Hi,
I’ve got some questions which can (most likely) only be answered by someone of Nvidia. All are more or less assembler-related, so please don’t blame me for asking stuff that is not supported so far…
(1) add-with-carry
Is there an add-with-carry instruction on the 80xx platform?
Some thoughts about adc:
-
I guess there would be mnemonics to set and get the carry as well?!
-
Which instructions change the carry? What happens if the threat is stopped before we save the carry? Or is the carry a (thread-owned) register? Just curious…
(2) mulhi, mul, etc
What happens when we call mul und mulhi? Does it compute the multiplication twice or is there a way to tell the compiler to compute once and fill two output registers?
(3) PTX assembler
When can we expect a PTX manual and use inline assembler? AFAIK the FAQ says something like “soon”.
Thanks,
Robert