From d5cc68a61c3b7544c4241017e1ee866044d7135d Mon Sep 17 00:00:00 2001 From: Mikael Pettersson Date: Tue, 8 Sep 2015 22:24:47 +0200 Subject: [PATCH] doc/Paging.txt: add note about documentation issues wrt Jupiter paging --- doc/Paging.txt | 3 +++ 1 file changed, 3 insertions(+) diff --git a/doc/Paging.txt b/doc/Paging.txt index c6ffca7..8ddc78b 100644 --- a/doc/Paging.txt +++ b/doc/Paging.txt @@ -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