The IBM 16201 was a scientific computer from IBM, maybe known in the public for its use during the Gemini program. I haven't found much documentation how to actually use it, though there are some interesting application examples on bitsavers. There is at least one comprehensive example on Github.
Most of these directory contain a .simh-file containing the commands for simh-i1620.
There was no readily available documentation2 on how to run the assembler or fortran compiler from the digitized cards from bitsavers. My aim was to run some of the application notes from bitsavers. So let's try to understand the machine from the available documentation. The machine came with a paper tape and a card reader. The card reader interaction seems simpler (put the cards into the reader, press load) and the biggest remaining library also contained shelves with punch cards. From a user perspective, punch cards offer an easier way of patching programs than paper tape anyways. So maybe only the assembler and compilers came on paper tape.
- reading of punch cards is described on page 303
On Bitsavers there is the innocent looking 1620.zip containing most available compilers.
Footnotes
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IBM 1620 Central Processing Unit, Model 1, Systems Reference Library A26-5706-3 ↩
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or rather, I didn't find the files (1620-SP-020 or ) referenced in the programming manuals 45. ↩
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IBM 1620 Input/Output Units, Systems Reference Library A26-5707-0 ↩
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IBM 1620/1710 Symbolic Programming System, Systems Reference Library C26-5600-1 ↩
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IBM 1620 FORTRAN (with FORMAT), Systems Reference Library C26-5619-4 ↩