[Coco] VCC v1.42 Question

[Stephen Pereira]

OK!  Here is what I finally figured out:

In the Config dialog box, on the CPU tab, the slider selects what the apparent speed of the CPU will be after you perform a POKE &HFFD9,1.

Leaving the slider in the leftmost position selects 1.788 MHz, and moving the slider to the right selects increasing clock speeds.  After setting the slider, no change takes place until you perform the POKE command.  After the POKE command, I see the CPU clock is set for the new speed that I set with the slider.

Mystery (for me) solved!

Thanks very much, again, folks for listening.

smp
--
Stephen M. Pereira
Bedford, NH  03110
KB1SXE


> On Feb 14, 2015, at 2:42 PM, Stephen Pereira <spereira1952 at comcast.net> wrote:
> 
> Hi Nick and Art,
> 
> Thanks very much for your responses.
> 
> Yes, I can do the POKE &HFFD9,1 and get that to work.
> 
> I am just being confused because in the Config dialog box, on the CPU tab, it appears to me that setting the CPU overclocking to 1.788 MHz is an option.  I just cannot get that option to work…
> 
> Oh, well, I guess I’ll just have to do it the old fashioned way!
> 
> Thanks again.  I really appreciate the support you folks offer.
> 
> smp
> --
> Stephen M. Pereira
> Bedford, NH  03110
> KB1SXE
> 
> 
>> On Feb 14, 2015, at 2:29 PM, Arthur Flexser <flexser at fiu.edu <mailto:flexser at fiu.edu>> wrote:
>> 
>> Why not just get it to double speed with a poke to $FFD9?  It may not be a
>> special option in VCC because it is available the 'ordinary' way.
>> 
>> Art
>> 
>> On Sat, Feb 14, 2015 at 2:24 PM, Stephen Pereira <spereira1952 at comcast.net <mailto:spereira1952 at comcast.net>>
>> wrote:
>> 
>>> Hello all,
>>> 
>>> I have VCC version 1.42 running on my MacBook Pro, under Parallels running
>>> Windows XP SP3.
>>> 
>>> I have not used it a whole lot, but it seems to work fine in general.
>>> 
>>> Recently, I tried out my new Color Forth as modified for DECB, to be sure
>>> that it worked as it does on my real physical CoCo 3 system.  Everything
>>> works as I expected.
>>> 
>>> I noticed that VCC reports that it is running a 6809 CPU at 0.89 MHz.  I
>>> have tried and tried to get the Config to set the CoCo to 1.788 MHz, but I
>>> cannot get that to happen.  I can go to the Display portion of Config and
>>> uncheck the “Throttle Speed” checkbox and get the emulation to go a super
>>> speed, but all I want to do is emulate my physical CoCo 3 which is running
>>> at double speed with an HDBDOS cartridge.
>>> 
>>> What am I missing?  Is there something else that I have to do to get the
>>> overclocking to work properly?
>>> 
>>> Thanks, in advance, for your patience and attention.
>>> 
>>> smp
>>> --
>>> Stephen M. Pereira
>>> Bedford, NH  03110
>>> KB1SXE
>>> 
>>> 
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>>> 
>> 
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