$5$

$(13)$ Single Stepping the program involves the construction of a matrix with the following columns: : pts$)$

$($a$)PC,OC,SP,A,D,E$

$($b$)PC,OC,F,A,D,E,H,L$

$($c$)$ PC$,$ OC$,$ ALL CPU REGISTERS

$($d$)$ NONE OF THE ABOVE

$(14)$ By replacing the instruction CD $02$E$7,$ by JMP $2000,$ the program output becomes: :$>>>>>>>>>>>>>>>>>>>(10$ pts$)$

$($a$)123456$ during about $0\mathrm{.}5$ seconds

$($b$)56$ during $1$ second

$($c$)123456$ during about $1$ seconds

$($d$)123456$ more than $2$ seconds

$(15)$ By replacing the instruction CD $02$E$7,$ by JMP $2008,$ the program output becomes: : pts$)$

$($a$)123456$ indefinitely

$($b$)1234$ indefinitely

$($c$)56$ during about $1$ seconds

$($d$)$ NONE OF THE ABOVE

$(16)$ The program can be executed by entering the following keyboard sequence: $>>>>>>>>>>>>>>>>>>>>>>>>(4$ pts$)$

$($a$)$ RESET, GO $2000,$ EXEC

$($b$)$ SUB $2000,$ NEXT $,$ EXEC

$($c$)$ SINGLE STEP $2000,$ EXEC

$($d$)$ NONE OF THE ABOVE