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I was once shown a dos-based CPU simulator back in the mid/late 90s. From memory it showed instruction decode, execution, cache and memory. Unfortunately I've
by paranoidrobot 2y ago
I was once shown a dos-based CPU simulator back in the mid/late 90s.
From memory it showed instruction decode, execution, cache and memory.
Unfortunately I've never been able to find it, because all the google results are about running DOS games and/or DOSBox.
- sitkack 2y agoIt is probably on one of the SIMTEL shovelware cdroms. https://archive.org/details/SIMTEL_0692 https://archive.org/details/SIMTEL_0692 A search engine won't help you, but a local llm might.
- paranoidrobot 2y agoGood suggestion, thanks. ChatGPT came up with what I thought was a halucination: "CPU Sim". After some searching, I found a Facebook post[1] with a photo of it running. That looks mostly like what I recall. The screenshot is from a 1987 version. I can also find references to a Windows version, but no copies of either. I thought there were more features to it, but perhaps I'm misremembering or I've also thinking of Mikrosim that Tomte mentions in the sibling comment. [1] https://www.facebook.com/RMUserGroup/posts/pfbid0uVrCYMsWmJaCdEU9fuTyCdrCDCibH1GGyDnCH6fwDQ7aDjNT7bU3g8VWNt35qb1l https://www.facebook.com/RMUserGroup/posts/pfbid0uVrCYMsWmJa...
- Tomte 2y agoMikrosim maybe? The name is because it simulates microcode. That was a huge a-ha moment for me in school. https://en.wikipedia.org/wiki/MikroSim https://en.wikipedia.org/wiki/MikroSim http://www.mikrocodesimulator.de/index_eng.php http://www.mikrocodesimulator.de/index_eng.php
- paranoidrobot 2y agoGood find, thanks. That one is looking more familiar the more screenshots I see of it, but I think I might be mixing memories of two programs - this, and "CPU Sim" which I mention in a reply to the sibling comment.