On Saturday 24 September 2005 12:26, Stefan Lucke wrote:
> [snip]
>
> With this program I get
> bodega2 root # ./via-revision
> Revision = 0xb7fe0a03
>
> When "val" is initialized to 0 I get:
> bodega2 root # ./via-revision
> Revision = 0x3
DOH!!!! I removed the val = 0 line to tidy it up! For me, it still works
without doing so. Here's a new version which should zero-pad the revision
number so it's more readable:
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <sys/mman.h>
#include <stdlib.h>
#include <unistd.h>
#include <stdio.h>
#include <string.h>
void main ()
{
char *filename = "/proc/bus/pci/00/00.0";
int fd;
int val = 0;
unsigned char reg = 0xf6;
fd = open( filename, O_RDONLY );
if (fd < 0) {
printf( "DirectFB/Unichrome: Error opening `%s'!\n", filename );
exit(0);
}
if (lseek( fd, reg, SEEK_SET ) == reg) {
if (read( fd, &val, 1 ) == 1) {
close( fd );
printf("Revision = 0x%02x\n", val);
exit(0);
} else {
printf("Error reading revision number\n");
}
}
close( fd );
}
> And that translates to which chip version ?
I _think_ it is the revision of the north bridge chip (I grabbed it from bits
of DirectFB/gfxdrivers/unichrome/unichrome.c).
> bodega2 root # cat /proc/cpuinfo
> processor : 0
> vendor_id : CentaurHauls
> cpu family : 6
> model : 9
> model name : VIA Nehemiah
> stepping : 1
> cpu MHz : 999.553
> cache size : 64 KB
For me:
processor : 0
vendor_id : CentaurHauls
cpu family : 6
model : 9
model name : VIA Nehemiah
stepping : 8
cpu MHz : 1199.925
cache size : 64 KB
Which looks very similar to what you get! My board is an Epia MII 12000.
Cheers,
Laz
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