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

[Alex Evans]

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.