I found this at the local ewaste recycler (eCyclers of Idaho in Idaho Falls, Idaho) and took it home since I was curious about it. I could find very little about the computer online other than it was some sort of "BS medical device". After a few quick fixes (blown fuse and a wiring issue), I powered the machine on to see what all it would do.... and it didnt do much. It started to seek on the floppy drive and the monitor showed garbage.
At this point, I decided to tear further in to the system. Inside, ther was a linear power supply, a monitor capable of displaying composite images, and two MTU boards. Doing a bit of searching on these two boards, I was able to determine that they came from an MTU-130 system. The main board is what MTU called "monomeg", it was a neat 6502 based board featuring 80kb of RAM. One interesting thing that I read, is that this board has some sort of extended 18bit address bus allowing up to 256K of address space.
Here is a little more information about the setup inside of the Accupath 1000:
There are three ROMs between the main board and floppy controller board. both of the ROMs on the main board are used as decoders (256x4, MMI6301) from what I can tell, while the ROM on the floppy drive controller (256x8) actually bootstraps the system.
During boot strap, nothing is show on the screen (they only have 256 bytes afterall) except the current RAM contents that the video system is using. The ROM seeks an image off of the floppy drive, loads it to RAM, and jumps to it. I will get this ROM dumped and disassembled soon.
The floppy disk drive is a Qume Qumetrak 542. After disassembling the ROM, I hope to be able to load some sort of monitor via floppy disk.