Hi again, Is there a description of the DW filesystem somewhere I can look at?
On Tue, Feb 19, 2019, 2:11 PM Anders Nelson <anders.k.nel...@gmail.com wrote: > 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@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_Displaywriter_6360_6580_Product_Support_Manual_Feb1983.pdf >> > >> > 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 >> >> >>
