Math coprocessor
When writing code using a hardware math FPU, can I simply include the
instructions inline in my code, or do I need to obtain some kind of lock
on the FPU? How does the exec task switching know whose program is using
the FPU at any time? Or does it even need to know?
I was under the impression that the FPU ran asynchronously with the main
processor, in which case, the calling routine could be suspended at any
time and another program might take over the use of the FPU at an
inappropriate moment for it.
Regards,
Shraddhan (via AP at last from Hertfordshire, England)