grf_rtreg.h revision 1.5
1 /* $NetBSD: grf_rtreg.h,v 1.5 1994/10/26 02:03:19 cgd Exp $ */ 2 3 #ifndef _GRF_RTREG_H 4 #define _GRF_RTREG_H 5 6 /* NOTE: this driver for the MacroSystem Retina board was only possible, 7 because MacroSystem provided information about the pecularities 8 of the board. THANKS! Competition in Europe among gfx board 9 manufacturers is rather tough, so Lutz Vieweg, who wrote the 10 initial driver, has made an agreement with MS not to document 11 the driver source (see also his Copyright disclaimer at the 12 beginning of grf_rt.cc and ite_rt.cc). 13 -> ALL comments and register defines after 14 -> "/* -------------- START OF CODE -------------- * /" 15 -> have been added by myself (mw) from studying the publically 16 -> available "NCR 77C22E+" Data Manual 17 18 Lutz' original driver source (without any of my comments) is 19 available on request. */ 20 21 22 #if 0 23 /* these are in dev/devices.h */ 24 25 /* definitions to find the autoconfig-board under 26 AmigaDOS */ 27 28 #define RETINA_MANUFACTURER 0x4754 29 #define RETINA_PRODUCT 6 30 #define RETINA_SERIALNUMBER 1 31 #endif 32 33 34 /* 35 For more information on the structure entries take a look at 36 grf_rt.cc and ite_rt.cc. 37 */ 38 39 struct MonDef { 40 41 /* first the general monitor characteristics */ 42 43 unsigned long FQ; 44 unsigned char FLG; 45 46 unsigned short MW; /* screen width in pixels */ 47 /* has to be at least a multiple of 8, */ 48 /* has to be a multiple of 64 in 256-color mode */ 49 /* if you want to use some great tricks */ 50 /* to speed up the vertical scrolling */ 51 unsigned short MH; /* screen height in pixels */ 52 53 unsigned short HBS; 54 unsigned short HSS; 55 unsigned short HSE; 56 unsigned short HBE; 57 unsigned short HT; 58 unsigned short VBS; 59 unsigned short VSS; 60 unsigned short VSE; 61 unsigned short VBE; 62 unsigned short VT; 63 64 unsigned short DEP; /* Color-depth, 4 for text-mode */ 65 /* 8 enables 256-color graphics-mode, */ 66 /* 16 and 24bit gfx not supported yet */ 67 68 unsigned char * PAL; /* points to 16*3 byte RGB-palette data */ 69 /* use LoadPalette() to set colors 0..255 */ 70 /* in 256-color-gfx mode */ 71 72 /* all following entries are font-specific in 73 text mode. Make sure your monitor 74 parameters are calculated for the 75 appropriate font width and height! 76 */ 77 78 unsigned short TX; /* Text-mode (DEP=4): */ 79 /* screen-width in characters */ 80 /* currently, TX has to be a */ 81 /* multiple of 16! */ 82 83 /* Gfx-mode (DEP > 4) */ 84 /* "logical" screen-width, */ 85 /* use values > MW to allow */ 86 /* hardware-panning */ 87 /* has to be a multiple of 8 */ 88 89 unsigned short TY; /* Text-mode: */ 90 /* screen-height in characters */ 91 92 /* Gfx-mode: "logical" screen */ 93 /* height for panning */ 94 95 /* the following values are currently unused for gfx-mode */ 96 97 unsigned short XY; /* TX*TY (speeds up some calcs.) */ 98 99 unsigned short FX; /* font-width (valid values: 4,7-16) */ 100 unsigned short FY; /* font-height (valid range: 1-32) */ 101 unsigned char * FData; /* pointer to the font-data */ 102 103 /* The font data is simply an array of bytes defining 104 the chars in ascending order, line by line. If your 105 font is wider than 8 pixel, FData has to be an 106 array of words. */ 107 108 unsigned short FLo; /* lowest character defined */ 109 unsigned short FHi; /* highest char. defined */ 110 111 }; 112 113 114 #if 0 115 /* Some ready-made MonDef structures are available in grf_rt.cc */ 116 117 extern struct MonDef MON_640_512_60; 118 extern struct MonDef MON_768_600_60; 119 extern struct MonDef MON_768_600_80; 120 121 /* text-screen resolutions wider than 1024 are currently damaged. 