The schematic of the Apple controller is in the Apple DOS manual, but it may not be of much help, as it requires a prom , the content of which isn't in the schematic. You might check wiht Eric Smith, as I would easily believe that he might have such information. The Apple controller, PROM and all would, by the way, EASILY fit in a CPLD/FPGA, which might save no little wiring, etc. If you can't get this schematic anywhere else, let me know and I'll make and send you a scan. Dick ----- Original Message ----- From: "Philip Pemberton" <philpem(a)btinternet.com> To: <classiccmp(a)classiccmp.org> Sent: Tuesday, January 23, 2001 12:50 PM Subject: Apple Floppy Controller schematic - anyone? my I