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I am suppose to determine the effective address if the instruction below and the contents of any affected register (except the PC) or memory location after each of the instructions in problem is executed. Assume the initial state (in hex) of the CPU and memory before every instruction is as follows: Processor is MC68hc12.
ACCA = 00 ACCB = 05 IX = 0111 IY = 0100
0100 FF E7 00 20 58 66 00 80 FF BC 10 00 9D 33 EF 76
0110 41 CC 71 55 00 00 D3 17 11 22 A1 01 13 66 85 EE
I don't even know how to start the problem. From what I could find the effective address is the address of the data referred to in the instruction. My textbook didn't even define effective address. Could someone provide a little explanation on this or point me to some simple explanation of the concept.
Thanks
ACCA = 00 ACCB = 05 IX = 0111 IY = 0100
0100 FF E7 00 20 58 66 00 80 FF BC 10 00 9D 33 EF 76
0110 41 CC 71 55 00 00 D3 17 11 22 A1 01 13 66 85 EE
I don't even know how to start the problem. From what I could find the effective address is the address of the data referred to in the instruction. My textbook didn't even define effective address. Could someone provide a little explanation on this or point me to some simple explanation of the concept.
Thanks
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