Technical Q&A's

HW 18 - Getting the Processor Type and Speed on a PCI Mac (15-July-95)

Q I am trying to write an application that, when run on a PCI Mac, queries the Name Registry database for the processor type and speed. I've been unable to find anything in Inside Macintosh: Designing PCI Cards and Drivers on this topic. Where can I find this information?

A The Name Registry does not contain this information, but you can obtain it from the Gestalt Manager, just as you did on 68K Macs. This is discussed in Inside Macintosh: Operating System Utilities.

If you have a utility that already does this on a 68K Mac, it should also work on a PCI Mac. The code snippet below shows how to get the processor type:

//	DTS snippet by Wayne Flansburg January 19, 1995

//	This snippet calls the Gestalt Manager to read the machine type.

#include <stdio.h>#include <GestaltEqu.h>

// prototypes
void	main(void);

void	main(void)
{
	OSErr iErr = 0;
	OSType selector = 'mach';
	long response = 0;
	
	printf("DTS Absolutely Free (Gratis) Snippet\n\n");

	iErr = Gestalt(selector,&response);
	if(!iErr)
		printf("The informational selector 'mach' is %ld \n", response);
	else
		printf("Sorry, an error has occured\n");

}

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