[Coco] What would a CoCo successor have to have as a minimum?

[jdaggett at gate.net]

On 22 Nov 2010 at 20:42, William Astle wrote:

> On 10-11-22 07:26 PM, Mark McDougall wrote:
> > On 23/11/2010 11:31 AM, Theodore (Alex) Evans wrote:
> >
> >> If one wants to get pedantic, 8ns giving you 125MHz is only 4x faster
> >> than
> >> 25MHz, not 5x faster.
> >
> > Damn, my stupid calculator is broken, it _insists_ that 125/25=5, not 4! :(
> 
> <pedantism>
> 

pendantism or not my caluculator and my conservative school of mathematics says the 
125/25=5. I know this is not a second order partial differential equation that needs solving, 
but I think my intent was to mention that the clock speeds of the two were differentiated by a 
factor of 5. Now if that is 5x or pendantic 4x I will let that rest with the court of public opinion. 
In my judgement it is a clock difference of 5 times and that satisfies my dimly lit logic.

james

> 5 times more means the difference is five times. Thus, 5 times more than 
> X is actually *6* times X. So 125 is 5 times *as much* as 25 but 4 times 
> *more* than 25.
> 
> In other words, for the "times more" calculation, you first get the 
> difference (125-25 = 100) then divide. So (125-25)/25.
> 
> </pedantism>
> 
> >
> >> especially since there is nothing stopping you from giving the video
> >> side 32
> >> bit access even with no changes to the CPU.
> >
> > ...except for the minor fact that you don't have 32-bit memory...
> >
> >> If we are modifying the 6x09 CPU, I would like to see support for 24
> >> or 32
> >> bit addresses in the CPU and a true 16-bit ALU, and yes a wider data bus
> >> would be nice too. To support all this there would have to be another CPU
> >> mode because at the very least it would mess up the stack.
> >
> > Surely that's just a matter of changing the port widths on John Kent's
> > CPU09 core... right John? Maybe you should've used generics when you
> > wrote it!?!
> >
> > Sorry to be sarcastic Alex, I couldn't help myself. But you do have a
> > tendency to over-simplify everything.
> >
> > Regards,
> >
> 
> 
> -- 
> William Astle
> lost at l-w.ca
> 
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