Re: IIGS Acceleration Idea

["Bryan Parkoff" <none@nospam.net>]

<bieling@terra.es> wrote in message 
1138661356.911979.111650@g47g2000cwa.googlegroups.com">news:1138661356.911979.111650@g47g2000cwa.googlegroups.com...
> Bryan Parkoff ha escrito:
>>
>>     I have to say -- do 1 GHz (GigaHertz) crystal osc chip exist?  If so,
>> you will have to redesign Apple //e or Apple IIgs motherboard.  65816 CPU
>> will run at 1 GHz.
>
> Bryan,
>
> Is this year the a2's 30th anniversary...?
> An a2@1GHz==1000x faster, would be a nice way to celebrate it !!
>
> but...
>
> 65816@1GHz... where have you seen it ? The last time I checked wdc they
> had 20MHz parts.?
> Even if you had the most optimized better available 65816 ip core I
> think there's no way to sopc either as no current fpga will eat it
> @1GHz.?
> And, also, you would need a 2GHz memory bus for a 1GHz cpu clock !! (do
> memory dimms this fast exist yet ?) or about 10 or so cpu wait cycles
> (for a 100MHz memory bus) and then, it's of little (or no) use to run a
> 65xx cpu at 10X the memory bus speed...
> :-(
>
Hello,

    It is just our imaginary to come true which it would happen.  The fact 
is that WDC provides 65816 CPU which it limits to 14MHz while it can extend 
to maximum 20MHz.  If you want to run 1 GHz on 65816 CPU, you will need to 
redesign 65816 CPU to support 1 GHz.
    I do not need to say to prove if Michael Mahon is wrong, but try to 
imagine some ideas which it has never happened.  Try to say if Pentium 4 2-4 
GHz is faster, but it has worse performance because Intel can't outperform 
up to 20 GHz so they decide to redesign CPU to find other ways how to 
outperform.  It is the same example that 65816 CPU should be redesigned to 
outperform up to 100MHz and then try to do 1GHz.  Remember, it is only your 
imaginary

Bryan Parkoff