2

VMEchip2

$FFF40010. The adders allow any size board to be mapped on any 64KB boundary. The adders are disabled and the address replacement method is used following reset.

Write posting is enabled for the segment by setting the write post enable bit in the attribute register. Local bus snooping for the segment is enabled by setting the snoop bits in the attribute register. The snoop bits in the attribute register are driven on to the local bus when the VMEbus to local bus interface is local bus master.

VMEbus Slave Ending Address Register 1

ADR/SIZ

 

$FFF40000 (16 bits of 32)

 

 

 

 

 

BIT

31

. . .

16

 

 

 

 

NAME

 

Ending Address Register 1

 

 

 

 

 

OPER

 

R/W

 

 

 

 

 

RESET

 

0 PS

 

 

 

 

 

This register is the ending address register for the first VMEbus to local bus map decoder.

VMEbus Slave Starting Address Register 1

ADR/SIZ

 

$FFF40000 (16 bits of 32)

 

 

 

 

 

BIT

15

. . .

0

 

 

 

 

NAME

 

Starting Address Register 1

 

 

 

 

 

OPER

 

R/W

 

 

 

 

 

RESET

 

0 PS

 

 

 

 

 

This register is the starting address register for the first VMEbus to local bus map decoder.

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Image 106
Motorola MVME172 manual VMEbus Slave Ending Address Register, VMEbus Slave Starting Address Register