14 Nov
1999
14 Nov
'99
11:34 a.m.
Jerome Fine replies:
In addition, some of the code in RT-11 in the monitor
and elsewhere
rejects a date value with a year value of zero - meaning that 1972 is
considered invalid by that code.
This was fixed in RT-11 5.7, it now consistently handles 1972 through
2099, inclusive.
the DATE/TIME hardware clock on the third party board.
Any idea
how the 11/93 does the 1999 transition with the now Y2K compliant
firmware update?
Look in the NL.MAC source code - the SETUP.SAV window range was
chosen identically:
.sbttl . Convert clock date to RT-11 format.
; Convert the BCD date read from the clock to the standard RT-11 format:
;
; RT-11 extended date word (RT-11 V5.5ff)
;
; 15 14 13 12 11 10 9 8 | 7 6 5 4 3 2 1 0
; +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
; |yr xtn | month | day | year-1972 |
; +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
; 2 bits 4 bits 5 bits 5 bits
;
;
; To support the year extension, clock years of 72..99 can be considered to
; be in the 1900s (since the RT-11 base year of 1972) and years of 00..71 can
; be considered to be in the 2000s.
--
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