% Stack test (as featured on many of my YouTube videos)

ldl->b b11110000    % Load 11110000 into B register
ldl->c b00001111    % Load 00001111 into C register


pushb       % Push B to top of stack (note that stack pointer SP grows downward)
pushc       % Push C to top of stack (note that stack pointer SP grows downward)

pop->a      % Pop top value off of stack and into A. Should equal C
pop->a      % Pop top value off of stack and into A. Should equal B