DOS ain't dead

x86 flags after bit shifts with count = 0 (Developers)

posted by mht , Wroclaw, Poland, 28.11.2008, 07:17

> If you could write a small test tool in the meantime ...

Thanks for testing!

The test revealed that 80C88 keeps OF, SF, ZF, AF, PF and CF unchanged when the shift count is zero, exactly as documented for IA-32 processors.

Complete thread:

• x86 flags after bit shifts with count = 0 - mht, 22.11.2008, 15:15 (Developers)
  • x86 flags after bit shifts with count = 0 - Rugxulo, 25.11.2008, 06:47
    • x86 flags after bit shifts with count = 0 - ecm, 25.11.2008, 13:31
      • x86 flags after bit shifts with count = 0 - mht, 25.11.2008, 22:11
    • x86 flags after bit shifts with count = 0 - rr, 25.11.2008, 21:21
      • x86 flags after bit shifts with count = 0 - mht, 25.11.2008, 21:59
        • x86 flags after bit shifts with count = 0 - rr, 25.11.2008, 22:10
          • x86 flags after bit shifts with count = 0 - mht, 28.11.2008, 07:17
            • x86 flags after bit shifts with count = 0 - mht, 05.12.2008, 08:55
      • x86 flags after bit shifts with count = 0 - RayeR, 25.11.2008, 22:22
        • x86 flags after bit shifts with count = 0 - rr, 26.11.2008, 20:57
          • x86 flags after bit shifts with count = 0 - Rugxulo, 28.11.2008, 00:09
            • x86 flags after bit shifts with count = 0 - marcov, 28.11.2008, 15:41
            • x86 flags after bit shifts with count = 0 - rr, 30.11.2008, 18:33
              • x86 flags after bit shifts with count = 0 - Rugxulo, 30.11.2008, 20:53
                • portable handhelds' battery life - Rugxulo, 30.11.2008, 21:06
                • x86 flags after bit shifts with count = 0 - rr, 30.11.2008, 22:38
              • x86 flags after bit shifts with count = 0 - RayeR, 30.11.2008, 22:41