On Tue, Jan 2, 2018 at 4:28 AM, Jon Elson via cctalk <[email protected]> wrote: > wires by 1965 or earlier. it does appear to have 40 bit planes, however,
Elliott 503 and 803 were 40-bit machines, 39 data bits + one parity bit and from the early 1960s. https://en.wikipedia.org/wiki/Elliott_803 We have the backing-core stack for the 503 and Bill's stack is quite different. We also have the main core stack for the 503 but not seen directly as the example we have is still in its cooling shroud. I can't find pictures of the 803 core stack but here are pictures of the 503 core stacks: https://photos.app.goo.gl/hNA0urEpkPkOhEm22 503 Backing magnetic core store: https://goo.gl/photos/R2xT85NN1c9DmBZk7
