I believe detection of math coprocessor is often done by either calling
INT 0x11 (result in AX) or reading the 16-bits at 0x40:0x10. Bit 1 being
the truth flag of the processor's presence. There are other ways of
finding out too.
Louis
---------------------------------------------------------
"So what are you gonna put on your resume...DUMB ASS?!?!"
- Red Foreman of That '70s Show
On Fri, 30 Jul 1999, Greg Haerr wrote:
> On Friday, July 30, 1999 10:31 AM, Eric J. Korpela [SMTP:[EMAIL PROTECTED]]
>wrote:
> : > ELKS doesn't yet support floating point. The bcc compiler libraries have
> : > support for 32 bit floating point though. All ELKS float support will have
> : > to come from bcc primarily, unless you're talking about OS support of math
> : > coprocessors...
> :
> : On machines with coprocessors the the coprocessor state needs to be saved
> : with the rest of the process context. Isn't being done now. Problem is it
> : makes the context bigger and the swap longer. How long is an FSAVE on an
> : 8087?
> :
> I see. Does anyone have any code for auto-detection of an 8087/8287/8387?
>
> Admittedly ELKS probably doesn't need FP, but my MicroWindows main demo
> does have a 3d graphics demo that requires floating point, it'd still be nice to run
>it ;-)
>
> gh
>
