I started a new thread, because the question might get buried in a thread about PCI IDE controllers.
I would ask in another forum, if I knew another forum with as many experienced ATAPI drive users as this one
Promise TX2 (and derivate) chip based motherboads do not work with firmware flashing nor does it work with Kprobe (according to user reports I've read). Some also report very high cpu usage when burning with Promise or ITE motherboard IDE chips.
Maybe this can vary from board to board? I have no information about this either way.
So, that's why I'm soliciting comments from all the expert folk in this forum.