Chapter 6 - 6.3 - Assemblers and Assembly Language - Practice Problem - Page 299: 1c

$\begin{array}{lll} {\text { $\quad$ }} & {\text {LOAD$\quad$} }& {\text {Y} } & {\text {--Load the value of Y into register R} } \\ {\text { $\quad$ }} & {\text {ADD$\quad$} }& {\text {Z} } & {\text {--R now holds the sum (Y + Z)} } \\ {\text { $\quad$ }} & {\text {SUBTRACT$\quad$} }& {\text {TWO} } & {\text {--R now holds (Y + Z - 2)} } \\ {\text { $\quad$ }} & {\text {STORE$\quad$} }& {\text {X} } & {\text {--Store the result in X} } \\ {\text { $\quad$ }} & {\text {,$\quad$} }& {\text { } } & {\text {X} } \\ {\text { $\quad$ }} & {\text {,$\quad$} }& {\text { } } & {\text {X} } \\ {\text { $\quad$ }} & {\text {,$\quad$} }& {\text { } } & {\text {X} } \\ {\text {X: $\quad$ }} & {\text {.DATA$\quad$} }& {\text {0} } \\ {\text {Y: $\quad$ }} & {\text {.DATA$\quad$} }& {\text {0} } \\ {\text {Z: $\quad$ }} & {\text {.DATA$\quad$} }& {\text {0} } \\ {\text {TWO: $\quad$ }} & {\text {.DATA$\quad$} }& {\text {2} } \\ \end{array}$

$\begin{array}{lll} {\text { $\quad$ }} & {\text {LOAD$\quad$} }& {\text {Y} } & {\text {--Load the value of Y into register R} } \\ {\text { $\quad$ }} & {\text {ADD$\quad$} }& {\text {Z} } & {\text {--R now holds the sum (Y + Z)} } \\ {\text { $\quad$ }} & {\text {SUBTRACT$\quad$} }& {\text {TWO} } & {\text {--R now holds (Y + Z - 2)} } \\ {\text { $\quad$ }} & {\text {STORE$\quad$} }& {\text {X} } & {\text {--Store the result in X} } \\ {\text { $\quad$ }} & {\text {,$\quad$} }& {\text { } } & {\text {X} } \\ {\text { $\quad$ }} & {\text {,$\quad$} }& {\text { } } & {\text {X} } \\ {\text { $\quad$ }} & {\text {,$\quad$} }& {\text { } } & {\text {X} } \\ {\text {X: $\quad$ }} & {\text {.DATA$\quad$} }& {\text {0} } \\ {\text {Y: $\quad$ }} & {\text {.DATA$\quad$} }& {\text {0} } \\ {\text {Z: $\quad$ }} & {\text {.DATA$\quad$} }& {\text {0} } \\ {\text {TWO: $\quad$ }} & {\text {.DATA$\quad$} }& {\text {2} } \\ \end{array}$