Set Environment to Bug/Operating System

Table D-1. ENV Command Parameters (Continued)

ENV Parameter and Options

Default

Meaning of Default

 

 

 

Slave address decoders setup. The slave address decoders are use to allow another VMEbus master to access a local resource of the MVME177. There are two slave address decoders set. They are set up as follows:

Slave Enable #1 [Y/N]

Y

Yes, set up and enable the Slave

 

 

Address Decoder #1.

 

 

 

Slave Starting Address #1

00000000

Base address of the local resource that is

 

 

accessible by the VMEbus. Default is

 

 

the base of local memory, $0.

 

 

 

Slave Ending Address #1

01FFFFFF

Ending address of the local resource

 

 

that is accessible by the VMEbus.

 

 

Default is the end of calculated

 

 

memory.

 

 

 

Slave Address Translation Address

00000000

This register will allow the VMEbus

#1

 

address and the local address to be

 

 

different. The value in this register is

 

 

the base address of local resource that is

 

 

associated with the starting and ending

 

 

address selection from the previous

 

 

questions. Default is 0.

 

 

 

Slave Address Translation Select #1

00000000

This register deÞnes which bits of the

 

 

address are signiÞcant. A logical one "1"

 

 

indicates signiÞcant address bits,

 

 

logical zero "0" is non-signiÞcant.

 

 

Default is 0.

 

 

 

Slave Control #1

03FF

DeÞnes the access restriction for the

 

 

address space deÞned with this slave

 

 

address decoder. Default is $01FF.

 

 

 

Slave Enable #2 [Y/N]

Y

Yes, set up and enable the Slave

 

 

Address Decoder #2.

 

 

 

Slave Starting Address #2

FFE00000

Base address of the local resource that is

 

 

accessible by the VMEbus. Default is

 

 

the base address of static RAM,

 

 

$FFE00000.

 

 

 

D

D-11

Page 155
Image 155
Motorola MVME177 manual Accessible by the VMEbus. Default is