> 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.
I haven't changed that part of the original code - I just added some missing things - so if you have the original source, then you can see that it's there.
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