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/* Shows filter status of Soundblaster Pro card */


char *filtmode[2] = {"LOW","HIGH"};

unsigned char in_filter;

main()
{
	outportb(0x224,0x0C);
	in_filter = (inportb(0x225) & 0x38) >> 3;
	if(!(in_filter & 4))
     {
		printf("Input Filter is ON\n");
		printf("Filter type: %s\n", filtmode[in_filter & 1]);
	}
	else
		printf("Input Filter is OFF\n");

	outportb(0x224,0x0E);
	if(! ( inportb(0x225) &  0x20) )
		printf("Output filter is ON\n");
	else
		printf("Output filter is OFF\n");
}
.

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