Re: Inverse Problem on Contiki - JPG File attached

[Robert Steinmetz <not-rsteinmetz@mindspring.com>]

Glenn Jones wrote:

> "Simon Williams" <see_sig_for_valid_email@no.spam> wrote in message
> 1ga9zor.1riws1xqmnebkN%see_sig_for_valid_email@no.spam">news:1ga9zor.1riws1xqmnebkN%see_sig_for_valid_email@no.spam...
>
> > Glenn Jones <rg.jones@rogers.com> wrote:
> >
> >
> > > Has anybody else figured out what the problem is with highlighted text
> > > (Inverse) on the Apple II port of Contiki?

Contiki has a status line/menu bar across the top of 
the screen. That doesn't seem to be written correctly 
in your screen shot. I'd bet that that is what is 
causing the problem.

> I think there has been for quite awhile but with no network support

There is no network support because there is no 
support in cc65 or any network devices or for the 
apple serial port for slip. There may be some function 
missing from the Apple ][ libraries in cc65. Perhaps 
you could build a driver for your ethernet card, you 
seem pretty close to getting it to work.

> I guess it was never updated on Adams site? 

Maybe you can send him your screen shot and he can 
update the site.

> I used the V1.0 source. The 1.1 archive
> does not seems to support the Apple II directly anymore ...anyway I went
> with the older version

I wonder why?. Did you try to compile it? As far as I 
could tell the only thing necessary to compile under 
cc65 was to tell it you wanted an Apple ][ binary.

> All I did was download the V1.0 source, cc65 and a windows make binary. I
> looked through Google and found previous posts from Chris and others about
> the problems they encountered and I applied their suggestions to the source
> code and was able to compile it. The screen shot you see is that code
> running on kegs.
>
> Lets see ..I found and applied the following info
>
> 1) I modifed the apple2.h file in /cc65/include/apple2.h from #define
> CH_CURS_DOWN  0x0A to #define CH_CURS_DOWN  0x0D

This corrects something in the cc65 library.

> 2) I added the following code to /contiki/ek.dispatcher.c
> /*--------------------------------------------------------------------------
> ---------*/
> clock_t clock(void)
> {
>  static clock_t fake;
>  return fake++;
> }
> /*--------------------------------------------------------------------------
> ---------*/

This for a function missing in the cc65 apple ][ 
libraries. There is a function in the C64 which 
generates a clock signal. It is used by Contiki for 
networking timeouts. To get networking to work you may 
need to elaborate this function. Ideally add it to the 
cc65 Apple ][ library. The problem is that there are 
many ways to do and it depends on the hardware in the 
apple. Your ethernet card may also have something with 
these functions built into it.

> 3) I added the constant #define CLK_TCK 1 to /contiki/arch/cc65/ctk-conio.h
> (I know this is wrong and havn't bothered to figure out the correct value
> yet)

I believe that this will be a trial and error, and 
will depend on the actual implementation of the timing 
loop and the hardware.
> I think that was about it ... I used Ciderpress to add the resulting binary
> to a PRODOS 140K disk image. Make the type BIN. I have run it on AppleWin
> and Kegs. Under prodos you need to bload contiki,a$800 then call-151 and do
> a 7FC<800.5000M .... 800G
>
> Next on the list is the inverse problem ....I could not find anything on the
> various mailing lists or Goolge about that so far.
>
> btw it works in 40 or 80 column mode
>
> Glenn
>  

I hope this helps.

Thanks for posting this I tried to do this when 
Contiki first came out but my 6502 and C knowledge was 
inadequate.

--
Rob

"Never ascribe to malice that which can adequately be 
explained by stupidity."