Thank you Charles. Is it a known issue only for control flow logic? When I use MOV command to save a negative number (MOV r1, -1), then save r1 into shared RAM, then into a txt file, I do see -1 is saved into the txt file correctly.
On Tuesday, October 31, 2017 at 9:13:31 AM UTC-4, Charles Steinkuehler wrote: > > On 10/30/2017 4:53 PM, zlw...@gmail.com <javascript:> wrote: > > I am trying to use QBLT to compare two numbers and found out when one > > number is negative, the QBLT logic does not seem make right comparison. > In > > the following code, before QBLT, r3 =1-4 = -3, and r2 = 10, so r3 < r2, > > then the code should execute MOV r3, -1. However, when I run this macro, > r3 > > is set to 1. > > Anyone notices this issue? Any idea how to fix it? > > This is a known issue, the PRU supports *ONLY* unsigned integers. > > Write your code properly for unsigned data types and you will not have > any problems. > > -- > Charles Steinkuehler > cha...@steinkuehler.net <javascript:> > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/859b4ea7-a3a6-430d-a715-b5d24ccc6a09%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
