[9b520c5] | 1 | // Libthomson - C wrapper for Thomson MO/TO monitor and hardware
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| 2 | // Copyright 2012-2013, Adrien Destugues <pulkomandy@pulkomandy.tk>
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| 3 | //
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| 4 | // This file is distributed under the terms of the MIT licence.
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| 5 |
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| 6 | // You need the GCC-6809 compiler based on lwtools to use this file.
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| 7 | // http://www.boxofdoom.net/2011/09/22/how-to-compile-gcc-for-the-6809-processor-gcc6809/
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| 8 |
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| 9 | #pragma once
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| 10 |
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| 11 | // 5 : MO5 / 8: TO8
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| 12 | #ifndef PLATFORM
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| 13 | #error "make TARGET=TO8 or make TARGET=MO5"
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| 14 | #endif
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| 15 |
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| 16 | ///////////////////////////////////////
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| 17 | // THOMSON.H
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| 18 | ///////////////////////////////////////
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| 19 |
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| 20 | /* MONITOR ZERO-PAGE */
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| 21 | struct Monitor {
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| 22 | unsigned char TERMIN[0x18];
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| 23 | unsigned char STATUS;
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| 24 | unsigned char TABPT;
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| 25 | unsigned char RANG;
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| 26 | unsigned char COLN;
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| 27 | unsigned char TOPTAB;
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| 28 | unsigned char TOPRAN;
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| 29 | unsigned char BOTTAB;
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| 30 | unsigned char BOTRAN;
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| 31 | unsigned int SCRPT;
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| 32 | unsigned int STADR;
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| 33 | unsigned int ENDDR;
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| 34 | unsigned int BLOCZ;
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| 35 | unsigned char FORME;
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| 36 | unsigned char ATRANG;
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| 37 | unsigned char COLOUR;
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| 38 | unsigned char PAGFLG;
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| 39 | unsigned char SCROLS;
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| 40 | unsigned char CURSFL;
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| 41 | unsigned char COPCHR;
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| 42 | unsigned char EFCMPT;
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| 43 | unsigned char ITCMPT;
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| 44 | unsigned int PLOTX;
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| 45 | unsigned int PLOTY;
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| 46 | unsigned char CHDRAW;
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| 47 | unsigned char KEY;
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| 48 | unsigned char CMPKB;
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| 49 | unsigned char _unused1;
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| 50 | unsigned char TEMPO;
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| 51 | unsigned char _unused2;
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| 52 | unsigned char DUREE;
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| 53 | unsigned char WAVE;
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| 54 | unsigned int OCTAVE;
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| 55 | unsigned char K7DATA;
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| 56 | unsigned char K7LENG;
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| 57 | unsigned char PROPC;
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| 58 | unsigned char PRSTA;
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| 59 | unsigned int TEMP;
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| 60 | unsigned int SAVEST;
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| 61 | unsigned char DKOPC;
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| 62 | unsigned char DKDRV;
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| 63 | unsigned int DKTRK;
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| 64 | unsigned char DKSEC;
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| 65 | unsigned char DKNUM;
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| 66 | unsigned char DKSTA;
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| 67 | unsigned int DKBUF;
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| 68 | unsigned char DKTRACK[8];
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| 69 | unsigned char SEQUCE;
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| 70 | unsigned char US1;
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| 71 | unsigned char ACCENT;
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| 72 | unsigned char SS2GET;
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| 73 | unsigned char SS3GET;
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| 74 | unsigned int SWIPT;
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| 75 | unsigned char _unused3;
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| 76 | unsigned int TIMEPT;
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| 77 | unsigned char SEMIRQ;
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| 78 | unsigned int IRQPT;
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| 79 | unsigned char _unused4;
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| 80 | unsigned int FIRQPT;
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| 81 | unsigned char _unused5;
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| 82 | unsigned int SIMUL;
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| 83 | unsigned char _unused6;
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| 84 | unsigned int CHRPTR;
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| 85 | unsigned char _unused7;
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| 86 | unsigned int USERAF;
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| 87 | unsigned char _unused8;
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| 88 | unsigned int GENPTR;
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| 89 | unsigned char _unused9;
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| 90 | unsigned char LATCLV;
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| 91 | unsigned char GRCODE;
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| 92 | unsigned char DECALG;
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| 93 | unsigned char _unusedA[6];
