<div dir="ltr"><div>In: /usr/src/uts/vax/cf</div><div><br></div><div>This is what is in conf.c:</div><div>struct cdevsw cdevsw[] = {<br>/* 0*/ conopen, conclose, conread, conwrite, conioctl, 0,<br>/* 1*/ dzopen, dzclose, dzread, dzwrite, dzioctl, dz_tty,<br>/* 2*/ syopen, nulldev, syread, sywrite, syioctl, 0,<br>/* 3*/ nulldev, nulldev, mmread, mmwrite, nodev, 0,<br>/* 4*/ gdopen, gdclose, gdread, gdwrite, nodev, 0,<br>/* 5*/ htopen, htclose, htread, htwrite, nodev, 0,<br>/* 6*/ nodev, nodev, nodev, nodev, nodev, 0,<br>/* 7*/ nodev, nodev, nodev, nodev, nodev, 0,<br>/* 8*/ erropen, errclose, errread, nodev, nodev, 0,<br>};</div><div><br></div><div>In "master" sample entries are:</div><div>ts11 4 36 115 ts 4 1 5 1 5<br>tu78 1 36 515 hu 0 1 5 4 5<br>rm05 1 76 515 hm 0 0 4 8 5<br>nsc 4 77 5 nsc 8 0 10 1 5 ndb ct<br><b>lp11 4 73 5 lp 4 0 6 1 4</b><br>dn11 4 32 6 dn 8 0 7 4 5<br>vp 4 33 5 vp 16 0 14 1 5 vp<br>dmc11 8 37 6 dmc 8 0 19 1 5</div><div><br></div><div>Those numbers do not mean much to me.</div><div><br></div><div>Does this help in determining major/minor number for lp?</div><div><br></div><div>Thanks</div><div>Ken</div><div><br></div><div><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Mar 15, 2023 at 4:53 AM Dave Horsfall <<a href="mailto:dave@horsfall.org">dave@horsfall.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">On Wed, 15 Mar 2023, <a href="mailto:arnold@skeeve.com" target="_blank">arnold@skeeve.com</a> wrote:<br>
<br>
[...]<br>
<br>
> That is, 'c' for character device, major device is the index in cdevsw, <br>
> and minor device indicates which physical one to use. Since you only <br>
> have one, it should be 0.<br>
<br>
There's also the possibility of using the upper-order bits to pass flags, <br>
although there's not a lot that you can do with a printer (control of page <br>
throw, etc).<br>
<br>
-- Dave<br>
</blockquote></div><br clear="all"><br><span class="gmail_signature_prefix">-- </span><br><div dir="ltr" class="gmail_signature"><div dir="ltr"><div>End of line</div><div>JOB TERMINATED</div><div><br></div><div><br></div></div></div>