hacking VPW2 and need some RAM for whatever purposes?
here's a list of some locations, as well as some notes.

location ranges are inclusive.

------------------+------------+------------------------------------------------
Location Range    | Num. Bytes | Notes
------------------+------------+------------------------------------------------
80056FE8-80056FEF | 8          | just after some filetable variables
800571E8-800571EF | 8          |
800571F8-800571FF | 8          | just after some bit packing/unpacking vars
80175B70-8017913F | 13776      | gameplay only! see further notes below
80179140-801791FF | 192        | hole between the end of seg002 BSS and aki_malloc space
8010C640-8010C648 | 8          | seg000 (anything but gameplay); uncertain
------------------+------------+------------------------------------------------

[80175B70-8017913F]
DURING GAMEPLAY ONLY!

hole between end of seg003 BSS and aki_malloc space

[80179140-801791FF]
data persists between resets