For DN60 variants software look in the trailing edge Pdp10 archives for tape BB-J845A-SM; it is called TOPS-20 IBM 2780/3780/HASP E/T for the DECSYSTEM-2020. Contrary to what I thought, the hardware platform and software is similar to Anf10 and should run on a simh pdp11 properly throttled but with added interfaces. In this case It is specified for Tops20 V4 on 2020. There also exists tapes for older Pdp10 systems with dte type interfaces and Tops10. As we have Tops20 V4.1 there is a base to work upon. Reindert -----Original Message----- From: owner-hecnet at Update.UU.SE [mailto:owner-hecnet at Update.UU.SE] On Behalf Of Robert Armstrong Sent: Friday, 19 November, 2021 17:33 To: hecnet at Update.UU.SE Subject: RE: [HECnet] ANF10 network --> DN200 (RJE, Decnet) --> should be Ddcmp --Re3 do TOPS-10 had an IBM HASP communication FE product; I think it was called a DN60. I used it long ago - you could submit card decks to JES2 under OS/VS2 from files on the -10 and get the resulting print out back as another disk file on the -10. Beats a keypunch and a line printer by miles... It'd be kind of neat, although a total waste of time, to hook up a simh TOPS10 to a Hercules and try to get that working. Bob