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