Hi,

Today I was asked if a port to the C128 would be possible.



This turned out to be as true as I had thought. It took me literally 5 minutes to get Contiki 2.1 built as native C128 program and running on VICE in C128 mode

Again I have about no knowledge on CBMs but after reading the Wikipedia article on the C128 I understood that it might be desirable to switch to 80 column mode and switch then to 2MHz.

As the cc65 C-Library has already C-callable functions for doing so I added both on Contiki startup - and switching back to 1MHz and 40 column mode on Contiki exit. Works everything as expected on VICE - another 10 minutes

But before making this an "offical" part of Contiki 2.x I'd like to understand about the Ethernet options in native C128 mode. Are the Ethernet chip ports mapped to the same addresses? Are they visible at all? Other things I can't even imagine?

Is there somebody capable and willing to test Contiki 2.x with the "right" Ethernet hardware on a C128 in native mode?

Thanks in advance for your input !

Best, Oliver

Okay I solved the riddle . Contiki 1.2 contains outside the CS8900A driver code which is shared between RR-Net and TFE (where I didn't expect it) this RR-Net specific sequence:

lda #1
ora $de01
sta $de01

@Devia: Thanks for the detailed description - although I didn't understand it yet after reading only three times...

Would it be acceptable by "this community" if I'd just add the sequence above - and thus bring back the same functionality/compatibility present in Contiki 1.2 ?

Best, Oliver

The RR-Net driver should be responsible for properly enabling the clockport IMHO. Problem is that the RR-Net driver also needs to know if the RR-Net sits on a Retro Replay, MMC64 or other device to initialize it properly. I guess a clean way would be to make a separate "meta driver" for all devices which is responsible for initialize the clockport and then make the RR-Net driver request initialization by the meta driver. Maybe it sounds like over doing it but I think it sounds more complicated than it really is ...

The dreamload plugin for mmc64 which is lively discussed here offers the functionality to use the mmc64 as a regular diskdrive, I guess it does so by changing the vectors that point to the load routines etc. So software which only uses the kernal routines for disk access can run from mmc64 instead of disk.

I just tested running guruterm with the rr-net connected directly to the mmc64 and it works fine, and afaik guruterm uses uip so perhaps raveguru can offer some help with getting contiki to run with the different hardware setups?

Hi Oliver,

I'd love to test Contikit 2.x with my 128 and RR-Net (Retro-Replay & MMC).

With regards to my "other" NIC, it doesn't require or use a clockport so there's no need to write $01 to $de01.

Cheers
Fotios

Regarding MMC64 - Dreamload Plugin: Thanks for the hint and explanation. Now I kind of understand the question but I have no idea how to find the answer. The only thing I know for sure is that Contiki 2.1 only uses the cc65 C-Library open/read/close calls to access the disk. This definitively needs someone else to get solved.

Regarding Clockport setup: Thanks for the hint. I'll try to understand that topic better...

Best, Oliver

It just keeps getting better.

Now to make it work. |-)

_________________
Have Fun!!

Other NIC my heart just skipped a beat.

Will it be a HAPPY XMAS ??

_________________
Have Fun!!

Hopefully I did - at least for a "plain" RR+RR-Net combo .

I just uploaded two images, one for the C64 and one for the C128 (native mode, 80 column, 2MHz).

It would be great if I could get feedback on both...

Good night, Oliver

Congratulations! The C64 version of Contiki 2.1 works fine with my RR+RR-Net combo.

Unfortunately, the C128 version does not. While it loads fine, the default web page times out.

Regards
Fotios

Great its working i am changing the default webpage now.

Check it out at http://www.c64web.com

It might go up and down as i change the web page.

Thanks Oliver

_________________
Have Fun!!

I have confirmed same not working a c128d with RetroReplay/RRNet.

_________________
Have Fun!!

Does your rr-net work with other software on your c128d? It doesnt on mine and I know that more people have the same problem.

No it does not for instance it would not run contiki v1.2 etc in c64 mode or 128 mode.

_________________
Have Fun!!

I'm using the cs8900a driver from contiki 1.2 without any modifications IIRC, however I do detect and initialize the clockport first for RR and MMC64, kind of like Devia suggested but my code is much less sophisticated