DraCo has no memory at all at zero address, unless the AmigaOS MMU setup is still active,
and then it's only virtual.
DraCo memory starts at 0x4000 0000, 0x4200 0000, 0x4400 0000, 0x4600 0000,
with at least 4 MB in the first slot, and not more than 32 MB in each slot.
The AmigaOS MMU table is somewhere in the first 2 MB.
A full 128 MB DraCo looks like this with NetBSD:
memory segment 0 at 40000000 size 00200000
memory segment 1 at 40200000 size 07e00000
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