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   comp.sys.apple2      Discussion about Apple II micros      56,720 messages   

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   Message 55,718 of 56,720   
   Anthony Ortiz to All   
   Re: WDC 65C832 design in today's world   
   18 Aug 22 16:10:03   
   
   40655976   
   From: anthonypaulo@gmail.com   
      
   > So, if I understand correctly, the suggestion was to use an ARM processor    
   > (cheap and readily available) to support a 32 bit GS/OS , rather than build    
   > a further extension to the 6502 family, incurring development costs (both    
   > hardware and software) and then either remaining content with low volumes    
   > (and high prices) or engaging in a battle to push into a space already    
   > occupied by the x86 and ARM ‘gorillas’. Even the ARM processors   
   available    
   > back when this discussion was conducted had enough power to emulate a 6502    
   > and maybe even a 65816, but one could also have a system with both, similar    
   > to those machines with Z80 cards.    
   >    
   > WDC seem to do sufficiently well continuing to sell 6502 and 65816 chips    
   > and cores for embedded systems that they haven’t seen the benefit in    
   > pursuing the 65832 concept.   
      
   Okay, so assuming we're talking about an ARM emulating a 6502, which is   
   something that has been done and I've done myself, then nothing prevents us   
   from emulating the 65C816, and if we can do that then we can emulate the   
   65832, or create a true 32-bit    
   version of the 65C816. This is what I'm thinking to do with my little   
   Raspberry Pi project, I'm using my Raspberry Pi as an accelerator ( ie. a   
   turbo version of the Transwarp) hence all my questions here about bus timings,   
   but I'd also like to make it so    
   you can choose the chip to emulate and add a 32-bit mode either by emulating   
   the 65832 or creating a 32-bit version of the 65C816.    
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

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