Adrien Destugues | 9b520c5 | 2013-02-10 21:55:33 +0000 | [diff] [blame^] | 1 | // Libthomson - C wrapper for Thomson MO/TO monitor and hardware |
| 2 | // Copyright 2012-2013, Adrien Destugues <pulkomandy@pulkomandy.tk> |
| 3 | // |
| 4 | // This file is distributed under the terms of the MIT licence. |
| 5 | |
| 6 | // You need the GCC-6809 compiler based on lwtools to use this file. |
| 7 | // http://www.boxofdoom.net/2011/09/22/how-to-compile-gcc-for-the-6809-processor-gcc6809/ |
| 8 | |
| 9 | #pragma once |
| 10 | |
| 11 | // 5 : MO5 / 8: TO8 |
| 12 | #ifndef PLATFORM |
| 13 | #error "make TARGET=TO8 or make TARGET=MO5" |
| 14 | #endif |
| 15 | |
| 16 | /////////////////////////////////////// |
| 17 | // THOMSON.H |
| 18 | /////////////////////////////////////// |
| 19 | |
| 20 | /* MONITOR ZERO-PAGE */ |
| 21 | struct Monitor { |
| 22 | unsigned char TERMIN[0x18]; |
| 23 | unsigned char STATUS; |
| 24 | unsigned char TABPT; |
| 25 | unsigned char RANG; |
| 26 | unsigned char COLN; |
| 27 | unsigned char TOPTAB; |
| 28 | unsigned char TOPRAN; |
| 29 | unsigned char BOTTAB; |
| 30 | unsigned char BOTRAN; |
| 31 | unsigned int SCRPT; |
| 32 | unsigned int STADR; |
| 33 | unsigned int ENDDR; |
| 34 | unsigned int BLOCZ; |
| 35 | unsigned char FORME; |
| 36 | unsigned char ATRANG; |
| 37 | unsigned char COLOUR; |
| 38 | unsigned char PAGFLG; |
| 39 | unsigned char SCROLS; |
| 40 | unsigned char CURSFL; |
| 41 | unsigned char COPCHR; |
| 42 | unsigned char EFCMPT; |
| 43 | unsigned char ITCMPT; |
| 44 | unsigned int PLOTX; |
| 45 | unsigned int PLOTY; |
| 46 | unsigned char CHDRAW; |
| 47 | unsigned char KEY; |
| 48 | unsigned char CMPKB; |
| 49 | unsigned char _unused1; |
| 50 | unsigned char TEMPO; |
| 51 | unsigned char _unused2; |
| 52 | unsigned char DUREE; |
| 53 | unsigned char WAVE; |
| 54 | unsigned int OCTAVE; |
| 55 | unsigned char K7DATA; |
| 56 | unsigned char K7LENG; |
| 57 | unsigned char PROPC; |
| 58 | unsigned char PRSTA; |
| 59 | unsigned int TEMP; |
| 60 | unsigned int SAVEST; |
| 61 | unsigned char DKOPC; |
| 62 | unsigned char DKDRV; |
| 63 | unsigned int DKTRK; |
| 64 | unsigned char DKSEC; |
| 65 | unsigned char DKNUM; |
| 66 | unsigned char DKSTA; |
| 67 | unsigned int DKBUF; |
| 68 | unsigned char DKTRACK[8]; |
| 69 | unsigned char SEQUCE; |
| 70 | unsigned char US1; |
| 71 | unsigned char ACCENT; |
| 72 | unsigned char SS2GET; |
| 73 | unsigned char SS3GET; |
| 74 | unsigned int SWIPT; |
| 75 | unsigned char _unused3; |
| 76 | unsigned int TIMEPT; |
| 77 | unsigned char SEMIRQ; |
| 78 | unsigned int IRQPT; |
| 79 | unsigned char _unused4; |
| 80 | unsigned int FIRQPT; |
| 81 | unsigned char _unused5; |
| 82 | unsigned int SIMUL; |
| 83 | unsigned char _unused6; |
