FIGURE $8\mathrm{.}34$

The program for Exercise $4.$The program of FIGURE $8\mathrm{.}34$ executes, generating an interrupt for DECI.

For Figure $8\mathrm{.}6,$ the entry to and exit from the trap handler, state the

values in the following registers as BOTH four hexadecimal digits and numericals:

$*($a$)$ X$(8.\mathrm{.}15$:$)$ after LDBX at FC$52$

$*($b$)$ X after ASRX at FC$69$

$($c$)$ X after SUBX at FC$6$A

$($d$)$ PC after CALL at FC$6$E

$($e$)$ PC after RETTR at FC$71$

$5.$ Do Exercise $4$ for the DECO instruction.