The memory size of the extended file system in
byte unit. The value zero also means that extended
file system is disabled. Non-zero value
means enabled. Its suggested that the size
is in multiple of 128k bytes.
Some of the well-known memory sizes and their correspond
decimal values are as followed:
Mem size Decimal Value
^^^^^^^^ ^^^^^^^^^^^^^
128K 131072
256K 262144
512K 524288
1M 1048576
2M 2097152
4M 4194304
8M 8388608