| 84 | unsigned int CHRPTR; |
| 85 | unsigned char _unused7; |
| 86 | unsigned int USERAF; |
| 87 | unsigned char _unused8; |
| 88 | unsigned int GENPTR; |
| 89 | unsigned char _unused9; |
| 90 | unsigned char LATCLV; |
| 91 | unsigned char GRCODE; |
| 92 | unsigned char DECALG; |
| 93 | unsigned char _unusedA[6]; |
| 94 | unsigned char DEFDST; |
| 95 | unsigned char DKFLG; |
| 96 | }; |
| 97 | |
| 98 | _Static_assert(sizeof(Monitor) == 0x80, "Problem with struct packing, Monitor Zero-Page has wrong size."); |
| 99 | |
| 100 | |
| 101 | void printhex(unsigned char i); |
| 102 | extern unsigned char mark[]; |
| 103 | |
| 104 | /* HARDWARE */ |
| 105 | #define FDC_STATUS (*(volatile unsigned char*)(FDCBASE)) |
| 106 | |
| 107 | //////////////////////////////////////// |
| 108 | // MO5.H |
| 109 | //////////////////////////////////////// |
| 110 | |
| 111 | #if PLATFORM == 5 |
| 112 | /***************************************************************************** |
| 113 | * MOx CODE |
| 114 | ****************************************************************************/ |
| 115 | volatile Monitor* monitor = (volatile Monitor*)0x2000; |
| 116 | #define FDCBASE 0xA7D0 |
| 117 | |
| 118 | /* MONITOR ENTRY POINTS */ |
| 119 | |
| 120 | static inline void MENU() { |
| 121 | asm(" SWI \n" |
| 122 | " FCB 0" |
| 123 | ); |
| 124 | } |
| 125 | |
| 126 | static inline void PUTC(unsigned char car) { |
| 127 | asm(" swi \n" |
| 128 | " fcb 2" |
| 129 | ::"B" (car) |
| 130 | ); |
| 131 | } |
| 132 | |
| 133 | static inline void FRM0() { |
| 134 | asm(" SWI \n" |
| 135 | " FCB 4" |
| 136 | ); |
| 137 | } |
| 138 | |
| 139 | static inline void FRM1() { |
| 140 | asm(" SWI \n" |
| 141 | " FCB 6" |
| 142 | ); |
| 143 | } |
| 144 | |
| 145 | static inline void BEEP() { |
| 146 | asm(" SWI \n" |
| 147 | " FCB 8" |
| 148 | ); |
| 149 | } |
| 150 | |
| 151 | // TODO GETC and KTST return values in B,A and Z-flag. How to get these |
| 152 | // back in C ? |
| 153 | |
| 154 | static inline void DRAW(int x, int y) { |
| 155 | asm(" SWI \n" |
| 156 | " FCB 0xE" |
| 157 | :: "X" (x), "Y" (y) |
| 158 | ); |
| 159 | } |
| 160 | |
| 161 | static inline void PLOT(int x, int y) { |
| 162 | asm(" SWI \n" |
| 163 | " FCB 0x10" |
| 164 | :: "X" (x), "Y" (y) |
| 165 | ); |
| 166 | } |
| 167 | |
| 168 | static inline void CHPL(int x, int y) { |
| 169 | asm(" SWI \n" |
| 170 | " FCB 0x12" |
| 171 | :: "X" (x), "Y" (y) |
| 172 | ); |
| 173 | } |
| 174 | |
| 175 | // TODO GETP returns in B, LPIN in flag C, GETL flag C and regs XY |
| 176 | // GETS and JOYS in A |
| 177 | |
| 178 | enum Note { |
| 179 | DO = 0, |
| 180 | DOs = 1, |
| 181 | RE = 2, |
| 182 | REs = 3, |
| 183 | MI = 4, |
| 184 | FA = 5, |
| 185 | FAs = 6, |
| 186 | SO = 7, |
