Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.1 (Tek) 9/26/83; site vice.UUCP Path: utzoo!linus!decvax!tektronix!tekchips!vice!angeloh From: angeloh@vice.UUCP (Angelo Hung) Newsgroups: net.micro.pc Subject: 8087 incompatability Message-ID: <53@vice.UUCP> Date: Mon, 12-Nov-84 12:36:42 EST Article-I.D.: vice.53 Posted: Mon Nov 12 12:36:42 1984 Date-Received: Tue, 13-Nov-84 06:49:55 EST Organization: Tektronix, Beaverton OR Lines: 9 Recently, I put a 8087-4 on my XT. I ran through DOS diagnostics without any problem. However, a small benchmark (about 10 lines in basic) showed no sign of improvement in speed. The benchmark primarily consists of square root, exponential, and sin/cos. It took 400 seconds for w/ and w/o 8087. Is it because BASIC interpreter works much slower than those math operations? Or it is because 8087 compatability problem? Or even it is simply a bad chip? Does anyone out there experience same sort of problems? I appreciate it if somebody can give me some suggestions?