booting archived Sys III and Ultrix 3.x images

Has anyone successfully booted either the System III (...Distributions/usdl/SysIII/) or Ultrix (...Distritutions/dec/Ultrix*) tape images? I don't have a real PDP-11 any more, however both the Begemot P11 and the Supnik emulators produce the following on a generated boot disk: #0=unixhptm ka6 = 1535 aps = 141774 pc = 1476 ps = 30010 trap type 0 ka6 = 1535 aps = 141666 pc = 113444 ps = 30300 trap type 0 panic: trap The Ultrix images both fail to actually boot from tape, as they quit after reading the first boot block. Thus I am unable get as far as being able to generate a disk image for booting. I'm somewhat confident that my tape image booting and system generation procedures used with the Supnik emulator are working properly, since I successfully generate disk systems from both the V7 (Bostic) and the 2.11BSD boot-tape images. Any info and interest of others gleefully appreciated :) -skots -- Scott G. Akmentins-Taylor InterNet: staylor(a)mrynet.com MRY Systems staylor(a)mrynet.lv (Skots Gregorijs Akmentins-Teilors -- just call me "Skots") ----- Labak miris neka sarkans -----