122 The VRAM access seems to become unstable at higher resolutions. 123 This may hopefully be subject of change. 124 */ 125 126 extern struct MonDef MON_1024_768_80; 127 extern struct MonDef MON_1024_1024_59; 128 129 /* WARNING: THE FOLLOWING MONITOR MODES EXCEED THE 90-MHz LIMIT THE PROCESSOR 130 HAS BEEN SPECIFIED FOR. USE AT YOUR OWN RISK (AND THINK ABOUT 131 MOUNTING SOME COOLING DEVICE AT THE PROCESSOR AND RAMDAC)! */ 132 extern struct MonDef MON_1280_1024_60; 133 extern struct MonDef MON_1280_1024_69; 134 135 /* Default monitor (change if this is too much for your monitor :-)) */ 136 #define DEFAULT_MONDEF MON_768_600_80 137 138 #else 139 140 /* nothing exported for now... */ 141 142 #endif 143 144 /* a standard 16-color palette is available in grf_rt.cc 145 and used by the standard monitor-definitions above */ 146 extern unsigned char NCRStdPalette[]; 147 148 /* The prototypes for C 149 with a little explanation 150 151 unsigned char * InitNCR(volatile void * BoardAdress, struct MonDef * md = &MON_640_512_60); 152 153 This routine initialises the Retina hardware, opens a 154 text- or gfx-mode screen, depending on the the value of MonDef.DEP, 155 and sets the cursor to position 0. 156 It takes as arguments a pointer to the hardware-base 157 address as it is denoted in the DevConf structure 158 of the AmigaDOS, and a pointer to a struct MonDef 159 which describes the screen-mode parameters. 160 161 The routine returns 0 if it was unable to open the screen, 162 or an unsigned char * to the display/attribute memory 163 when it succeeded. The organisation of the display memory 164 is a little strange in text-mode (Intel-typically...) : 165 166 Byte 00 01 02 03 04 05 06 etc. 167 Char0 Attr0 -- -- Char1 Attr1 -- etc. 168 169 You may set a character and its associated attribute byte 170 with a single word-access, or you may perform to byte writes 171 for the char and attribute. Each 2. word has no meaning, 172 and writes to theese locations are ignored. 173 174 The attribute byte for each character has the following 175 structure: 176 177 Bit 7 6 5 4 3 2 1 0 178 BLINK BACK2 BACK1 BACK0 FORE3 FORE2 FORE1 FORE0 179 180 Were FORE is the foreground-color index (0-15) and 181 BACK is the background color index (0-7). BLINK 182 enables blinking for the associated character. 183 The higher 8 colors in the standard palette are 184 lighter than the lower 8, so you may see FORE3 as 185 an intensity bit. If FORE == 1 or FORE == 9 and 186 BACK == 0 the character is underlined. Since I don't 187 think this looks good, it will probably change in a 188 future release. 189 190 There's no routine "SetChar" or "SetAttr" provided, 191 because I think it's so trivial... a function call 192 would be pure overhead. As an example, a routine 193 to set the char code and attribute at position x,y: 194 (assumed the value returned by InitNCR was stored 195 into "DispMem", the actual MonDef struct * is hold 196 in "MDef") 197 198 void SetChar(unsigned char chr, unsigned char attr, 199 unsigned short x, unsigned short y) { 200 201 unsigned struct MonDef * md = MDef; 202 unsigned char * c = DispMem + x*4 + y*md->TX*4; 203 204 *c++ = chr; 205 *c = attr; 206 207 } 208 209 In Gfx-mode, the memory organisation is rather simple, 210 1 byte per pixel in 256-color mode, one pixel after 211 each other, line by line. 212 213 Currently, InitNCR() disables the Retina VBLANK IRQ, 214 but beware: When running the Retina WB-Emu under 215 AmigaDOS, the VBLANK IRQ is ENABLED. 