From owner-freebsd-hackers Thu Jun 15 21:54:45 1995 Return-Path: hackers-owner Received: (from majordom@localhost) by freefall.cdrom.com (8.6.10/8.6.6) id VAA24057 for hackers-outgoing; Thu, 15 Jun 1995 21:54:45 -0700 Received: from irz301.inf.tu-dresden.de (irz301.inf.tu-dresden.de [141.76.1.11]) by freefall.cdrom.com (8.6.10/8.6.6) with SMTP id VAA24051 for ; Thu, 15 Jun 1995 21:54:43 -0700 Received: from sax.sax.de by irz301.inf.tu-dresden.de with SMTP (5.67b+/DEC-Ultrix/4.3) id AA06668; Fri, 16 Jun 1995 06:54:40 +0200 Received: by sax.sax.de (8.6.12/8.6.12-s1) with UUCP id GAA22379; Fri, 16 Jun 1995 06:54:40 +0200 Received: (from j@localhost) by uriah.heep.sax.de (8.6.11/8.6.9) id AAA02284; Fri, 16 Jun 1995 00:06:20 +0200 From: J Wunsch Message-Id: <199506152206.AAA02284@uriah.heep.sax.de> Subject: Re: GPL_MATH_EMULATE To: echet@coil.com (Eric Chet) Date: Fri, 16 Jun 1995 00:06:20 +0200 (MET DST) Cc: freebsd-hackers@freebsd.org (FreeBSD hackers) In-Reply-To: <199506151847.OAA12613@bronze.coil.com> from "Eric Chet" at Jun 15, 95 02:47:49 pm Reply-To: joerg_wunsch@uriah.heep.sax.de (Joerg Wunsch) X-Phone: +49-351-2012 669 X-Mailer: ELM [version 2.4 PL23] Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit Content-Length: 1145 Sender: hackers-owner@freebsd.org Precedence: bulk As Eric Chet wrote: > > I selected "options GPL_MATH_EMULATE" for use with ghostscript. My question > is will all floating point math be emulated? Will the 486's FPU be used now? > I used the option "cpu I486_CPU" also. As long as you don't disable device ``npx0'', the FPU will get precedence over an emulator. > Should I recompile everything for a I486? Will it make a difference? Leaving all math emulators out will make the kernel smaller, and since the kernel permanently resides in RAM, will give you more RAM. > What does this do for xwindows? > ---------------------- > device vt0 at isa? port "IO_KDB" tty irq 1 vector pcrint > option "PCVT_FREEBSD=210" > option XSERVER > ---------------------- It's an alternate console driver, you'd have to disable the `sc0' driver. Only for Xwindows, you certainly don't want to use it. It's a bit bigger than syscons, but gives you a very reasonable DEC VT220 emulation. If you seldom use text mode, this won't be an improvement for you. -- cheers, J"org joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ Never trust an operating system you don't have sources for. ;-)