dhavill@rucs2.sunlab.cs.runet.edu (A. David Havill) (05/09/91)
I use a 80386 (not an SX) paired with a 387 math chip. The 386 runs at 20Mhz.
There is an option on my motherboad that allows one to use either a 16Mhz or
20Mhz math chip with the removal or insertion of a jumper.
The problem is that I can't really confirm whether the 387 is working at 16Mhz
or if it's operating at 20 Mhz, which is what it's rated for.
My question is this-- are there any programs or subroutines which rate the
speed of a math chip? (preferably in ratios to existing math chips-- a ratio
compared to a 16Mhz 387 would be great) Many programs exist on the market to
test PC relative speeds and MIP ratings... but I can't find anything for 87s.
While program code is nice, I'd appreciate any tips I can get as to how I
can tell if it's running up to speed. Yeah, I know I could check the manual to
see how the jumper is set-- but my manual has been wrong before when it came
to jumper settings. My system is an ALR 386/220.
--
+--------------------------------------------------+ Adrian "David" Havill
| "I have no meaningful quotes." -- me. | dhavill@rucs2-gw.runet.edu
+--------------------------------------------------+ my opinions are not RU'sgettys@yacht.enet.dec.com (Bob Gettys) (05/09/91)
One of the benchmarks in Checkit (a commercial program) tells you what the speed is of your math processing - 80x87 or not. It reports in Whetstones so telling the speed is not easy, but it would allow you to set it for the faster one. /s/ Bob Gettys