;some useful macros to help get you started
;Assemble this file and carefully examine the listing

         ;lo( <expr> ) masks off the least significant byte of <expr>.
         define( lo,
         changequote([,])[($1) & x'0ff]changequote(`,'))

         ;hi( <expr> ) isolates the most significant byte of <expr>
         define( hi,`($1) >> 8')

         .equ test,x'2211
         .db lo(test)
         .db hi(test)
         .end