STX instruction is also not working. BF xx xx So I guess there may be a bunch of op codes that don't work. :-(
Bob Grieb
Fixed in version 16 (30.07.2014)
Here a trace: R 0523 = bf 53615 R 0524 = 10 53655 R 0525 = 16 53685 W 1016 = ab 53725 W 1017 = cd 53745 R 0526 = 8e 53775 R 0527 = 00 53815 R 0528 = 00 53845 R 0529 = be 53895 R 052a = 10 53935 R 052b = 16 53965 R 1016 = ab 53995 R 1017 = cd 54015