Motorola USB08 Instruções de Operação descarregar pdf (Página 53)

8.17 Modify Memory M, MM

Format:

M StartAddress

MM StartAddress

Command to modify random access memory byte by byte. An explicit start address must be specified.

When the command is given, Xplor8 will reply with the address and the current value at that address,

followed by a period. Typing a new byte value, followed by the enter key, will change that memory

location, then advance the memory address by one and present the next byte for modification.

Pressing the space bar followed by the enter key will preserve the existing memory value. Pressing the

enter key alone will terminate the modify memory command. Typing a '+' followed by an offset

(default hexadecimal) will advance the location to be modified by that amount, similarly a '-' will

retard the location. Typing '=' followed by an address will make this address the new location for

modification. An omitted offset defaults to 1, omitting the address defaults to the current address.

For example, typing

M 8000

might give

8000 34.

Completing this line thus:

8000 34.4A

and pressing the enter key will change memory location $8000 from $34 to $4A and present the next

memory location for modification thus

8001 C3.

If the enter key is now pressed without typing a new byte value, the command will terminate, leaving

location $8001 with the value $C3. If the space bar was pressed before the enter key, then the value

$C3 would also have been preserved, but the command would not terminate, and the next location,

$8002 would be presented for modification. Typing:

8001 C3.+3

will advance the location to $8004 without changing the byte at $8001, and present the byte for

modification:

8004 5F.

Typing an '=' and a new address moves modification to that address:

8004 5F.=8010

1 2 ... 48 49 50 51 52 53 54 55 56 57 58 ... 99 100

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Motorola USB08 Instruções de Operação Página 53