John Henry wrote: > I have a rather embarrassing question. > I have been able to do division easily using the divq method in > assembler in previous DSPs, but I can't figure out how to do it in the > 21065L assembler. > So far, I have been able to compute by hand the 1/n for a number, then > do a multiply in 21065l, but now I have numbers that change, meaning > variables instead of constants that I need to do division with. > So, if I have in DM variable a, that I need to divide by DM variable > b, can someone send me either the syntax to do this, or a quick > routine (in assembler, not C, C is easy)? > Sorry, I have figured out a lot, but this one eludes me at the moment. John, you might want to have a look here: http://www.analog.com/processors/resources/technicalLibrary/codeExamples .html then select ADSP-21xxx Applications Handbook File Area where you will find maths, filter, graphics, etc. routines for the SHARC processors. Regards, Andor

On Wed, 30 Mar 2005, John Henry wrote: > I have a rather embarrassing question. > I have been able to do division easily using the divq method in > assembler in previous DSPs, but I can't figure out how to do it in the > 21065L assembler. > So far, I have been able to compute by hand the 1/n for a number, then > do a multiply in 21065l, but now I have numbers that change, meaning > variables instead of constants that I need to do division with. > So, if I have in DM variable a, that I need to divide by DM variable > b, can someone send me either the syntax to do this, or a quick > routine (in assembler, not C, C is easy)? > Sorry, I have figured out a lot, but this one eludes me at the moment. Look in the manual for Fn = RECIPS Fx. They have a routine for doing inversion. It works fine, I use it a lot :-) Patience, persistence, truth, Dr. mike

I have a rather embarrassing question. I have been able to do division easily using the divq method in assembler in previous DSPs, but I can't figure out how to do it in the 21065L assembler. So far, I have been able to compute by hand the 1/n for a number, then do a multiply in 21065l, but now I have numbers that change, meaning variables instead of constants that I need to do division with. So, if I have in DM variable a, that I need to divide by DM variable b, can someone send me either the syntax to do this, or a quick routine (in assembler, not C, C is easy)? Sorry, I have figured out a lot, but this one eludes me at the moment. Thanks, John Henry Sevierville, TN