216 217 void SetCursorPos(unsigned short pos); 218 219 This routine sets the hardware-cursor position 220 to the screen location pos. pos can be calculated 221 as (x + y * md->TY). 222 Text-mode only! 223 224 void ScreenUp(void); 225 226 A somewhat optimized routine that scrolls the whole 227 screen up one row. A good idea to compile this piece 228 of code with optimization enabled. 229 Text-mode only! 230 231 void ScreenDown(void); 232 233 A somewhat optimized routine that scrolls the whole 234 screen down one row. A good idea to compile this piece 235 of code with optimization enabled. 236 Text-mode only! 237 238 unsigned char * SetSegmentPtr(unsigned long adress); 239 240 Sets the beginning of the 64k-memory segment to the 241 adress specified by the unsigned long. If adress MOD 64 242 is != 0, the return value will point to the segments 243 start in the Amiga adress space + (adress MOD 64). 244 Don't use more than (65536-64) bytes in the segment 245 you set if you aren't sure that (adress MOD 64) == 0. 246 See retina.doc from MS for further information. 247 248 void ClearScreen(unsigned char color); 249 250 Fills the whole screen with "color" - 256-color mode only! 251 252 void LoadPalette(unsigned char * pal, unsigned char firstcol, 253 unsigned char colors); 254 255 Loads the palette-registers. "pal" points to an array of unsigned char 256 triplets, for the red, green and blue component. "firstcol" determines the 257 number of the first palette-register to load (256 available). "colors" 258 is the number of colors you want to put in the palette registers. 259 260 void SetPalette(unsigned char colornum, unsigned char red, 261 unsigned char green, unsigned char blue); 262 263 Allows you to set a single color in the palette, "colornum" is the number 264 of the palette entry (256 available), "red", "green" and "blue" are the 265 three components. 266 267 void SetPanning(unsigned short xoff, unsigned short yoff); 268 269 Moves the logical coordinate (xoff, yoff) to the upper left corner 270 of your screen. Of course, you shouldn't specify excess values that would 271 show garbage in the lower right area of your screen... SetPanning() 272 does NOT check for boundaries. 273 */ 274 275 /* -------------- START OF CODE -------------- */ 276 277 /* read VGA register */ 278 #define vgar(ba, reg) (*(((volatile unsigned char *)ba)+reg)) 279 280 /* write VGA register */ 281 #define vgaw(ba, reg, val) \ 282 *(((volatile unsigned char *)ba)+reg) = val 283 284 /* defines for the used register addresses (mw) 285 286 NOTE: there are some registers that have different addresses when 287 in mono or color mode. We only support color mode, and thus 288 some addresses won't work in mono-mode! */ 289 290 /* General Registers: */ 291 #define GREG_STATUS0_R 0x43C2 292 #define GREG_STATUS1_R 0x43DA 293 #define GREG_MISC_OUTPUT_R 0x43CC 294 #define GREG_MISC_OUTPUT_W 0x43C2 295 #define GREG_FEATURE_CONTROL_R 0x43CA 296 #define GREG_FEATURE_CONTROL_W 0x43DA 297 #define GREG_POS 0x4102 298 299 /* Attribute Controller: */ 