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cc65/include/_6525.h

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/*****************************************************************************/
/* */
/* _6525.h */
/* */
/* Internal include file, do not use directly */
/* */
/* */
/* */
/* (C) 1998-2000 Ullrich von Bassewitz */
/* Wacholderweg 14 */
/* D-70597 Stuttgart */
/* EMail: uz@musoftware.de */
/* */
/* */
/* This software is provided 'as-is', without any expressed or implied */
/* warranty. In no event will the authors be held liable for any damages */
/* arising from the use of this software. */
/* */
/* Permission is granted to anyone to use this software for any purpose, */
/* including commercial applications, and to alter it and redistribute it */
/* freely, subject to the following restrictions: */
/* */
/* 1. The origin of this software must not be misrepresented; you must not */
/* claim that you wrote the original software. If you use this software */
/* in a product, an acknowledgment in the product documentation would be */
/* appreciated but is not required. */
/* 2. Altered source versions must be plainly marked as such, and must not */
/* be misrepresented as being the original software. */
/* 3. This notice may not be removed or altered from any source */
/* distribution. */
/* */
/*****************************************************************************/
#ifndef __6525_H
#define __6525_H
/* Define a structure with the 6525 register offsets. The shadow registers
* (if port C is unused) are currently not implemented, we would need a
* union to do that, however that would introduce an additional name.
*/
struct __6525 {
unsigned char pra; /* Port register A */
unsigned char prb; /* Port register B */
unsigned char prc; /* Port register C */
unsigned char ddra; /* Data direction register A */
unsigned char ddrb; /* Data direction register B */
unsigned char ddrc; /* Data direction register C */
unsigned char cr; /* Control register */
unsigned char air; /* Active interrupt register */
};
/* End of _6525.h */
#endif