On 1/10/23 15:24, Mike Katz via cctalk wrote: > I haven't seen any mention of greaseweazel types of "flux" readers. > They read the flux changes off of the floppy and then interpret them > with a separate program.
> Before the greaseweazel, and similar boards, there were the Catweasel > controllers, which are essentially the same thing, but done in an FPGA > with an ISA interface. Even then, I kept telling people that most > microcontrollers with a capture-mode timer would do the job for a > fraction of the cost. Personally, I've been using an STM32F407 with > my own software. It produces catweasel-files and works with my own > code written for catweasel. I probably made it overly complicated, as it uses DMA to record the capture events. At 168MHz on a pipelined architecture, I could have gone with polled I/O, but the deed is done. Even before the high-integration MCUs with everything but the kitchen sink, I was using an ATMega162 with external SRAM to do the sampling. It's not brain surgery. Chuck
