12 Feb
2000
12 Feb
'00
12:20 p.m.
Also, I looked at the SYSMAC.SML file and note that
there is no .DrVTB
macro present (also no .DrSet macro although the information is hard
coded into the various device drivers, and obviously the SET commands do
work). Does this mean, in your opinion (maybe you or someone else
remembers that far back - 22 years ago) that an LS.MAC device driver
can't operate in V3.0B since RT-11 is not yet smart enough to use dual
CSR/VECTOR hardware that requires two .DrAst entries? I notice that V4.0
of RT-11 finally has the LS.SYS device driver, but there is none present
in V3.0B of RT-11, only the LP.SYS device driver.
The .DRxxx set of macros were not added to RT until about the V4.0
timeframe. If you were to take an LS.MAC from a later release and
modify it in such a way that it did not use .DRxxx macros, and used
what data structures were available in V3B, it certainly would work.
Megan Gentry
Former RT-11 Developer
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