On Thu, 2025-12-11 at 13:15 -0500, Carl Claunch via cctalk wrote: > I restore IBM 1130 systems and am archiving software to be shared > with > enthusiasts and museums.
As my senior undergraduate project in 1974, I wrote microcode to convince a Varian V73 that it was really an IBM 1130. The university had replaced an aging 1130 with the V73 and then discovered that Varian didn't have a COBOL compiler. Back then, they still wanted to teach it. I have the microcode, but I only got a listing, not the electrons, for the I/O support running in 620f mode. The Computer History Museum has the listing. If anyone is interested I can send the microcode and flow diagrams for it.
