SixtyPical/eg/rudiments/add.60p

// Include `support/${PLATFORM}.60p` before this source
// Should print YY

word score

define main routine
  inputs a, score
  outputs score
  trashes a, c, z, n, v
{
    ld a, 3
    st off, c
    add a, 4

    cmp a, 7
    if z {
        ld a, 89
        call chrout
    } else {
        ld a, 78
        call chrout
    }

    copy 999, score
    st off, c
    add score, 1999

    cmp score, 2998
    if z {
        ld a, 89
        call chrout
    } else {
        ld a, 78
        call chrout
    }
}