HP 2647A / F Terminal

Thanks for the info, but that's a bummer since I have no software media with the 2647F that I have, and it might not be too likely that I will ever find any. My guess is that the difference between the 2647A and 2647F is that the A model uses tapes while the F model uses floppies. I have two 5.25" drives for my F model and it does not have tape drives, and apparently tapes were not options on the F model. I have an HP '84 catalog which lists the 2647F (at around $9000) but not the 2647A. Does anyone have a service manual for 264x terminals? If they have full schematics and firmware info at least I could try writing 8085 code to run on my 2647F if I find a copy of one. From looking inside it looks like it has 128KB of DRAM (must be paged somehow) and 12 ROM chips of unknown size. Also it looks like the floppy controller has it's own Z80 and ROM and a WD 1791 controller. This might make a interesting project (aka timesink) trying to figure out how it works and how to do someting with it other than use it as a terminal. I have a 264x loader rom in my HP 2117F so maybe I can get it load code from a floppy on the 2647F (it appears that you can set a file on a floppy to respond to tape commands). That would be another project in itself since I don't have any documentation on the 264x loader rom nor do I know if I even have a serial interface card that it supports. -Glen _________________________________________________________________ Get a speedy connection with MSN Broadband. Join now! http://resourcecenter.msn.com/access/plans/freeactivation.asp