2

VMEchip2

VMEbus Slave Address Translation Select Register 1

ADR/SIZ

 

$FFF40008 (16 bits of 32)

 

 

 

 

 

BIT

15

. . .

0

 

 

 

 

NAME

 

Address Translation Select Register 1

 

 

 

 

 

OPER

 

R/W

 

 

 

 

 

RESET

 

0 PS

 

 

 

 

 

This register is the address translation select register for the first VMEbus- to-local-bus map decoder. The address translation select register value is based on the segment size (the difference between the VMEbus starting and ending addresses).

If the segment size is between the sizes shown in the table below, assume the larger size.

Segment

Address

Translation

Size

Select Value

 

 

 

64KB

FFFF

 

 

128KB

FFFE

 

 

256KB

FFFC

 

 

512KB

FFF8

 

 

1MB

FFF0

 

 

2MB

FFE0

 

 

4MB

FFC0

 

 

8MB

FF80

 

 

16MB

FF00

 

 

Segment

Address

Translation

Size

Select Value

 

 

 

32MB

FE00

 

 

64MB

FC00

 

 

128MB

F800

 

 

256MB

F000

 

 

512MB

E000

 

 

1GB

C000

 

 

2GB

8000

 

 

4GB

0000

 

 

 

 

2-30

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Page 120
Image 120
Motorola MVME1X7P manual VMEbus Slave Address Translation Select Register, Segment Address Translation Size Select Value