[Coco] Re: [Color Computer] 68881/68882 & the CoCo

Alex Evans alxevans at concentric.net
Wed Feb 8 17:26:26 EST 2006


On Feb 8, 2006, at 12:19 PM, Mike Pepe wrote:

> Gene, sounds like you're on my wavelength.
>
> I'm not sure how practical this is, but the bus interface seems
> straightforward, though completely emulating the 68020 co-processor
> protocol would be difficult-- but probably not necessary.
>
> I'm just curious to see if it can be done. It may prove to be an
> interesting experiment to see how much faster the FPU is than the math
> library.

Quite a number of years ago, there was someone on the listserv who  
had claimed to have connected a 68881 to his CoCo.  Supposedly there  
is an 8-bit mode for it (I guess so that you can attach it to a  
60008), and even a simpler mapping mode than the normal 68020 mode.





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