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			29 lines
		
	
	
		
			868 B
		
	
	
	
		
			C++
		
	
	
	
	
	
			
		
		
	
	
			29 lines
		
	
	
		
			868 B
		
	
	
	
		
			C++
		
	
	
	
	
	
| #include "lib/core/globals.h"
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| #include "arch/c64/c64.h"
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| 
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| /*
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|  *   Track   Sectors/track   # Sectors   Storage in Bytes   Clock rate
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|  *   -----   -------------   ---------   ----------------   ----------
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|  *    1-17        21            357           7820             3.25
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|  *   18-24        19            133           7170             3.5
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|  *   25-30        18            108           6300             3.75
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|  *   31-40(*)     17             85           6020             4
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|  *                              ---
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|  *                              683 (for a 35 track image)
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|  *
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|  * The clock rate is normalised for a 200ms drive.
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|  */
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| 
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| nanoseconds_t clockPeriodForC64Track(unsigned track)
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| {
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|     constexpr double b = 8.0;
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| 
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|     if (track < 17)
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|         return 26.0 / b;
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|     if (track < 24)
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|         return 28.0 / b;
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|     if (track < 30)
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|         return 30.0 / b;
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|     return 32.0 / b;
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| }
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