Motorola 700/800-Series User Manual

Set Environment to Bug/Operating System

A-13

Master Address Translation 
Address #4

00000000

Allows the VMEbus address and the local 
address to differ. The value in this register 
is the base address of the VMEbus 
resource that is associated with the 
starting and ending address selection 
from the previous questions. Default is 0. 

Master Address Translation 
Select #4

00000000

DeÞnes which bits of the address are 
signiÞcant. A logical 1 indicates 
signiÞcant address bits, logical 0 is non-
signiÞcant. Default is 0. 

Master Control #4

00

DeÞnes the access characteristics for the 
address space deÞned with this master 
address decoder. Default is $00. 

Short I/O (VMEbus A16) 
Enable [Y/N]

Y

Yes, enable the Short I/O Address 
Decoder. 

Short I/O (VMEbus A16) 
Control

01

DeÞnes the access characteristics for the 
address space deÞned with the Short I/O 
address decoder. Default is $01. 

F-Page (VMEbus A24) Enable 
[Y/N]

Y

Yes, enable the F-Page Address Decoder. 

F-Page (VMEbus A24) Control

02

DeÞnes the access characteristics for the 
address space deÞned with the F-Page 
address decoder. Default is $02. 

ROM Access Time Code 

04

DeÞnes the ROM access time. The default 
is $04, which sets an access time of Þve 
clock cycles of the local bus.

Flash Access Time Code

03

DeÞnes the Flash access time. The default 
is $03, which sets an access time of four 
clock cycles of the local bus.

MCC Vector Base 
VMEC2 Vector Base #1 
VMEC2 Vector Base #2 

05 
06 
07 

Base interrupt vector for the component 
speciÞed. Default: MC2chip = $05, 
VMEchip2 Vector 1 = $06, VMEchip2 
Vector 2 = $07.