i think i have mediator hal, from the old days when 0.4 was the only one available, i think cisc dcc'ed it to me to test if it worked or something.
I have no idea if its ok to share this hal, and i dont even know if its the real one, but atleast i have 2 hal's in the morphos dir hal.rom is 28982 bytes and from 10.03.2001 hal.rom_ is 29003 bytes and from 14.02.2001