I found the page on the wiki explaining DCD/DSR along with the other flow control quirks. Once I corrected that, it started behaving correctly.
I'll look into that TPDD Arduino project, since that happens to be the same platform I'm using for my emulator. It kind of feels like I'm re-inventing the wheel, but there are some features I'd like to add to my emulator that that project lacks. Thanks for all of the extra info! I shouldn't have as much reverse-engineering to do now. On Tue, Jul 17, 2018, 20:54 Kurt McCullum <ku...@fastmail.com> wrote: > Sorry guys, but I'm jumping up on the soap box for this one. I'm quite > stunned by this email. > > First, there is the official protocol put out by Tandy "Software Manual > For Portable Disk Drive" 26-3808 > http://manx-docs.org/mirror/harte/Radio%20Shack/TRS-80%20Model%20100%20Portable%20Disk.pdf > There is a full writeup on bitchin100.com > http://bitchin100.com/wiki/index.php?title=TPDD_Base_Protocol > And if that's not enough there is the TPDD2 sector access protocol writeup > www.club100.org/memfiles/index.php?action=downloadfile&filename=TPDD2-Sector%20Access.txt&directory=Kurt%20McCullum/TPDD%20Client& > > To suggest that somehow those of us who have created TPDD emulators are > somehow hiding that information is silly. Ken and John have done a huge > amount of work and documentation and that has been for the 'benefit' of the > Model-T community. LaddieAlpha/mComm/Desklink and more are freely available > for the 'benefit' of the Model-T community. If others want to create a low > cost TPDD emulator, I'm all for it. > > We are not hiding any secrets here. Stepping down from the soap box now. > > Kurt > > > On Tue, Jul 17, 2018, at 4:37 PM, John Gardner wrote: > > How about those who've benefited from the research of others, > > or even the researchers themselves, publishing the protocol? > > Nah... "8) > > >
