Registers R4 and R5 contain the decimal numbers 2000 and 3000 before each of the following addressing modes is used to access a memory operand. What is the effective address (EA) in each case? a) 12(R4) b) (R4,R5) c) 28(R4,R5) d) (R4)+ e) -(R4)
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What will be the effective address and operand to be loaded by using Register indirect mode? (A) 200,400 (B) 400,1000 (C) 400,500 (D) 200,1000
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Given the starting values listed for registers and a portion of storage, show the complete contents (in hex) after execution of the instruction. Starting values apply to each instruction. Results are NOT cumulative. Starting values for each instruction: R0 = 00000200 R1 = FF000204 R3 = 0000036C R4 = FFFFFFFF R5 = FFFFFFFF R6 = 00000004 R7 = 00000064 R8 = 00000004 ADDRESS CONTENTS 000200 F5F5F5F5 0000003C 00000123 00000008 LR 5,6 R5 = _____________ LA 1,2(0,3) R1 = _____________ L 6,4(6,1) R6 = _____________ DR 4,8 R4 = _____________ R5 = _____________ AR 0,6 R0 = _____________ MR 4,4 R4 = _____________ R5 = _____________ LTR 3,4 R3 = _____________
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