On 2/27/24 15:43, Wayne S via cctalk wrote: > I know you do this for a living and are good at it. Most of us don’t do it as > a living but have piles of floppies that we want to recover cheaply using an > existing method. Grease, cat and other wezels, are fine but you have to do > more work to get usable stuff, unless your floppies are all c64 😀 The > applesauce just seems further along than the others. > Just my opinion.
To be fair, the OP was talking about replacing the WD disk controller. As far as I know, WD 17xx and 27xx controllers can do FM and MFM. Heck, they can't even do M2FM. A small exception. Back in the 1970s, we did do GCR using the WD1781, which is basically a 1771 without the modulation appendages. And even then, it took a Multibus-sized board to implement the scheme. --Chuck