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| 94 | unsigned char DEFDST;
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| 95 | unsigned char DKFLG;
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| 96 | };
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| 97 |
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| 98 | _Static_assert(sizeof(Monitor) == 0x80, "Problem with struct packing, Monitor Zero-Page has wrong size.");
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| 99 |
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| 100 |
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| 101 | void printhex(unsigned char i);
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| 102 | extern unsigned char mark[];
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| 103 |
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| 104 | /* HARDWARE */
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| 105 | #define FDC_STATUS (*(volatile unsigned char*)(FDCBASE))
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| 106 |
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| 107 | ////////////////////////////////////////
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| 108 | // MO5.H
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| 109 | ////////////////////////////////////////
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| 110 |
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| 111 | #if PLATFORM == 5
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| 112 | /*****************************************************************************
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| 113 | * MOx CODE
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| 114 | ****************************************************************************/
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| 115 | volatile Monitor* monitor = (volatile Monitor*)0x2000;
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| 116 | #define FDCBASE 0xA7D0
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| 117 |
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| 118 | /* MONITOR ENTRY POINTS */
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| 119 |
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| 120 | static inline void MENU() {
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| 121 | asm(" SWI \n"
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| 122 | " FCB 0"
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| 123 | );
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| 124 | }
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| 125 |
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| 126 | static inline void PUTC(unsigned char car) {
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| 127 | asm(" swi \n"
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| 128 | " fcb 2"
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| 129 | ::"B" (car)
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| 130 | );
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| 131 | }
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| 132 |
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| 133 | static inline void FRM0() {
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| 134 | asm(" SWI \n"
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| 135 | " FCB 4"
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| 136 | );
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| 137 | }
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| 138 |
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| 139 | static inline void FRM1() {
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| 140 | asm(" SWI \n"
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| 141 | " FCB 6"
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| 142 | );
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| 143 | }
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| 144 |
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| 145 | static inline void BEEP() {
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| 146 | asm(" SWI \n"
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| 147 | " FCB 8"
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| 148 | );
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| 149 | }
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| 150 |
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| 151 | // TODO GETC and KTST return values in B,A and Z-flag. How to get these
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| 152 | // back in C ?
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| 153 |
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| 154 | static inline void DRAW(int x, int y) {
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| 155 | asm(" SWI \n"
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| 156 | " FCB 0xE"
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| 157 | :: "X" (x), "Y" (y)
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| 158 | );
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| 159 | }
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| 160 |
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| 161 | static inline void PLOT(int x, int y) {
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| 162 | asm(" SWI \n"
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| 163 | " FCB 0x10"
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| 164 | :: "X" (x), "Y" (y)
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| 165 | );
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| 166 | }
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| 167 |
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| 168 | static inline void CHPL(int x, int y) {
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| 169 | asm(" SWI \n"
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| 170 | " FCB 0x12"
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| 171 | :: "X" (x), "Y" (y)
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| 172 | );
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| 173 | }
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| 174 |
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| 175 | // TODO GETP returns in B, LPIN in flag C, GETL flag C and regs XY
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| 176 | // GETS and JOYS in A
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| 177 |
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| 178 | enum Note {
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| 179 | DO = 0,
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| 180 | DOs = 1,
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| 181 | RE = 2,
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| 182 | REs = 3,
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| 183 | MI = 4,
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| 184 | FA = 5,
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| 185 | FAs = 6,
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| 186 | SO = 7,
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| 187 | SOs = 8,
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| 188 | LA = 9,
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| 189 | LAs = 9,
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| 190 | SI = 10,
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| 191 | UT = 11,
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| 192 | // TODO what happens with other values ?
