user manual

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.