> I'm working on the Savage Quest driver right now.
> After implementing support for the missing PAM registers and fixing a collection of
> things in the IDE controller code, it starts booting and eventually I see an IRQ2
> acknowledge request.
> However, the "pic8259->read_slave_ack_func(irq);" call is exiting with this message:
>
> "Error: bad downcast<> or device<>. Tried to convert the device ic8259_1 of
> type class device_t * to a class savquest_state *, which are incompatible."
>
> The only other drivers that implement the 8259 are also skeletons, and I haven't
> managed to get any of them to trigger an acknowledge request to see if they fail
> similarly.
> What have I not implemented yet that might fix this?
without the actual source is hard to tell exactly where the problem is.
I'd start from checking that your savquest_state class contains a device_t pic8259 member, so that you can later call state->pic8259->read_slave_ack_func as above.
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Re: bad downcast<> or device<>
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