diagnostics.

 

 

 

Memory Size Starting Address

00000000

Default Starting Address is $0.

 

 

 

Memory Size Ending Address

02000000

Default Ending Address is the

 

 

calculated size of local memory.

 

 

 

Base Address of Local Memory

00000000

Beginning address of Local Memory. It

 

 

must be a multiple of the Local Memory

 

 

board size, starting with 0. The Bug will

 

 

set up hardware address decoders so

 

 

that Local Memory resides as one

 

 

contiguous block at this address.

 

 

Default is $0.

 

 

 

Size of Local Memory Board #0

02000000

You are prompted twice, once for each

Size of Local Memory Board #1

00000000

possible MVME177 memory board.

 

 

Default is the calculated size of the

 

 

memory board.

 

 

 

D-10

Page 154
Image 154
Motorola MVME177 manual $02 refer to the Memory Requirements