Re: [cc65] two little bugs

From: Ullrich von Bassewitz <>
Date: 2009-08-24 23:17:34
On Mon, Aug 24, 2009 at 12:00:13PM -0400, Greg King wrote:
> A hardware-reset stops all of the timers in the CIA chip.  After that, the
> Time-Of-Day clock will not run until you have written a time into it.  The
> firmware does not write into those registers.  [Even though BASIC's rnd(0)
> reads some of  those registers in CIA1 -- see the entry for location 57495
> in the "MAPPING THE Commodore 64" book.]

I cannot find anything about that in the data sheet. Yes, the timer control
registers are set to zero on reset, which means that both timers are halted -
but there is no start/stop bit for the TOD clock.

Has anybody tried the test program with another VICE version? I'm still
wondering if it's a cc65 related problem or not. A more current version of
vice is unavailable for Centos, so I would need to create one myself. After
installing 54 development packages, an opencbm rpm was not found, so I would
have to create this one beforehand, and that was the point where I stopped :-)



Ullrich von Bassewitz                        
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Received on Mon Aug 24 23:20:34 2009

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