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

\begin{array}{llll} & LOAD & ZERO & --Put\ 0\ in\ R \\ & STORE & SUM & --Initialize\ SUM\ to\ 0 \\ & STORE & I & --Initialize\ loop\ counter\ to 0 \\ LOOP: & LOAD & FIFTY & --Put\ 50\ in\ R \\ & COMPARE & I & \\ & JUMPEQ & DONE & --I\ equals\ 50,\ exit\ loop \\ & LOAD & SUM & --Put\ SUM\ in\ R \\ & ADD & I & --R\ now\ holds\ (SUM + I) \\ & STORE & SUM & --Store\ result\ in\ SUM \\ & INCREMENT & I & --Add\ 1\ to\ I \\ & JUMP & LOOP & --end\ of\ loop\ body \\ DONE: & & & --the\ next\ statement\ goes\ here \\ & . & & \\ & . & & \\ & . & & \\ I: & DATA & 0 & \\ SUM: & .DATA & 0 & \\ ZERO: & .DATA & 0 & \\ FIFTY: & .DATA & 50 & \end{array}

\begin{array}{llll} & LOAD & ZERO & --Put\ 0\ in\ R \\ & STORE & SUM & --Initialize\ SUM\ to\ 0 \\ & STORE & I & --Initialize\ loop\ counter\ to 0 \\ LOOP: & LOAD & FIFTY & --Put\ 50\ in\ R \\ & COMPARE & I & \\ & JUMPEQ & DONE & --I\ equals\ 50,\ exit\ loop \\ & LOAD & SUM & --Put\ SUM\ in\ R \\ & ADD & I & --R\ now\ holds\ (SUM + I) \\ & STORE & SUM & --Store\ result\ in\ SUM \\ & INCREMENT & I & --Add\ 1\ to\ I \\ & JUMP & LOOP & --end\ of\ loop\ body \\ DONE: & & & --the\ next\ statement\ goes\ here \\ & . & & \\ & . & & \\ & . & & \\ I: & DATA & 0 & \\ SUM: & .DATA & 0 & \\ ZERO: & .DATA & 0 & \\ FIFTY: & .DATA & 50 & \end{array}