Ralle Pa has announced the release of an updated version of the 512 KB NVRAM Drive Card for the Apple II computer. According to the posting on FaceBook, the newer version uses one less chip than the older version. This card is a ProDOS based card and uses a special protocol to write to the card via a newly released driver for the card.
Ralle has released all of the schematics and related files to the public through his Github Page at:
https://github.com/rallepalaveev/Prodos-512kB-NVRAM-Drive
