Improved toggle ?

[barrym95838]

Charlie, are we allowed to trick stackh into holding the full address temporarily to save six bytes?

toggle
    lda stackl,x
    sta stackh-1,x
    lda (stackh-1,x)
    eor tos
    sta (stackh-1,x)
    jmp twodrop

It seems to me that as long as you don't execute FORTH inside your interrupt handlers, you could get away with it.