This is just curious to me, not a problem. Especially seeing as how I'm stuck on a z9BC. But on page 5-98 of DZ9ZR010.PDF (version ?? of the PoPS), it says that certain general purpose instructions are restricted in transaction mode. Most I can get an understand of, like PLO. But I am really curious as to why the "store characters under mask high" is restricted when, and only when, the M3 field is B'000' and the register value in 6 or 7 (B'0110' or B'0111'). Why specifically registers 6 & 7???? "Inquiring minds what to know!"
-- "Irrigation of the land with seawater desalinated by fusion power is ancient. It's called 'rain'." -- Michael McClary, in alt.fusion Maranatha! <>< John McKown
