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Date:      Fri, 16 Jun 1995 00:06:20 +0200 (MET DST)
From:      J Wunsch <j@uriah.heep.sax.de>
To:        echet@coil.com (Eric Chet)
Cc:        freebsd-hackers@freebsd.org (FreeBSD hackers)
Subject:   Re: GPL_MATH_EMULATE
Message-ID:  <199506152206.AAA02284@uriah.heep.sax.de>
In-Reply-To: <199506151847.OAA12613@bronze.coil.com> from "Eric Chet" at Jun 15, 95 02:47:49 pm

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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. ;-)



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