On 9/14/06, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote:
As /sys/doc/port.ms says,
---
The compiler assumes that the target CPU supports the optional byte and
word memory operations (the ``BWX'' extension).
If you have an old system, you can generate code without using the extension
by passing the loader the
.CW -x
option.
---
That may not be enough though; dhog thought that some of the
device drivers might depend upon byte or word accesses.
Plus you'd need to check all the assembly language code for
BWX operations.
I recall that there was some kind of EV56 emulator for EV45, which
added BWX and some other operations to running cpu (like FPU
emulator). The problem is that it might be hidden behind some
proprietary license.
If all goes wrong I'll just need to grep them all...
And of course details of I/O and memory management vary across
Alpha models.
Isn't that the reason PAL exists? ;-)
Well, I'll look into netbsd/alpha code for AS255 and check relevant
parts. IIRC many things were accomplished in netbsd by using OSF
PALcode.
But first I'll need to get a place to put my normal computer to do any
work, so don't expect anything fast :-)
--
Paul Lasek
