Japheth has updated HimemX (XMSv3, 386+) to version 3.35. "Currently there are 2 versions of HimemX supplied, HimemX and HimemX2. HimemX2 uses a different strategy when it comes to extended memory block allocations. This difference is only relevant if extended memory is scattered in multiple blocks, as it is the case on newer machines." Grab the binaries and sources at iBiblio or on his Github. Testers across various hardware welcome!