mirror of
https://github.com/cc65/cc65.git
synced 2024-11-05 08:05:51 +00:00
63 lines
3.3 KiB
C
63 lines
3.3 KiB
C
/*****************************************************************************/
|
|
/* */
|
|
/* _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
|
|
|
|
|
|
|