1# 2# NOTES -- Lines that can be cut/pasted into kernel and hints configs. 3# 4# This file contains machine dependent kernel configuration notes. For 5# machine independent notes, look in /sys/conf/NOTES. 6# |
7# $FreeBSD: head/sys/pc98/conf/NOTES 131815 2004-07-08 13:47:01Z nyan $ |
8# 9 10# 11# This directive is mandatory; it defines the architecture to be 12# configured for; in this case, the 386 family based PC-98 and 13# compatibles. 14# 15machine pc98 --- 280 unchanged lines hidden (view full) --- 296options KBD_INSTALL_CDEV # install a CDEV entry in /dev 297 298# GDC screen 299device gdc 300hint.gdc.0.at="isa" 301options LINE30 302 303# |
304# The Numeric Processing eXtension driver. This is non-optional. |
305device npx 306 307# 308# `flags' for npx0: 309# 0x01 don't use the npx registers to optimize bcopy. 310# 0x02 don't use the npx registers to optimize bzero. 311# 0x04 don't use the npx registers to optimize copyin or copyout. |
312# The npx registers are normally used to optimize copying and zeroing when 313# all of the following conditions are satisfied: 314# I586_CPU is an option 315# the cpu is an i586 (perhaps not a Pentium) 316# the probe for npx0 succeeds 317# INT 16 exception handling works. 318# Then copying and zeroing using the npx registers is normally 30-100% faster. 319# The flags can be used to control cases where it doesn't work or is slower. --- 502 unchanged lines hidden --- |