fnf@unisoft.UUCP (12/21/85)
In article <409@aum.UUCP> freed@aum.UUCP (Erik Freed) writes: >how do you explain the much better drystone results of the ST? >(the compiler can not be the only thing responsible) > Don't be so sure. I have seen a beta test version of a compiler I can't name yet that gives the following results: Lattice "Brand-X" with registers 459 1041 without registers 454 980 with reg, file size 15680 5648 without reg, file size 15724 5808 boink + dry (regs) 112 236 robocity + dry (regs) 184 403 The file size differences may be due to symbol table sizes or some other factor. I didn't investigate. The "boink + dry" results is with boink running in the top half of the screen and a cli window in the bottom. There was no perceptable degradation in either the sound or speed of the ball. The "robocity + dry" was with robocity running in the bottom half of the screen and a cli window in the top. Note that under these conditions "brand-x" gave almost the same drystone results as the lattice version with nothing else running!. One interesting result is that boink is apparently much more of a CPU hog than robocity. -Fred =========================================================================== Fred Fish UniSoft Systems Inc, 739 Allston Way, Berkeley, CA 94710 USA {ucbvax,dual}!unisoft!fnf (415) 644 1230 TWX 11 910 366-2145 ===========================================================================
freed@aum.UUCP (Erik Freed) (12/22/85)
[stuff about compiler being responsible for bad drystone performance] > Don't be so sure. I have seen a beta test version of a compiler > I can't name yet that gives the following results: > Lattice "Brand-X" > > with registers 459 1041 > without registers 454 980 > with reg, file size 15680 5648 > without reg, file size 15724 5808 > boink + dry (regs) 112 236 > robocity + dry (regs) 184 403 That lattice compiler must really be awful. The 68000 is not exactly the most awful architecture to deal with... I stand corrected. This seems to prove that the hardware is not at fault. Just goes to show that the compiler writers of america are an uneven bunch and can make or break a product. How did Atari luck out an get such a seemingly good one right off the bat? (You Amiga owners must be drooling to get this one) -- ------------------------------------------------------------------------------- Erik James Freed Aurora Systems San Francisco, CA {dual,ptsfa}!aum!freed