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- (c) Copyright 1989-1999 Amiga, Inc. All rights reserved.
- The information contained herein is subject to change without notice, and
- is provided "as is" without warranty of any kind, either expressed or implied.
- The entire risk as to the use of this information is assumed by the user.
-
-
- #define NTSC_CLOCK (3579545)
- #define PAL_CLOCK (3546895)
-
- ULONG clock, clockx100, periodx10, period, hertzx10, sampleBytes;
-
- /* Check GfxBase->DisplayFlags and set clock to appropriate value
- * Set hertzx10 to 10 * desired frequency in hertz
- * Set sampleBytes to number of bytes in the one cycle waveform sample
- */
-
- clockx100 = 100 * clock;
- periodx10 = (clockx100 / hertzx10) / sampleBytes;
- /* round off */
- period = (periodx10 + 5) / 10;
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