Question

Corsider the register Vokies and content of some memoy loadions given belot R20) AL 54 X ox214 Rai FF OX212 OX 213 OX2N + Y ox216 2) OY R2323 P. 98 0x215 24 31 OX21 OX2N 98 FA Rio 76 OX219 BC OSIA DE using the dola Sok Vilues Values given above. delermine the ven above dermine the ribe of Resisler and merg location aber ecck insaction is exuel. Fech insluchon is executed independently A Dessing mode wed Instruction LOD R24, Y+3 R24 = Sub Rz, R27 R25 Chlag LDR20,-2 Z = R20 = ST X+ R25 C ox 218 = ORI R28, OXOF R23 - INCR21 R21 = OTS 0X218, R25 R25 OX218 =

Answer 1

Answer:-The register value and addressing modes are written below-

Question 2: E15 points) a Consider the register values and contents of some memory locations given below: XOx214 YOX216 ZOx218 R20 A1 R21 Ox212 Ox213 Ox214 x215 OR216 Gx217 Ox218 Ox219 Ox21A 54 67 52 64 FF R22 83 R23 23 R24 98 R25 FE R26 98 FA BC DE 12 R27 55 R28 76 Using the data values given above, determine the value of registers and memory loca after each instruction is executed. Each instruction is executed independently. Instruction Addressing Mode used LDD R24, Y+3 Data Indirect with Displacement R24= Y= 0x218 OXFA SUB R28, R27 R28= Ox21 C flag = 0 Register Direct LD R20, -Z Ox98 R20= Z 0x217 Data Indirect with Pre-decrement ST X+, R25 Data Indirect with Post-increment (Ox218]= 0XFA X= 0x215 ORI R28, 0XOF Ох01 R28= Register Direct INC R21 OXA2 R21 = STS 0x218, R25 Data Direct R25= OXFE [0x218]= 0XFE