As I attempted to make clear in my earlier post, this old-hardware argument is specious. If you want to support old machines, write a macro called TRTE for them, but use TRTE in your code. It reduces clutter, increases readability, improves performance where the instruction is installed, etc., etc.
Note also that the '7th edition' of the PrOp was published in 2008 February, a bit more than five years ago and longer than the depreciation interval for a purchased mainframe. I have made my views and the reasons for them clear. Others are of course free to do as they think best. How not? John Gilmore, Ashland, MA 01721 - USA
