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