Motorola 700 Series Installation And Use Manual page 129

Table A-1. ENV Command Parameters (Continued)
ENV Parameter and Options
Memory Configuration Defaults:
The default configuration for Dynamic RAM mezzanine boards will position the
mezzanine with the largest memory size to start at the address selected with the ENV
parameter ''Base Address of Dynamic Memory''. The Base Address parameter defaults
to 0. The smaller sized mezzanine will follow immediately above the larger in the
memory map. If mezzanines of the same size and type are present, the first (closest to
the board) is mapped to the selected base address. If mezzanines of same size but with
different type (parity and ECC) are present, the parity type will be mapped to the
selected base address and the ECC type mezzanine will follow. The SRAM does not
default to a location in the memory map that is contiguous with Dynamic RAM.
Base Address of Dynamic
Memory
Size of Parity Memory
Size of ECC Memory Board 0
Size of ECC Memory Board 1
Base Address of Static
Memory
Size of Static Memory
Set Environment to Bug/Operating System
Default Meaning of Default
00000000 Beginning address of Dynamic Memory
(Parity and/or ECC type memory). It
must be a multiple of the Dynamic
Memory board size, starting with 0.
Default is $0.
00100000 This is the size of the Parity type dynamic
RAM mezzanine, if any. The default is the
calculated size of the Dynamic memory
mezzanine board.
00000000 This is the size of the first ECC type
memory mezzanine. The default is the
calculated size of the memory mezzanine.
00000000 This is the size of the second ECC type
memory mezzanine. The default is the
calculated size of the memory mezzanine.
FFE00000 This is the beginning address of SRAM.
The default is FFE00000 for the onboard
128KB SRAM, or E1000000 for the 2MB
SRAM mezzanine. If only 2MB SRAM is
present, it defaults to address 00000000.
00080000 This is the size of the SRAM type memory
present. The default is the calculated size
of the onboard SRAM or an SRAM type
mezzanine.
A
A-9