Dumping MC6801 ROM contents.

I have been asked to dump the ROM contents out of the MC6801 in the Ericsson PC keyboard to get the MAME emulation fully working. The guy that is doing the emulation says this is the only thing missing and would be nice if I could help him getting it finalized. It is supposed to be quite easy. Put the MC6801 in test mode 0 and provide RESET vectors for an external EPROM that has a program that dumps the contents. Maybe in Intel HEX over the serial port. Should be quite straight forward. But I have thousands of other things to deal with so if someone already made such a small program I gladly use it instead of making my own. Even though I done some 6800 and 6809 assembler once upon a time, it was 30 years ago, so I imagine it will take some time to get it working. Is there anyone that already done this? /Mattis