Z80 home brew with FDC

Allison wrote: I worked with many different 179x-based floppy controllers at a job from 1980-1982, and my experience was that the only ones that worked consistently and reliably were the ones that used a PLL. Many of the non-PLL ones weren't even completely reliable reading disks written by the same drive and controller. That's why ALL of the later followons to the 179x and 765 that had internal data separators used PLLs (either analog or digital). I'd be extremely reluctant to use a controller with a non-PLL data separator even if I NEVER needed to read floppy disks that were written on other people's disk drives. I haven't had any trouble locating the 9216 and 9229 as recently as last year. Naturally you won't find them from distributors since they were discontinued more than ten years ago, but there are still plenty available from resellers and (spit!) brokers. So when you find a piece of old software on an floppy disk, how exactly are you going to shove that into your CF reader? Eric