So I have a mill that has been lying around for years, its a 1997 160MC DOS based Open System It I replaced the dead batteries in the PC and the HSSB and it tries the boot up but just up in DOS Com error between the HSSB and PC, Fiber optic cable seems ok but it says missing file please install MMCSYS.EXE. Fanuc don't seem to be any help, any ideas would be a shame to scrap the machine it's an Okada Graphite mill 25000rpm.
Thanks.