The Chemstation software is Pascal-based. The disks use an unusual partitioning scheme. I used one of these Chemstations to run my GC and gas chromatograph-mass spectrometer for many many years. Mine were HP 9000-320 and 9000-340 machines ( I still have complete, functional machines with data on them here- they are in storage waiting for the data to be archived - that and I can't bring myself to get rid of them). These systems ran non-stop for ten years with only one floppy disk failure. Much more reliable than the PC stuff that replaced them. The display output is very hardware-specific; it is designed to work with only a limited number of frame buffers. I still have documentation on these systems, so if you want more details contact me off-list. On Thursday, March 6, 2003, at 03:55 PM, Joe wrote: Kenneth L. Marshall Research Engineer, Optical Materials Laboratory for Laser Energetics University of Rochester 250 East River Rd Rochester, NY 14623 Phone: (585)-275-8247 Fax: (585)-275-5960