Apple-1 Floppy Disk Interface - "IEC Add-on" for microSD Storage card

Reference/Project Page: p-l4b.github.i...
SD OS 1.3 Reference Page: github.com/nip...
The "IEC Add-on" is a supplementary board for your "microSD Storage Card" that allows your Apple-1 to connect one or more compatible Floppy Disk Drive (or emulator, providing the usual Commodore Serial IEC Interface).
SD OS 1.3 provides all the commands needed to load and save your BASIC or ML programs. It also provides access to advanced drive features through a direct command mode.
The project is compatible also with Drive emulators such as Pi1541, the complete and up-to-date list of compatible devices can be found on the Reference page.
0:00 Introduction
0:35 Help & SD OS commands
1:00 BASIC interpreter loading
1:16 Example of BASIC program loading
2:00 Example of ML program loading
2:47 Saving my own BASIC program