Patch to asych driver IBM/4.3

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1 total messages Started by brunner Fri, 17 Nov 1989 00:26

#569

Author: brunner
Date: Fri, 17 Nov 1989 00:26

34 lines
1278 bytes

Subject: Patch for multiport asychronous driver
Index: /sys/caio/asy.c, IBM/4.3

Description:
	The watchdog close timer expires too early. In the case of
	the IBM Proprinter at 9600 bps this causes the last few
	lines of output to be lost.
Fix:
	Apply the following patch:

*** asy.c	Tue Nov 14 15:11:57 1989
--- asy.c.fix	Tue Nov 14 15:20:27 1989
***************
*** 520,526 ****
  asyouttime(tp)
  register struct tty *tp;
  {
! 	return (hz + 3 * hz * tp->t_outq.c_cc / (2 * asyoutputrate[tp->t_ospeed]));
  }
  
  /*
--- 520,527 ----
  asyouttime(tp)
  register struct tty *tp;
  {
! 	return (18 * hz * (1 + tp->t_outq.c_cc / asyoutputrate[tp->t_ospeed]));
! 
  }
  
  /*

Eric Brunner, Consultant, IBM AWD Palo Alto	(415) 855-4486
inet: brunner@monet.berkeley.edu
uucp: uunet!ibmsupt!brunner

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