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Anyone familiar with Wang OIS internals?

Similar to my 16x8 bit ram on the top 4 bits of a Z80, allowed 1MB as a set of 256 x 4K 'pages' any of which could be mapped anywhere in the Z80 64k space.
Quite good for running MP/M.

Any reply from Jim Donohue? - I looked on Linkedin, there's 100s of them...
 
Nope, nothing yet. The 1K bank size worked well for us, as almost everything was written in our own compiled multi-user BASIC. Since it was a p-code affair, we could swap in pages as needed. We were still using 16Kbit DRAM at the time we brought the bankswitching model out in 1979, so there was a practical limit to what could be put on a Multibus-sized PCB.
Anyone can register with LinkedIn, BTW.
 
ois100 said:
Interesting. Just looked at that notebook disc. I see that the notebook files were in the ECCBAM (Extended ? ? Binary Access Method). That was widely used on the Alliance 250 product, a complete streamlining of the OIS software (using the same disc format) but with the ability to automate (Glossary) almost all applications. One of these was NOTEBOOK and it was great. From the Catalog alone it looks like it was re-compiled to run on with OIS-100 level slave (workstation/printer) software. Weird to suddenly see Wang software after such a long gap of seeing almost nothing.
Click to expand...
This is the (long expired) patent on CBAM, which was the B-tree data structure. The "sparse array" part was added later. It was the foundation of the Alliance system and sat on top of the OS-6 distributed file system. https://patents.justia.com/patent/4606002 [Amnon hired me in 1981 to work in the database group at Wang.]
 
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