From owner-freebsd-questions Wed Jan 18 10:28:46 1995 Return-Path: questions-owner Received: (from root@localhost) by freefall.cdrom.com (8.6.9/8.6.6) id KAA10960 for questions-outgoing; Wed, 18 Jan 1995 10:28:46 -0800 Received: from helix.nih.gov (helix.nih.gov [128.231.2.3]) by freefall.cdrom.com (8.6.9/8.6.6) with SMTP id KAA10953 for ; Wed, 18 Jan 1995 10:28:43 -0800 Received: by helix.nih.gov (940715.SGI.52/1.35(m-sg-1.0)) id AA06046; Wed, 18 Jan 95 13:28:31 -0500 Date: Wed, 18 Jan 95 13:28:31 -0500 From: crtb@helix.nih.gov (Chuck Bacon) Message-Id: <9501181828.AA06046@helix.nih.gov> To: freebsd-questions@FreeBSD.org Subject: Re: GUS question and LPT question Sender: questions-owner@FreeBSD.org Precedence: bulk : > IRQs should be used for printing iff they work. : > : > I would like to see the specs for printers that take hours to print a : > line or page. This is called by the printer acknowledging output more : > than a few microseconds or nanoseconds before it is ready. Takes me back.. to CP/M. I think something somewhere is ignoring, or perhaps not seeing, the acknowledgement from the parallel port. The parallel driver would time out, after perhaps 30 seconds, and transmit the next character regardless. At this rate, a typical 3K per page print job would do about a page a day. Chuck Bacon -- crtb@helix.nih.gov