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Table D-1. ENV Command Parameters (Continued)
ENV Parameter and Options
Slave address decoders setup. The slave address decoders are use to allow another VMEbus master
to access a local resource of the MVME177. There are two slave address decoders set. They are set
up as follows:
Slave Enable #1 [Y/N]
Slave Starting Address #1
Slave Ending Address #1
Slave Address Translation Address
#1
Slave Address Translation Select #1
Slave Control #1
Slave Enable #2 [Y/N]
Slave Starting Address #2
Set Environment to Bug/Operating System
Default
Meaning of Default
Y
Yes, set up and enable the Slave
Address Decoder #1.
00000000 Base address of the local resource that is
accessible by the VMEbus. Default is
the base of local memory, $0.
01FFFFFF Ending address of the local resource
that is accessible by the VMEbus.
Default is the end of calculated
memory.
00000000 This register will allow the VMEbus
address and the local address to be
different. The value in this register is
the base address of local resource that is
associated with the starting and ending
address selection from the previous
questions. Default is 0.
00000000 This register deÞnes which bits of the
address are signiÞcant. A logical one "1"
indicates signiÞcant address bits,
logical zero "0" is non-signiÞcant.
Default is 0.
03FF
DeÞnes the access restriction for the
address space deÞned with this slave
address decoder. Default is $01FF.
Y
Yes, set up and enable the Slave
Address Decoder #2.
FFE00000 Base address of the local resource that is
accessible by the VMEbus. Default is
the base address of static RAM,
$FFE00000.
D
D-11
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