[LinuxBIOS] #57: libusb host program for PLX NET20DC debug device

Segher Boessenkool segher at kernel.crashing.org
Sun Dec 3 13:42:07 CET 2006

> you could use io delay, one outb uses roughly 1us iirc.

On LPC, yes -- or 0.5us or something like that.  On ISA it's
a lot faster, on PCI too -- better do 20 or so outb's to be
safe.  Or use a *real* timer instead, you'll have to abstract
this for portability anyway...


More information about the coreboot mailing list