Motorola MVME172 - Manual (Page 122)

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VMEchip2
2
Local Bus Slave (VMEbus Master) Attribute Register 3
This register is the attribute register for the third 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 3. Because 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 3. When this bit is low,
write posting is disabled to the segment defined by map
decoder 3.
D16 When this bit is high, D16 data transfers are performed to
the segment defined by map decoder 3. When this bit is
low, D32 data transfers are per- formed to the segment
defined by map decoder 3.
ADR/SIZ $FFF40028 (8 bits of 32)
BIT 23 22 21 20 19 18 17 16
NAME D16 WP AM
OPER R/W R/W R/W
RESET 0 PS 0 PS O PS