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Automatic address functions can help cracker accurately locate the critical byte in the firmware program and provide the feasible solution to Dump Philip MCU P89C73B Program Code.

Using the Automatic Address Recognition feature allows a master to selectively communicate with one or more slaves by invoking the Given slave address or addresses. All of the slaves may be contacted by using the Broadcast address.

Dump Philip MCU P89C73B Program Code

Two special Function Registers are used to define the slave’s address, SADDR, and the address mask, SADEN. SADEN is used to define which bits in the SADDR are to b used and which bits are “don’t care”. The SADEN mask can be logically ANDed with the SADDR to create the “Given” address which the master will use for addressing each of the slaves.

Use of the Given address allows multiple slaves to be recognized while excluding others. The following examples will help to show the versatility of this scheme from Dump Philip MCU P89C73B Program Code:

Slave 0 SADDR = 1100 0000
SADEN = 1111 1101
Given = 1100 00X0

Slave 1            SADDR   =        1100  0000

SADEN   =         1111   1110

Given      =           1100 000X

In the above example SADDR is the same and the SADEN data is used to differentiate between the two slaves. Slave 0 requires a 0 in bit 0 and it ignores bit 1 in order to Crack NXP P87C552 Microcontroller Flash Memory. Slave 1 requires a 0 in bit 1 and bit 0 is ignored. A unique address for Slave 0 would be 1100 0010 since slave 1 requires a 0 in bit 1.

A unique address for slave 1 would be 1100 0001 since a 1 in bit 0 will exclude slave 0. Both slaves can be selected at the same time by an address which has bit 0 = 0 (for slave 0) and bit 1 = 0 (for slave 1). Thus, both could be addressed with 1100 0000.

In a more complex system the following could be used to select slaves 1 and 2 while excluding slave 0: