This is a proprietary networking card for Apple II computers designed for use in school classrooms to allow network booting. It also included a second card to be installed in slot 1 for printer sharing.

Schematic

Slot 1 Printer Card Schematic

KiCad Project & all artifacts

The slot 1 printer card is very simple and just provides 256 bytes of RAM that a printer driver can be loaded into.

The network card itself has two DB-25 connectors that carries a proprietary external 8-bit bus that can be daisy-chained between computers in a classroom. Each “Student” card in the network has a unique ID.

Front Image

Back Image

Slot 1 Printer Card Front Image

Slot 1 Printer Card Back Image