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 6526 register offsets.
42 * NOTE: The timer registers are not declared as 16 bit registers, because
43 * the order in which the two 8 bit halves are written is important, and
44 * the compiler doesn't guarantee any order when writing 16 bit values.
47 unsigned char pra; /* Port register A */
48 unsigned char prb; /* Port register B */
49 unsigned char ddra; /* Data direction register A */
50 unsigned char ddrb; /* Data direction register B */
51 unsigned char ta_lo; /* Timer A, low byte */
52 unsigned char ta_hi; /* Timer A, high byte */
53 unsigned char tb_lo; /* Timer B, low byte */
54 unsigned char tb_hi; /* Timer B, high byte */
55 unsigned char tod_10; /* TOD, 1/10 sec. */
56 unsigned char tod_sec; /* TOD, seconds */
57 unsigned char tod_min; /* TOD, minutes */
58 unsigned char tod_hour; /* TOD, hours */
59 unsigned char sdr; /* Serial data register */
60 unsigned char icr; /* Interrupt control register */
61 unsigned char cra; /* Control register A */
62 unsigned char crb; /* Control register B */