what the heck!? (bodged eurocard system)

Any ideas what system these boards are for? http://www.moosenet.demon.co.uk/temp/comps/eurocard (sorry for bad photos - in a rush!) Looks to have been homebrewed into an XT clone case. Bus connectors are 96 way. Memory card DRAMS are 21256's, so I presume that's 1MB on the board. CPU card has a Z80B on board plus memory - and a D765 IC, which I think is an FDC chip IIRC. ROM is labelled "Prof MON 1.3" Larger chips on the I/O board are a 6845 CTRC, 8255 (PIA IIRC), Mostek MK3801 (no idea!), Z80A CPU, 6116 SRAM, and a EPROM (with no label). There's a homebrew card right at the back with nothing much more than a ROM on it - unfortunately I can't read the handwritten label, but the first three letters are "tas". Anyone able to tell me what the machine is or anything about it? cheers, Jules