Re: Thoughts on IBM 360

On Thu, 3 Apr 2025 12:29:36 +0100, The Natural Philosopher wrote:

"The 1967 IBM System/360 Model 91 could execute up to 16.6 million
instructions per second. The larger 360 models could have up to 8 MB of
main memory though that much memory was unusual; a large installation
might have as little as 256 KB of main storage, but 512 KB, 768 KB or
1024 KB was more common. Up to 8 megabytes of slower (8 microsecond)
Large Capacity Storage (LCS) was also available for some models. "

My introduction to programming was on a System/360 30.

https://en.wikipedia.org/wiki/IBM_System/360_Model_30

I can't remember if it had 32 or 64k but for operations like a FFT you
wrote partial products to the tape drive, rewound, and took another pass.
I was not impressed.