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44 lines
1.1 KiB
C
44 lines
1.1 KiB
C
/*
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* _6526.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 __6526_H
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#define __6526_H
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/* Define a structure with the 6526 register offsets */
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struct __6526 {
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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 ddra; /* Data direction register A */
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unsigned char ddrb; /* Data direction register B */
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unsigned char ta_lo; /* Timer A, low byte */
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unsigned char ta_hi; /* Timer A, high byte */
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unsigned char tb_lo; /* Timer B, low byte */
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unsigned char tb_hi; /* Timer B, high byte */
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unsigned char tod_10; /* TOD, 1/10 sec. */
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unsigned char tod_sec; /* TOD, seconds */
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unsigned char tod_min; /* TOD, minutes */
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unsigned char tod_hour; /* TOD, hours */
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unsigned char sdr; /* Serial data register */
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unsigned char icr; /* Interrupt control register */
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unsigned char cra; /* Control register A */
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unsigned char crb; /* Control register B */
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};
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/* End of _6526.h */
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#endif
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