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Update Rubin 10-11 documentation to match code.

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ITS configuration has the Rubin 10-11 in the 3,,0-3,,777777 range.
The documentation says it's one moby lower.

Two more PDP-11s were attached at some point.
This commit is contained in:
Lars Brinkhoff
2018-07-17 13:49:07 +02:00
parent 49fba5a2f9
commit 8ac9b564e7
1 changed files with 8 additions and 3 deletions
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doc/sysdoc/_calls.127
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@@ -4255,13 +4255,13 @@ T11MP: PDP-10 to PDP-11 map
PDP-10 pages are mapped into segments of variable size in the
PDP-11's memory. The PDP-10 to PDP-11 page map is also directly
addressable in memory (it currently lives in absolute locations
2,,776000 - 2,,776377). There are 256. such entries, one for each
page in the range 2,,0 - 2,,777777, which are the addresses fielded
3,,776000 - 3,,776377). There are 256. such entries, one for each
page in the range 3,,0 - 3,,777777, which are the addresses fielded
by the PDP-10 to PDP-11 interface. ITS allocates these pages
and their corresponding map entries randomly as needed.
When the PDP-10 attempts to access a physical address in the range
2,,0 to 2,,777777, the interface uses the 776000 bits to index
3,,0 to 3,,777777, the interface uses the 776000 bits to index
the map words. If the appropriate map word does not have its
valid bit set, the memory is considered non-existent. The same
is true if the reference would violate the protection bounds.
@@ -4302,6 +4302,11 @@ T11MP: PDP-10 to PDP-11 map
4 The Logo pdp11/45.
5 The Micro-Automation pdp11/45.
The following PDP11s were added at an unknown date.
6 The Vision 11/40.
7 The pdp11 that runs the AI Chaosnet interface.
Errors:
1 NO SUCH DEVICE