LCSR Programming Model

Local Bus Slave (VMEbus Master) Attribute Register 2

ADR/SIZ

 

 

 

$FFF40028 (8 bits of 32)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BIT

15

14

 

13

12

11

 

10

9

 

8

 

 

 

 

 

 

 

 

 

 

 

 

NAME

D16

WP

 

 

 

 

AM

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OPER

R/W

R/W

 

 

 

 

R/W

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RESET

0 PS

0 PS

 

 

 

 

O PS

 

 

 

 

 

 

 

 

 

 

 

 

 

This register is the attribute register for the second local bus to VMEbus

 

bus map decoder.

 

 

 

 

 

 

 

 

AM

 

These bits define the VMEbus address modifier codes the

 

 

 

VMEbus master uses for the segment defined by map

 

 

 

decoder 2. Since the local bus to VMEbus interface does

 

 

 

not support block transfers, the block transfer address

 

 

 

modifier codes should not be used.

 

 

 

 

WP

 

When this bit is high, write posting is enabled to the

 

 

 

 

segment defined by map decoder 2. When this bit is low,

 

 

 

write posting is disabled to the segment defined by map

 

 

 

decoder 2.

 

 

 

 

 

 

 

 

D16

 

When this bit is high, D16 data transfers are performed to

 

 

 

the segment defined by map decoder 2. When this bit is

 

 

 

low, D32 data transfers are per- formed to the segment

 

 

 

defined by map decoder 2.

 

 

 

 

 

2

http://www.mcg.mot.com/literature

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Image 123
Motorola MVME172 manual Bus map decoder, Decoder 2. Since the local bus to VMEbus interface does