$(9$ points$)$ Consider the following program in MARIE assembly language.

a$)$ Complete the table detailing the RTN for next $3$ instructions only that will be executed including the content of registers PC$,$ IR$,$ MAR, MBR and AC in hexadecimal.

Note: the first instruction LOAD X is already filled. Note also that SKIPCOND instruction has no operands, therefore you can complete Fetch, decode and execute cycles only.

$\backslash$table$[[\backslash$table$[[$Address$],[($HEX$)]],$Instruction,HEX Contents of Memory$],[0000,$LOAD X$,1009],[0001,$ADDI Y$,$B$00$A$],[0002,$SKIPCOND $400,8400],[0003,$JUMP loc$1,9007],[0004,$Loc$2,$ ADD Y$,300$A$],[0005,$STORE X$,2009],[0006,$HALT,$7000],[0007,$loc$1,$ ADD X$,3009],[0008,$JUMP Loc$2,9004],[0009,$X$,$ HEX $0024,0024],[000$A$,$Y$,$ HEX $000$B$,000$B$],[000$B$,$Z$,$ Dec $-36,$FFDC$]]$

The RTN for the LOAD X instruction:

$\backslash$table$[[$Instruction$,$Step,RTN$,$PC$,$IR$,$MAR,MBR$,$AC$],[$

$,\backslash$table$[[($intial$],[$values$)]],,000,0000,000,0000,0000],[$Fetch$,$MAR larr PC$,000,0000,000,0000,0000],[MBRlarrM[MAR],000,0000,000,1009,0000],[IRlarrMBR,000,1009,000,1009,0000],[PClarrPC+1,001,1009,000,1009,0000],[$Decode$,$Decoded opcode $1$ in IR$[15-12]$ as load,$001,1009,000,1009,0000],[]$

$[0,001,1009,009,1009,0000],[$Get operand,MBR larr M$[$MAR$],001,1009,009,0024,0000],[$Execute$,$AClarrMBR,$001,1009,009,0024,0024]]$