mirror of https://github.com/cc65/cc65.git
107 lines
5.2 KiB
C
107 lines
5.2 KiB
C
/*****************************************************************************/
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/* */
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/* _mikey.h */
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/* */
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/* Atari Lynx, Mikey chip register hardware structures */
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/* */
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/* */
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/* This software is provided 'as-is', without any expressed or implied */
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/* warranty. In no event will the authors be held liable for any damages */
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/* arising from the use of this software. */
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/* */
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/* Permission is granted to anyone to use this software for any purpose, */
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/* including commercial applications, and to alter it and redistribute it */
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/* freely, subject to the following restrictions: */
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/* */
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/* 1. The origin of this software must not be misrepresented; you must not */
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/* claim that you wrote the original software. If you use this software */
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/* in a product, an acknowledgment in the product documentation would be */
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/* appreciated but is not required. */
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/* 2. Altered source versions must be plainly marked as such, and must not */
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/* be misrepresented as being the original software. */
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/* 3. This notice may not be removed or altered from any source */
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/* distribution. */
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/* */
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/*****************************************************************************/
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#ifndef __MIKEY_H
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#define __MIKEY_H
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/* timer structure */
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typedef struct _mikey_timer {
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unsigned char reload;
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unsigned char control;
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unsigned char count;
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unsigned char control2;
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} _mikey_timer;
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typedef struct _mikey_all_timers {
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struct _mikey_timer timer[8];
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} _mikey_all_timers;
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/* audio channel structure */
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typedef struct _mikey_audio {
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unsigned char volume;
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unsigned char feedback;
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unsigned char dac;
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unsigned char shiftlo;
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unsigned char reload;
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unsigned char control;
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unsigned char count;
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unsigned char other;
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} _mikey_audio;
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/* Define a structure with the mikey register offsets */
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struct __mikey {
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struct _mikey_timer timer0; // 0xFD00
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struct _mikey_timer timer1; // 0xFD04
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struct _mikey_timer timer2; // 0xFD08
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struct _mikey_timer timer3; // 0xFD0C
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struct _mikey_timer timer4; // 0xFD10
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struct _mikey_timer timer5; // 0xFD14
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struct _mikey_timer timer6; // 0xFD18
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struct _mikey_timer timer7; // 0xFD1C
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struct _mikey_audio channel_a; // 0xFD20
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struct _mikey_audio channel_b; // 0xFD28
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struct _mikey_audio channel_c; // 0xFD30
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struct _mikey_audio channel_d; // 0xFD38
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unsigned char attena; // 0xFD40 ?? not yet allocated?
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unsigned char attenb; // 0xFD41 |
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unsigned char attenc; // 0xFD42 |
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unsigned char attend; // 0xFD43 |
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unsigned char panning; // 0xFD44 |
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unsigned char unused0[11]; // 0xFD45 - 0xFD4F not used
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unsigned char mstereo; // 0xFD50 stereo control bits
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unsigned char unused1[47]; // 0xFD51 - 0xFD7F not used
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unsigned char intrst; // 0xFD80 interrupt poll 0
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unsigned char intset; // 0xFD81 interrupt poll 1
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unsigned char unused2[2]; // 0xFD82 - 0xFD83 not used
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unsigned char magrdy0; // 0xFD84 mag tape channel0 ready bit
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unsigned char magrdy1; // 0xFD85 mag tape channel1 ready bit
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unsigned char audin; // 0xFD86 audio in
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unsigned char sysctl1; // 0xFD87 control bits
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unsigned char mikeyrev; // 0xFD88 mikey hardware rev
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unsigned char mikeysrev; // 0xFD89 mikey software rev
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unsigned char iodir; // 0xFD8A parallel i/o data dir
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unsigned char iodat; // 0xFD8B parallel data
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unsigned char serctl; // 0xFD8C serial control register
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unsigned char serdat; // 0xFD8D serial data
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unsigned char unused3[2]; // 0xFD8E - 0xFD8F not used
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unsigned char sdoneack; // 0xFD90 suzy done acknowledge
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unsigned char cpusleep; // 0xFD91 cpu bus request disable
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unsigned char dispctl; // 0xFD92 video bus request enable, viddma
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unsigned char pkbkup; // 0xFD93 magic 'P' count
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unsigned char *scrbase; // 0xFD94 start address of video display
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unsigned char unused4[6]; // 0xFD96 - 0xFD9B not used
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unsigned char mtest0; // 0xFD9C
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unsigned char mtest1; // 0xFD9D
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unsigned char mtest2; // 0xFD9E
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unsigned char unused5; // 0xFD9F not used
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unsigned char palette[32]; // 0xFDA0 - 0xFDBF palette 32 bytes
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// 0xFDC0 - 0xFDFF not used
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};
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#endif
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