[fpc-devel] Improving i8086 performance..

[Jim Leonard]

On 12/27/2013 9:35 AM, Kostas Michalopoulos wrote:
> If you want to do speed tests, try some emulator. For example PicoXT
> (which emulates an XT clone):
> http://www.picofactory.com/free/software/pc-xt-emulator/

That emulator is not cycle-exact, so it doesn't have the same 
characteristics as the real hardware.  PCem comes closer, but is also 
not exact.

Because MUL/IMUL/DIV/IDIV on 808x has variable execution times based on 
the inputs, it is best for the OP to test on real hardware if he wants 
an accurate comparison.
-- 
Jim Leonard (trixter at oldskool.org)
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