On Sun, Mar 21, 2021 at 12:52 PM Arnd Bergmann <[email protected]> wrote: > On Sat, Mar 20, 2021 at 9:43 PM Peter Maydell <[email protected]> > wrote:
> https://tldp.org/HOWTO/Plug-and-Play-HOWTO-6.html#ss6.12 > states the behavior of the ISA I/O ports and how Linux drivers rely > on that. Is that enough for you? Actually it only mentions it very indirectly, by saying that if a present device has 0xFF in a register, the detection may fail since it looks like a missing device. Arnd