| 187 | SOs = 8, |
| 188 | LA = 9, |
| 189 | LAs = 9, |
| 190 | SI = 10, |
| 191 | UT = 11, |
| 192 | // TODO what happens with other values ? |
| 193 | }; |
| 194 | |
| 195 | static inline void NOTE(enum Note note) |
| 196 | { |
| 197 | asm(" SWI \n" |
| 198 | " FCB 0x1E" |
| 199 | :: "B" (note) |
| 200 | ); |
| 201 | } |
| 202 | |
| 203 | |
| 204 | /* FLOPPY DRIVE MONITOR ROM */ |
| 205 | // NOTE DKOPC was split into several commands to make it easier to use from |
| 206 | // C code. |
| 207 | static inline void write(unsigned char track, unsigned char sector, unsigned char* buffer) { |
| 208 | DKTRK = (unsigned char)track; |
| 209 | DKSEC = (unsigned char)sector; |
| 210 | DKOPC = 8; |
| 211 | DKBUF = (unsigned int)buffer; |
| 212 | |
| 213 | asm(" swi \n" |
| 214 | " fcb 0x26" |
| 215 | ); |
| 216 | } |
| 217 | |
| 218 | static inline void read(unsigned char track, unsigned char sector, unsigned char* output) |
| 219 | { |
| 220 | for(;;) |
| 221 | { |
| 222 | DKTRK = (unsigned char)track; |
| 223 | DKSEC = (unsigned char)sector; |
| 224 | DKOPC = 2; |
| 225 | DKBUF = (unsigned int)output; |
| 226 | |
| 227 | asm(" swi \n" |
| 228 | " fcb 0x26" |
| 229 | ); |
| 230 | |
| 231 | if (DKSTA == 0x44 || DKSTA == 0) return; // Sector read ok! |
| 232 | printhex(DKSTA); |
| 233 | } |
| 234 | } |
| 235 | |
| 236 | static inline void BOOT() { |
| 237 | asm(" SWI \n" |
| 238 | " FCB 0x28" |
| 239 | ); |
| 240 | } |
| 241 | |
| 242 | #else |
| 243 | /***************************************************************************** |
| 244 | * TOx CODE |
| 245 | ****************************************************************************/ |
| 246 | /* MONITOR ENTRY POINTS */ |
| 247 | #define mon_putc(car) { \ |
| 248 | asm("JSR \t0xE803 \t; TO8 PUTC\n"\ |
| 249 | ::"B" ((unsigned char) (car))\ |
| 250 | ); \ |
| 251 | } |
| 252 | |
| 253 | volatile Monitor* monitor = (volatile Monitor*)0x6000; |
| 254 | |
| 255 | #define write(track, sector, buffer) {\ |
| 256 | DKTRK = (unsigned char)track;\ |
| 257 | DKSEC = (unsigned char)sector;\ |
| 258 | DKOPC = 8;\ |
| 259 | DKBUF = (unsigned int)buffer;\ |
| 260 | \ |
| 261 | asm("JSR \t 0xE004 \t; TO8 DKCONT\n"\ |
| 262 | ); \ |
| 263 | } |
| 264 | |
| 265 | /* FLOPPY DRIVE MONITOR ROM */ |
| 266 | inline void read(unsigned char track, unsigned char sector, |
| 267 | unsigned char* output) |
| 268 | { |
| 269 | for(;;) |
| 270 | { |
| 271 | DKTRK = (unsigned char)track; |
| 272 | DKSEC = (unsigned char)sector; |
| 273 | DKOPC = 2; |
| 274 | DKBUF = (unsigned int)output; |
| 275 | |
| 276 | asm("JSR \t 0xE004 \t \n"); \ |
| 277 | |
| 278 | if (DKSTA == 0x44 || DKSTA == 0) return; // Sector read ok! |
| 279 | printhex(DKSTA); |
| 280 | } |
| 281 | } |
| 282 | #endif |
| 283 | |