I have been given a PDP-11/44 and I was running through all sorts of diagnostics to check out the machine. It seems to work fine except for the trap test KKABD1 which fails at 23252. It passes an earlier version of the same trap test. The listing (thank you Jörg) is at: ftp://u58104846-pub:open4you@ ftp.j-hoppe.de/fichescanner/bw/gh/AH-F623D-MC__KD11-Z__11-44_TRAPS__CKKABD0__(C)79-82.pdf
It tells me that my M7098 board is missing ECO #7. Anyone knows of a list of ECOs for the PDP-11/44. I think I have searched everywhere I can think of but haven't found it.