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Re: The Internet-enabled Contiki Desktop OS

In comp.sys.cbm Adam Dunkels <adam@dunkels.net> wrote:
> Ullrich von Bassewitz have already started adding code to cc65 which
> makes use of the 2MHz even in C64 mode... :-)

Unfortunately, this won't work well together with the RS232 routines. Since
the VIC has not enough cycles left to display anything in 2MHz mode, slow mode
must be enabled when the VIC draws on the visible screen. This is done using
raster interrupts. Since the RS232 routines are using the non maskable
interrupt, this will destroy the timing needed to make the (partial) 2MHz mode
work.

Regards


        Uz


-- 
Ullrich von Bassewitz                  uz@remove-to-reply.musoftware.de
 12:23pm  up 34 days, 20:19, 12 users,  load average: 0.00, 0.01, 0.06