386/387 asm question

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#1316

From: Ray Berry
Date: Tue, 20 Feb 1990 18:56

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	I am interested in learning whether the 387 supports the extended
addressing features of the 386.  For instance, the sample instruction
	
	fld	dword ptr [esi][eax*4]

	assembles fine both in MASM and TASM.  But when executed, (yes, 
it seems to execute ok) the 387 does not load the correct data.  (pc, 
real mode).  If I 'mov' the data to a 386 register it shows up fine, so 
I know the address is properly formed.  And if I convert the address to 
the conventional [si][bx] form, all is fine also. Incidentally, I'm
using Borland TD to make these observations.  Does anyone know about 
this?  Thanks in advance for any help.
-- 
Ray Berry  kb7ht  uucp: ...ole!ray CIS: 73407,3152 /* "inquire within" */
Seattle Silicon Corp. 3075 112th Ave NE. Bellevue WA 98004 (206) 828-4422

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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!rice!uw-beaver!sumax!ole!ray
From: ray@ole.UUCP (Ray Berry)
Newsgroups: comp.sys.ibm.pc.programmer
Subject: 386/387 asm question
Message-ID: <1522@ole.UUCP>
Date: 20 Feb 90 18:56:03 GMT
Distribution: na
Organization: Seattle Silicon Corp., Bellevue, WA.
Lines: 16