From owner-freebsd-hackers Sun Jan 7 14:25:46 1996 Return-Path: owner-hackers Received: (from root@localhost) by freefall.freebsd.org (8.7.3/8.7.3) id OAA21984 for hackers-outgoing; Sun, 7 Jan 1996 14:25:46 -0800 (PST) Received: from relay-4.mail.demon.net (relay-4.mail.demon.net [158.152.1.64]) by freefall.freebsd.org (8.7.3/8.7.3) with SMTP id OAA21861 for ; Sun, 7 Jan 1996 14:24:54 -0800 (PST) Received: from post.demon.co.uk ([158.152.1.72]) by relay-4.mail.demon.net id aa21327; 7 Jan 96 22:11 GMT Received: from bagpuss.demon.co.uk ([158.152.9.30]) by relay-3.mail.demon.net id aa29738; 7 Jan 96 22:11 GMT Received: (karl@localhost) by bagpuss.demon.co.uk (3.1/3.1) id WAA18001; Sun, 7 Jan 1996 22:11:46 GMT From: Karl Strickland Message-Id: <199601072211.WAA18001@bagpuss.demon.co.uk> Subject: Changing the 16550 FIFO trigger To: hackers@freebsd.org Date: Sun, 7 Jan 1996 22:11:45 +0000 (GMT) X-Mailer: ELM [version 2.4 PL23] Content-Type: text Sender: owner-hackers@freebsd.org Precedence: bulk I have a 386/16 with 8MB, running FreeBSD-Release-2.1. I need to use an internal modem (with a 16550), running at 28.8. I understand the default sio trigger is FIFO_TRIGGER_14 (ie a 2 byte fifo). Due to the slowness of this machine, I am thinking of decreasing this to FIFO_TRIGGER_8, this giving an 8 byte fifo. Is this a good idea, and whats the best way to make the change? Cheers, Karl ------------------------------------------+----------------------------------- Mailed using ELM on FreeBSD | Karl Strickland PGP 2.3a Public Key Available. | Internet: karl@bagpuss.demon.co.uk |