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| 193 | };
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| 194 |
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| 195 | static inline void NOTE(enum Note note)
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| 196 | {
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| 197 | asm(" SWI \n"
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| 198 | " FCB 0x1E"
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| 199 | :: "B" (note)
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| 200 | );
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| 201 | }
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| 202 |
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| 203 |
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| 204 | /* FLOPPY DRIVE MONITOR ROM */
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| 205 | // NOTE DKOPC was split into several commands to make it easier to use from
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| 206 | // C code.
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| 207 | static inline void write(unsigned char track, unsigned char sector, unsigned char* buffer) {
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| 208 | DKTRK = (unsigned char)track;
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| 209 | DKSEC = (unsigned char)sector;
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| 210 | DKOPC = 8;
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| 211 | DKBUF = (unsigned int)buffer;
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| 212 |
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| 213 | asm(" swi \n"
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| 214 | " fcb 0x26"
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| 215 | );
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| 216 | }
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| 217 |
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| 218 | static inline void read(unsigned char track, unsigned char sector, unsigned char* output)
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| 219 | {
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| 220 | for(;;)
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| 221 | {
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| 222 | DKTRK = (unsigned char)track;
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| 223 | DKSEC = (unsigned char)sector;
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| 224 | DKOPC = 2;
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| 225 | DKBUF = (unsigned int)output;
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| 226 |
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| 227 | asm(" swi \n"
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| 228 | " fcb 0x26"
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| 229 | );
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| 230 |
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| 231 | if (DKSTA == 0x44 || DKSTA == 0) return; // Sector read ok!
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| 232 | printhex(DKSTA);
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| 233 | }
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| 234 | }
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| 235 |
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| 236 | static inline void BOOT() {
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| 237 | asm(" SWI \n"
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| 238 | " FCB 0x28"
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| 239 | );
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| 240 | }
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| 241 |
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| 242 | #else
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| 243 | /*****************************************************************************
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| 244 | * TOx CODE
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| 245 | ****************************************************************************/
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| 246 | /* MONITOR ENTRY POINTS */
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| 247 | #define mon_putc(car) { \
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| 248 | asm("JSR \t0xE803 \t; TO8 PUTC\n"\
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| 249 | ::"B" ((unsigned char) (car))\
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| 250 | ); \
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| 251 | }
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| 252 |
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| 253 | volatile Monitor* monitor = (volatile Monitor*)0x6000;
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| 254 |
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| 255 | #define write(track, sector, buffer) {\
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| 256 | DKTRK = (unsigned char)track;\
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| 257 | DKSEC = (unsigned char)sector;\
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| 258 | DKOPC = 8;\
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| 259 | DKBUF = (unsigned int)buffer;\
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| 260 | \
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| 261 | asm("JSR \t 0xE004 \t; TO8 DKCONT\n"\
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| 262 | ); \
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| 263 | }
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| 264 |
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| 265 | /* FLOPPY DRIVE MONITOR ROM */
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| 266 | inline void read(unsigned char track, unsigned char sector,
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| 267 | unsigned char* output)
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| 268 | {
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| 269 | for(;;)
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| 270 | {
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| 271 | DKTRK = (unsigned char)track;
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| 272 | DKSEC = (unsigned char)sector;
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| 273 | DKOPC = 2;
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| 274 | DKBUF = (unsigned int)output;
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| 275 |
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| 276 | asm("JSR \t 0xE004 \t \n"); \
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| 277 |
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| 278 | if (DKSTA == 0x44 || DKSTA == 0) return; // Sector read ok!
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| 279 | printhex(DKSTA);
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| 280 | }
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| 281 | }
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| 282 | #endif
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| 283 |
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