Hi everybody,
I have a question maybe some PC expert can answer:
I have an ISA card, that uses only IO mem, jumpered at 0xd000
(options are hex c000, c400, c800, cc00, d000, d400, d800, dc00),
but I had thought that ISA cards' memory should be mapped into > 640k
Anyway, attempting to ioremap the 0xd000 give a null pointer, and
checking the region (check_mem_region) returns busy ("System RAM" owns it,
and it is IORESOURCE_BUSY).
Is the card manufacturer on crack, or am I missing something?
Assuming I have complete control over the hardware(i.e. I can
ascertain no other hardware is mapped at that location), and I can
find my card, is it safe to access it anyway (presumably with isa_writeb
and friends)?
Dave
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