Ethernet for PCjr {WizNet}

[Brutman]

Because WiFi is a bit more complicated than wired Ethernet. Getting all of the code to properly associate with access points does not look trivial. And attaching to a secured network with WPA is far more onerous.

[Shaos]

I came back

https://hackaday.io/project/163856-pcjrnet

Sorry for long absence - it took time to re-locate and settle in a new place (I moved from NY to CO during 2017 and still moving boxes around)

[Trixter]

Nice writeup so far!

[Shaos]

Nice writeup so far!

Thank you, I simply repeated everything from 2 years ago to make sure I don't forget to finish it in near future

[Shaos]

This is modem that I will switch with Ethernet



I bought it to measure dimensions and properly copy its shape...

[Shaos]

Current status

[Shaos]

For user from PC it will look like this:

Code: Select all

3F8h - register MR of W5100 (indirect mode flag and auto-increment flag)
3F9h - register IDM_AR0 of W5100 (most significant byte of the address)
3FAh - register IDM_AR1 of W5100 (least significant byte of the address)
3FBh - register IDM_DR of W5100 (data register to read/write in indirect mode)
3FCh - reserved for future
3FDh - reserved for future
3FEh - reserved for future
3FFh - reserved for future

More details about W5100: https://www.wiznet.io/wp-content/upload ... v1.2.7.pdf

[Shaos]

Fitting inside:

[Brutman]

(I'm not getting forum notifications ... yet another thing to debug.)

The WizNet looks like it has a TCP/IP stack built in. Can it be told to just send and receive raw packets? mTCP and other existing networking software just needs the ability to send and receive raw packets; they are not designed for use with things that offload the TCP part.


Mike

[Shaos]

It looks like newer WizNET chips can do that - this one is not
For now it's just trying a concept - if it will work out well then we can try better approach