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39 lines
851 B
C
39 lines
851 B
C
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/*
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* _6525.h
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*
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* Ullrich von Bassewitz, 22.09.1998
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*
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* Internal include file, do not use directly.
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*
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*/
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#ifndef __6525_H
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#define __6525_H
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/* Define a structure with the 6525 register offsets. The shadow registers
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* (if port C is unused) are currently not implemented, we would need a
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* union to do that, however that would introduce an additional name.
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*/
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struct __6525 {
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unsigned char pra; /* Port register A */
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unsigned char prb; /* Port register B */
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unsigned char prc; /* Port register C */
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unsigned char ddra; /* Data direction register A */
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unsigned char ddrb; /* Data direction register B */
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unsigned char ddrc; /* Data direction register C */
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unsigned char cr; /* Control register */
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unsigned char air; /* Active interrupt register */
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};
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/* End of _6525.h */
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#endif
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