What am I missing? Isn't PLO Function Codes 16-19 (Compare and Swap and Double Store) updating three locations?
Direct out of the "Principle of Operations": The first-operand comparison value is compared to the second operand. When the first-operand comparison value is equal to the second operand, the first-operand replacement value is stored at the second-operand location, the third operand is stored at the fourth-operand location, the fifth operand is stored at the sixth-operand location, and condition code 0 is set. I see three stores in the above text. I've been using this successfully for a while updating two different locations, but now I want to update three and do not see a need to "Compare and Swap and Triple Store". ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
