Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!mit-eddie!uw-beaver!sumax!polari!thebes!ole!ray
From: ray@ole.UUCP (Ray Berry)
Newsgroups: comp.sys.intel
Subject: Looping with 386 ecx register
Message-ID: <877@ole.UUCP>
Date: 30 Jun 89 18:28:48 GMT
Distribution: na
Organization: Seattle Silicon Corp., Bellevue, WA.
Lines: 9


	All of the (3rd party) 386-asm documentation I've looked at states
that ECX is used when looping on the 386.  I.e., counts greater than 2^16
are allowed.  When I execute this instruction (on a pc), the top half of
ecx is ignored.  Is this a function of the cpu operating mode?  Can some-
one shed a little light on this?  Thanks in advance...
-- 
Ray Berry  kb7ht uucp: ...{sumax|thebes|quick}!ole!ray     CIS 73407,3152
Seattle Silicon Corp. 3075 112th Ave NE. Bellevue WA 98004 (206) 828 4422