1 /*****************************************************************************/
5 /* Internal include file, do not use directly */
9 /* (C) 1998-2000 Ullrich von Bassewitz */
11 /* D-70597 Stuttgart */
12 /* EMail: uz@musoftware.de */
15 /* This software is provided 'as-is', without any expressed or implied */
16 /* warranty. In no event will the authors be held liable for any damages */
17 /* arising from the use of this software. */
19 /* Permission is granted to anyone to use this software for any purpose, */
20 /* including commercial applications, and to alter it and redistribute it */
21 /* freely, subject to the following restrictions: */
23 /* 1. The origin of this software must not be misrepresented; you must not */
24 /* claim that you wrote the original software. If you use this software */
25 /* in a product, an acknowledgment in the product documentation would be */
26 /* appreciated but is not required. */
27 /* 2. Altered source versions must be plainly marked as such, and must not */
28 /* be misrepresented as being the original software. */
29 /* 3. This notice may not be removed or altered from any source */
32 /*****************************************************************************/
41 /* Define a structure with the 6525 register offsets. The shadow registers
42 * (if port C is unused) are currently not implemented, we would need a
43 * union to do that, however that would introduce an additional name.
46 unsigned char pra; /* Port register A */
47 unsigned char prb; /* Port register B */
48 unsigned char prc; /* Port register C */
49 unsigned char ddra; /* Data direction register A */
50 unsigned char ddrb; /* Data direction register B */
51 unsigned char ddrc; /* Data direction register C */
52 unsigned char cr; /* Control register */
53 unsigned char air; /* Active interrupt register */