C2D MBP Dev Notes

[nevir]

Sorry if this has already been posted (I couldn't find a post on this yet, though):

Apple has posted (hardware) developer notes on the new MacBook Pro. Thank TUAW for pointing that one out.

Also, major point #1 is that it looks like the processor bus is in fact only a 32-bit bus (is Napa64 just a rumor?). I'm no hardware expert, but it seems to me that it's unlikely that the 64-bitness of the processor is even going to be utilized on a bus like this. (or does it chunk up the data, and wouldn't that effectively slow down any 64-bit apps?)

Hell, can we even run 64-bit apps? Has anyone with a C2D MBP tested this yet?

 

[TYC]

Q: Please compile this, so it can be determined if 64bit is enabled.

#include <stdio.h>

main ()
{
int i=0;
long int li=0;
long long int lli=0;
double d=0;
char c;
char * p;

printf ("Size of Data Types on this System:\n\n");
/*---------------------------------------------*/
printf( "Char = %d bytes\n", sizeof(c) );
printf( "Integer = %d bytes\n", sizeof(i) );
printf( "Long Integer = %d bytes\n", sizeof(li) );
printf( "Long Long Integer = %d bytes\n", sizeof(lli) );
printf( "Double = %d bytes\n", sizeof(d) );
printf( "Pointer = %d bytes\n", sizeof(p) );
}

A: I compiled it, got that it was only in 32bit mode. A user on slashdot suggested turning on 64 bit by adding "-m64" to the compile string, which worked, I got a 64 bit response.

Size of Data Types on this System:

Char = 1 bytes
Integer = 4 bytes
Long Integer = 8 bytes
Long Long Integer = 8 bytes
Double = 8 bytes
Pointer = 8 bytes

As you can see - Brian got a 64bit response...
Therefore, I think it's safe to assume the processor is 64bit Enabled.

Cheers!


-TYC-

 

[nevir]

As you can see - Brian got a 64bit response...
Therefore, I think it's safe to assume the processor is 64bit Enabled.

Cheers!


-TYC-

excellent!

 

[thereubster]

Firewire 800 and 400 are on the same PCI bus

SO audio people take note, you wont get best performance from a FW800 drive and a FW 400 audio interface