360/50 microcode listing (original) (raw)

jwsmobile jws at jwsss.com
Thu May 7 22:20:10 CDT 2015

On 5/7/2015 6:57 PM, Jon Elson wrote:

Lots of 360's were owned in the later days. All the ones I knew of, with the possible exception of Washington Universities' first 360/50 The UMR 360/50 was one of the first owned 360s. They were given a 360/40 because IBM could not deliver the 50 on schedule. I don't know how that was handled.

The 50 at UMR was also odd because it was a 512K main memory machine, and 1mb of LCS, giving a non power of 2 memory size. Supposedly lead to some bug fixes.

Ran HASP and MVT 21, as well as CPS

thanks JIm

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