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Old 29 October 2018, 16:23   #592
grond
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Join Date: Jun 2015
Location: Germany
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Quote:
Originally Posted by Megol View Post
DIVS? ARM added integer division after 2010 IIRC, don't think microcode is involved.
Yes, your are right.


Quote:
SPARC used the FPU IIRC which wasn't too unusual at the time or even now (for integer division).
No, here you are wrong. I just looked it up. SPARC had the "MULScc" instructions which -- contrary to what its name seems to imply -- does not do a whole multiplication but just a single step in (IIRC) a shift-add multiplication. The mnemonic "MULS" stands for "MULtiply-Step". This instruction has been superseded by SMUL and UMUL instructions, of course.

https://docs.oracle.com/cd/E19120-01...172/index.html
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