Motorola MVME2301, Installation And Use Manual, Page: 105 / 167

Modifying the Environment
6-13
6
Note LED/Serial Startup Diagnostic Codes: these codes can
be displayed at key points in the initialization of the
hardware devices. Should the debugger fail to come up
to a prompt, the last code displayed will indicate how
far the initialization sequence had progressed before
stalling. The codes are enabled by an
ENV parameter:
Serial Startup Code Master Enable [Y/N]=N?
A line feed can be inserted after each code is displayed to
prevent it from being overwritten by the next code. This is also
enabled by an
ENV parameter:
Serial Startup Code LF Enable [Y/N]=N?
The list of LED/serial codes is included in the section on MPU,
Hardware, and Firmware Initialization in Chapter 1 of the PPCBug
Firmware Package UserÕs Manual .
Configuring the VMEbus Interface
ENV
asks the following series of questions to set up the VMEbus
interface for the MVME230x modules. To perform this
configuration, you should have a working knowledge of the
Universe ASIC as described in your
MVME2300-Series VME
Processor Module ProgrammerÕs Reference Guide .
VME3PCI Master Master Enable [Y/N] = Y?
PCI Slave Image 0 Control = 00000000?
The conÞgured value is written into the LSI0_CTL register of
the Universe chip.
PCI Slave Image 0 Base Address Register = 00000000?
The conÞgured value is written into the LSI0_BS register of the
Universe chip.
Y
Set up and enable the VMEbus Interface.
(Default)
N
Do not set up or enable the VMEbus Interface.