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Awesome, I was really hoping that kens would take a look at the 432 chipset given his experience reversing the 8086 and the fact that the 432 is on a similar In

Awesome, I was really hoping that kens would take a look at the 432 chipset given his experience reversing the 8086 and the fact that the 432 is on a similar Intel HMOS process. Particularly because the 432 has a lot of commentary on why it failed, but unfortunately lacks a lot of hard details on what all it actually was. If people want to read more, some of the best docs I've found are the academic literature on the chips. Instruction Decoder: https://doi.org/10.1109/JSSC.1981.1051633 https://doi.org/10.1109/JSSC.1981.1051633 Execution Unit: https://doi.org/10.1109/JSSC.1981.1051631 https://doi.org/10.1109/JSSC.1981.1051631 Interface Processor: https://doi.org/10.1109/JSSC.1981.1051632 https://doi.org/10.1109/JSSC.1981.1051632

kens 4y ago
Yes, those papers were very informative. Also the iAPX 432 patents have a lot of detail: https://patents.google.com/patent/US4325120A https://patents.google.com/patent/US4325120A https://patents.google.com/patent/US4367524 https://patents.google.com/patent/US4367524 https://patents.google.com/patent/US4415969 https://patents.google.com/patent/US4415969
Findecanor 4y ago
The book "Capability-Based Computer Systems" by Henry M. Levy has 28 pages on how to program the iAPX432. Quite a lot to digest. <https://homes.cs.washington.edu/~levy/capabook/Chapter9.pdf https://homes.cs.washington.edu/~levy/capabook/Chapter9.pdf>