> "The bulk of the software was on read-only rope memory and thus couldn't be changed in operation, but some key parts of the software were stored in standard r

> "The bulk of the software was on read-only rope memory and thus couldn't be changed in operation, but some key parts of the software were stored in standard read-write magnetic-core memory and could be overwritten by the astronauts using the DSKY interface, as was done on Apollo 14." Ah, yes right, there was something. I've been fascinated by the AGC by some time¹, yet I completely forget about that. Time to hunt down the mission protocols to understand what this patch did. ------ 1: … and the LVDC, which is the computer that controlled the Saturn-V. Because it was based on the computers used in ICBMs still a lot of information about that is classified. A lot of people conjectured that it was a IBM System 360 reshaped, but when actual LVDS board got torn down by electronics nerds over the past couple of years some significant differences to the 360 were discovered.