Homebrew 6502 controlling a Floppy Disk Drive

Let's build a CPU interface to allow a 6502 homebrew computer to control a Floppy Disk Drive! Previously I made a simple read controller and hooked it up to an Arduino - this time we'll focus more on the drive control signals, for things like turning the motor on and stepping the heads. The code is in github at https://github.com/gfoot/floppydisc6502, commit 69aeaf7 corresponds to this video. 00:00 Introduction 00:18 Architecture 00:58 CPU Interface module 05:38 Circuit design 06:36 Circuit design - outputs 08:40 Circuit design - inputs 09:36 Circuit design - decoding 12:48 Building the hardware 23:30 Writing test software 39:19 Trying it out 42:54 Nostalgic floppy drive sounds