What’s the interface between MacTCP/OT and an Ethernet card?

[Zane Kaminski]

One of the next steps on my rather tentative ESP32-based network card concept is to figure out what API an Ethernet card has to implement.

I haven’t dumped the list of device drivers on one of my Macs with NuBus Ethernet but I suspect that Ethernet driver puts an entry in the system device queue to which you make the typical Open/Close/Prime/Control/Status calls. Is this correct? And if so then what are the particulars of the API? How do you identify that a particular device installed in the system is actually an Ethernet card? And what calls do you do to send/receive packets?

Once I know this I can devise a protocol so that the requests can be forwarded to the ESP32

 

[alxlab]

OOOOooo would be nice to have a new comm slot 1 and 2 network card based on this

Got this from Inside Macintosh Network book:

Sounds like the LAP Manager Interface is the way to go?

Chapters 10 and 11 seem like the most relevant:
http://mirror.informatimago.com/next/developer.apple.com/documentation/mac/pdf/Networking/pdf.html

 

[Zane Kaminski]

Thank you!!! I will look soon. I forgot about the later IM series. I was looking through the original six, designing cards and drivers, etc.