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This *Command displays the values in memory, in grouped bytes into if 4-byte the optional B is given, or in words unless specified otherwise.
*Memory [B] [P] [B|H|D]addr_|_reg1
*Memory [B] [P] [B|H|D]addr_|_reg1 [+|-]addr2_|_reg2
*Memory [B] [P] [B|H|D]addr_|_reg1 +|-addr2_|_reg2 +addr3_|_reg3
B|H|D | Display bytes, halfwords or double words (optional) |
addr1_|_reg1 | Address or register containing start of display (hexadecimal) |
addr2_|_reg2 | Address or register containing offset (hexadecimal) |
addr3_|_reg3 | Address or register containing offset (hexadecimal) |
If only the start address is specified, then 256 bytes will be returned starting from this address.
If two addresses are specified, then it they specifies specify the start and end address addresses (unless specifying an offset by use of + or – symbols. symbols).
If three addresses are specified, then the second address is an offset from the start address, and the third address specifies the end address.
By default, the output is grouped into 4-byte words. This grouping can be changed by using the B, H or D flags (see above).
On kernels that support OS_Memory 14 and OS_Memory 15, the P flag causes physical memory to be mapped in temporarily (first flushing the cache to avoid inaccurate data being read). Otherwise, the system is assumed to be IOMD-based, where the 512MB of physical address space is mapped in at &80000000.