ENV – Set Environment
http://www.motorola.com/computer/literature
6-11
6
Processor/Memory Mezzanine Module User’s Manual, listed in
Appendix D, Related Documentation
, for appropriate values. The
default value varies according to the system’s bus clock speed.
Note
ROM First Access Length is not applicable to the
MVME2600/3600/4600. The configured value is ignored by
PPCBug.
ROM Next Access Length (0 - 15) = 0?
The value programmed into the MPC105 “ROMNAL” field (Memory
Control Configuration Register 8: bits 28-31) to represent wait states
in access time for nibble (or burst) mode ROM accesses. The lowest
allowable ROMNAL setting is $0; the highest allowable is $F. The
value to enter depends on processor speed; refer to your
Processor/Memory Mezzanine Module User’s Manual for appropriate
values. The default value varies according to the system’s bus clock
speed.
Note
ROM Next Access Length is not applicable to the
MVME2600/MVME3600/MVME4600. The configured value is
ignored by PPCBug.
DRAM Parity Enable [On-Detection/Always/Never - O/A/N] = O?
Note
This parameter (above) also applies to enabling ECC for DRAM.
O
DRAM parity is enabled upon detection. (Default)
A
DRAM parity is always enabled.
N
DRAM parity is never enabled.