Ali - you bet I will! =P Chuck - thanks for the notes. I have no idea what it actually came from but I imagine it did come with a Display writer system. No problem with the format in which the data is stored, I can always present a more reasonable storage interface to the user via FTP or something. EBCDIC conversion or simply writing arbitrary bits is fine with me. On Tue, Feb 19, 2019, 1:54 PM Chuck Guzis via cctalk < cctalk at classiccmp.org wrote: > On 2/19/19 8:48 AM, Anders Nelson via cctalk wrote: > > Hi friends, > > > > Now that I have my glorious disk toaster (2D model I think, says "2D" on > > the drive levers), I want to build a controller for it. I found pinouts > and > > some description of the media organization here: > > > > > http://bitsavers.trailing-edge.com/pdf/ibm/6580_Displaywriter/S241-6248-3_D… > > > > I'd like to actually store data to these disks in the same manner the > > original systems did, and I'm proficient in hardware/firmware. Has > anyone > > made a controller for this already? How about emulating the filesystem? > > > > Any help is appreciated, and I'd open-source whatever I make (PCBs, > > firmware, etc.). > > Are you talking about the disk unit for the Displaywriter (6580)? > > Those don't use what you'd call a general-purpose filesystem in their > native mode (although there was a version of CP/M 86). The DW > filesystem is very specific to that word-processing application and > probably not useful for general-purpose applications. And, of course, > the character code used is EBCDIC. > > --Chuck > > >