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26-Feb-87 13:46:28-MST,1632;000000000000
Mail-From: BEEBE created at 26-Feb-87 13:46:24
Date: Thu 26 Feb 87 13:46:24-MST
From: "Nelson H.F. Beebe" <Beebe@UTAH-SCIENCE.ARPA>
Subject: DVI family update #5
To: $90%dhdurz1.bitnet@WISCVM.WISC.EDU, austins%ucbcmsa.edu@UTAH-CS.ARPA,
    cel@CITHEX.CALTECH.EDU, crawford-j%ohio-state.arpa@UTAH-CS.ARPA,
    crm8701%tamvenus.bitnet@WISCVM.WISC.EDU,
    david%ci-dandelion.uucp@EDDIE.MIT.EDU,
    gaspard%hroeur5.bitnet@WISCVM.WISC.EDU,
    james%vaxe.coe.northeastern.edu@UTAH-CS.ARPA,
    lamy%ai.toronto.edu@RELAY.CS.NET, mpc91b%dgogwd01.bitnet@WISCVM.WISC.EDU,
    rjones%uwovax.bitnet@WISCVM.WISC.EDU, rs%gnome.cs.cmu.edu@UTAH-CS.ARPA,
    stone%ruthep.rutgers.edu@RUTGERS.RUTGERS.EDU,
    system%uvphys.bitnet@WISCVM.WISC.EDU, thobe@EE.UCLA.EDU,
    x854%ddagsi3.bitnet@WISCVM.WISC.EDU, zeffi%finabo.bitnet@WISCVM.WISC.EDU
cc: BEEBE@UTAH-SCIENCE.ARPA
X-US-Mail: "Center for Scientific Computation, South Physics, University of Utah, Salt Lake City, UT 84112"
X-Telephone: (801) 581-5254
Message-ID: <12282197588.22.BEEBE@UTAH-SCIENCE.ARPA>

In dispchar.h, change the line

		      rightones[HOST_WORD_SIZE - 1 - bits_to_next] &
to
		      rightones[bits_to_next] &

This code is not active for non 32-bit machines, or the  IBM
PC, and the  local 32-bit Unix  machines running the  driver
family have been  using only the  laser printer members,  so
the bug was not caught until we actually tried DVIPRX output
under VAX VMS.   The effect  it has is  that large  vertical
white streaks  appear in  the output  bitmap; dispchar()  is
used by all the low-resolution dot matrix printers.
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