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doc/Paging.txt: add note about documentation issues wrt Jupiter paging

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Mikael Pettersson 2015-09-08 22:24:47 +02:00
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doc/Paging.txt
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@ -186,6 +186,9 @@ Based on TOPS-20 Paging on the KL10, with the following extensions:
- the Process Table contains an 8-entry Super Section Table (SST) indexed by
the high 3 address bits
- physical page numbers are 18 bits, allowing up to 128MW of physical memory
(some instructions specify only 16 bits for PPNs or 25 bits for PAs, e.g.
WRCTX and WRSPB, but this looks like a documentation oversight; the KD10
specification appears to correct some of those)
There are five kinds of entries in super section tables:
- invalid