1988-09-13 /bb-y390o-bm_tops20_v41_atpch_20/01/autopatch/all.a20 1988-10-19 /bb-bt99n-bb/01/all.a20 1988-11-03 /bb-l014t-bm_tops20_v7_0_atpch20/01/autopatch/all.a20