Re: Ok, anyone started Contiki 4 AII yet?

[Rob <rsteinmetz@mindspring.com>]

Yves McDonald wrote:
> Some good news for //e, 2c users!  From a quick look in my //e Technical 
> book (Apple/Addison-Wesley edition), there is an interrupt associated 
> with Vertical Blanking (every 16ms) and OS interrupt support with ProDOS 8.

That works out to 62.5 HZ, very close to the default value for CLK_TCK. 
Are you sure it is exactly 16ms and not 16.67ms? That would be 60 HZ.

> The bad news: sorry for ][+ users but there are no built-in interrupt 
> sources, altough a clever hardware hack exists to get vertical retrace 
> interrupts (REF: Jim Sather, Understanding the Apple II, p.3-19 to 
> 3-26).  I guess Apple ][ users will have to provide their own  timer 
> interrupt services.

Oh well. I really really want to have Contiki running on my Apple ][ :-(

> Cheers,
>
> Yves

Thanks

--
Rob

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