Re: Accelerator //e

[supertimer@aol.com (Supertimer)]

Jonathan Schattke <wizwom@ripco.com> wrote:

>Unless there was a strange modificatio to the chipsets since the
>mid-80s, an 8Mhz 65x should perform as fast as a 25Mhz 16-bit Intel
>processor, sheerly in terms of bus speed. (both would transfer
>16MB/sec).  The 65816 has the same internal math that a 286 has.  So the
>chip that would be the "same" as a 65816-8 is the 286-25. 
>Coincidentally, both were released at about the same time.
>Both chips maintain back-compatability to 8 bit processors.

Jonathan, that's what my tests show too.  An unaccelerated GS runs
as fast as an AT from IBM.  This is an old AT, the 6Mhz version, so
it is a 286 at roughly double in terms of Mhz the 65816 in a stock GS.
Yet the run the computers at about the same speed.  The 286 was
tested with both CGA and Hercules video cards, so it was moving no
more screen data (less actually) than the GS was.

Like I observed earlier, the 65816 is most comparable to the 286.