Yep -- same result in Linux.  Because -- as I noted -- my K/Bs generate
note-on-0s, I generated a trivial midifile with my converter in Haiku,
and used it in Linux.

Here's the core of my test csd:

  alwayson "loop"

  instr loop
	kstatus, kchan, kdata1, kdata2 midiin
	printf "status %d chan %d data1 %d data2 %d\n", kstatus, kstatus, kchan, kdata1, kdata2
	endin

and sending it the 3-note midi I get:

  status 144 chan 1 data1 60 data2 81
    rtevent:	   T  0.179 TT  0.179 M:  0.00000  0.00000
  status 128 chan 1 data1 60 data2 64
    rtevent:	   T  0.319 TT  0.319 M:  0.00000  0.00000
  status 144 chan 1 data1 62 data2 86
    rtevent:	   T  0.473 TT  0.473 M:  0.00000  0.00000
  status 128 chan 1 data1 62 data2 64
    rtevent:	   T  0.629 TT  0.629 M:  0.00000  0.00000
  status 144 chan 1 data1 64 data2 91
    rtevent:	   T  0.919 TT  0.919 M:  0.00000  0.00000
  status 128 chan 1 data1 64 data2 64
  end of midi track in 'OnOff.mid'

	-- Pete --

Csound mailing list
Csound@listserv.heanet.ie
https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND
Send bugs reports to
        https://github.com/csound/csound/issues
Discussions of bugs and features can be posted here