Name scheme:
<OS>_<boot device code>_<pdp11-version>
-

rt11v5.5sj_dl1_34.sh
rt11v5.5fb_dl0_34.sh
rt11v5.5_dl_34.cmd


xxdp2.5_dl1.sh  .cmd


rsx11m4.1_dl0_34.sh  .cmd

rsx11m4.1_34.rl02
rsx11m4.1_hlpdcl_34.rl02
rsx11m4.1_excprv_34.rl02



miniunix_dk0_05.sh

unixv6_dk0_34