AMD 3200 Revision History - Page 56
Operation, Receive, Incorrect, After, Floating, point, Exception
UPC - 730143241144
View all AMD 3200 manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 56 highlights
Revision Guide for AMD Family 15h Models 00h-0Fh Processors 48063 Rev. 3.18 October 2012 668 Load Operation May Receive Incorrect Data After Floatingpoint Exception Description The processor may incorrectly load data from a prior store-to-load forwarding operation after an unmasked x87 floating-point exception (#MF) if the exception occurs while CR0 Numeric Error = 0b (CR0.NE, bit 5) and a prior exception is indicated (x87 Status Word Register Exception Status, FSW.ES bit 7, is already 1b). Potential Effect on System None expected. Operating systems typically set CR0.NE = 1b or floating-point exception handlers normally clear the exception status (FSW.ES). If these conditions are not met, a load operation may receive data that was not updated by the most current write from a processor core. AMD has not observed this erratum with any commercially available software. Suggested Workaround None. Fix Planned Yes 56 Product Errata