> unsigned long dpaddr=0xD000; /* address of dual port RAM */
> <snip, snip>
> rom = (ACL_ROM *) MK_FP((dpaddr >> 4), 0); /* make a far pointer to
> the dual port */
That looks wrong (it produces a pointer of 0d00:0000). It looks like the
first line has a 0 missing, which would make the linear address 0x000d0000
and the segmented address d000:0000 where it is quite probable to actually
find a ROM.
> What would the equivialent be to the above statement in the Linux universe.
Well, dpaddr looks like it's supposed to be the physical address, so you'd
say something like
rom = phys_to_virt(dpaddr); /* map into a virtual address */
BUT see Documentation/IO-mapping.txt if perhaps you need to use readb()
and friends instead.
HOWEVER, if the first line above actually *is* the correct address, then
you're in serious trouble, because that's in the first 64kB of RAM, and
what's there is *completely* different between DOS and Linux.
MfG Kai
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