Catalog of programs revealed the emulator you referred to: 1620-13.0.016 (also 160-13.0.018) 141 Data Processing System - An educational Computer for Instruction in Basic Programming.
http://www.bitsavers.org/pdf/ibm/1620/GC20-1603-10_1620_Catalog_of_Programs_Jan71.pdf JRJ On 7/15/2015 1:17 PM, Fred Cisin wrote: > On Wed, 15 Jul 2015, Chuck Guzis wrote: >> FWIW, Dijkstra disliked the 1620 immensely. I don't recall his >> opinion of the 1401. > > There was a somewhat minimal 1401 emulator that could be run on the 1620 > > > >