BTS ( Bit Test and Set ) operates the same, but also sets the bit in the register, while BTR ( Bit Test and Reset ) resets it, and BTC ( Bit Test and Complement ) flips it.
12.
The non-privileged instruction set of the System 4-50 and 4-70 included the integer, floating-point, character, and decimal instructions in short, the full non-privileged instruction set of the IBM System 360, except for Test and Set ( TS ).
13.
So they test and set a period that is the longest they can get away with that still is a nice round number ( IE a 6mo . 1-year, 3-year, ect . ) but still under ( potentially just under ) the expected failure time . talk ) 21 : 11, 4 April 2011 ( UTC)