300 #define ACT_ADDRESS 0x43C0 301 #define ACT_ADDRESS_R 0x03C0 302 #define ACT_ADDRESS_W 0x43C0 303 #define ACT_ID_PALETTE0 0x00 304 #define ACT_ID_PALETTE1 0x01 305 #define ACT_ID_PALETTE2 0x02 306 #define ACT_ID_PALETTE3 0x03 307 #define ACT_ID_PALETTE4 0x04 308 #define ACT_ID_PALETTE5 0x05 309 #define ACT_ID_PALETTE6 0x06 310 #define ACT_ID_PALETTE7 0x07 311 #define ACT_ID_PALETTE8 0x08 312 #define ACT_ID_PALETTE9 0x09 313 #define ACT_ID_PALETTE10 0x0A 314 #define ACT_ID_PALETTE11 0x0B 315 #define ACT_ID_PALETTE12 0x0C 316 #define ACT_ID_PALETTE13 0x0D 317 #define ACT_ID_PALETTE14 0x0E 318 #define ACT_ID_PALETTE15 0x0F 319 #define ACT_ID_ATTR_MODE_CNTL 0x10 320 #define ACT_ID_OVERSCAN_COLOR 0x11 321 #define ACT_ID_COLOR_PLANE_ENA 0x12 322 #define ACT_ID_HOR_PEL_PANNING 0x13 323 #define ACT_ID_COLOR_SELECT 0x14 324 325 /* Graphics Controller: */ 326 #define GCT_ADDRESS 0x43CE 327 #define GCT_ADDRESS_R 0x03CE 328 #define GCT_ADDRESS_W 0x03CE 329 #define GCT_ID_SET_RESET 0x00 330 #define GCT_ID_ENABLE_SET_RESET 0x01 331 #define GCT_ID_COLOR_COMPARE 0x02 332 #define GCT_ID_DATA_ROTATE 0x03 333 #define GCT_ID_READ_MAP_SELECT 0x04 334 #define GCT_ID_GRAPHICS_MODE 0x05 335 #define GCT_ID_MISC 0x06 336 #define GCT_ID_COLOR_XCARE 0x07 337 #define GCT_ID_BITMASK 0x08 338 339 /* Sequencer: */ 340 #define SEQ_ADDRESS 0x43C4 341 #define SEQ_ADDRESS_R 0x03C4 342 #define SEQ_ADDRESS_W 0x03C4 343 #define SEQ_ID_RESET 0x00 344 #define SEQ_ID_CLOCKING_MODE 0x01 345 #define SEQ_ID_MAP_MASK 0x02 346 #define SEQ_ID_CHAR_MAP_SELECT 0x03 347 #define SEQ_ID_MEMORY_MODE 0x04 348 #define SEQ_ID_EXTENDED_ENABLE 0x05 /* down from here, all seq registers are NCR extensions */ 349 #define SEQ_ID_UNKNOWN1 0x06 /* it does exist so it's probably usefull */ 350 #define SEQ_ID_UNKNOWN2 0x07 /* it does exist so it's probably usefull */ 351 #define SEQ_ID_CHIP_ID 0x08 352 #define SEQ_ID_UNKNOWN3 0x09 /* it does exist so it's probably usefull */ 353 #define SEQ_ID_CURSOR_COLOR1 0x0A 354 #define SEQ_ID_CURSOR_COLOR0 0x0B 355 #define SEQ_ID_CURSOR_CONTROL 0x0C 356 #define SEQ_ID_CURSOR_X_LOC_HI 0x0D 357 #define SEQ_ID_CURSOR_X_LOC_LO 0x0E 358 #define SEQ_ID_CURSOR_Y_LOC_HI 0x0F 359 #define SEQ_ID_CURSOR_Y_LOC_LO 0x10 360 #define SEQ_ID_CURSOR_X_INDEX 0x11 361 #define SEQ_ID_CURSOR_Y_INDEX 0x12 362 #define SEQ_ID_CURSOR_STORE_HI 0x13 /* printed manual is wrong about these.. */ 363 #define SEQ_ID_CURSOR_STORE_LO 0x14 364 #define SEQ_ID_CURSOR_ST_OFF_HI 0x15 365 #define SEQ_ID_CURSOR_ST_OFF_LO 0x16 366 #define SEQ_ID_CURSOR_PIXELMASK 0x17 367 #define SEQ_ID_PRIM_HOST_OFF_HI 0x18 368 #define SEQ_ID_PRIM_HOST_OFF_LO 0x19 369 #define SEQ_ID_DISP_OFF_HI 0x1A 370 #define SEQ_ID_DISP_OFF_LO 0x1B 371 #define SEQ_ID_SEC_HOST_OFF_HI 0x1C 372 #define SEQ_ID_SEC_HOST_OFF_LO 0x1D 373 #define SEQ_ID_EXTENDED_MEM_ENA 0x1E 374 #define SEQ_ID_EXT_CLOCK_MODE 0x1F 375 #define SEQ_ID_EXT_VIDEO_ADDR 0x20 376 #define SEQ_ID_EXT_PIXEL_CNTL 0x21 377 #define SEQ_ID_BUS_WIDTH_FEEDB 0x22 378 #define SEQ_ID_PERF_SELECT 0x23 379 #define SEQ_ID_COLOR_EXP_WFG 0x24 380 #define SEQ_ID_COLOR_EXP_WBG 0x25 381 #define SEQ_ID_EXT_RW_CONTROL 0x26 382 #define SEQ_ID_MISC_FEATURE_SEL 0x27 383 #define SEQ_ID_COLOR_KEY_CNTL 0x28 384 #define SEQ_ID_COLOR_KEY_MATCH 0x29 385 #define SEQ_ID_UNKNOWN4 0x2A 386 #define SEQ_ID_UNKNOWN5 0x2B 387 #define SEQ_ID_UNKNOWN6 0x2C 388 #define SEQ_ID_CRC_CONTROL 0x2D 389 #define SEQ_ID_CRC_DATA_LOW 0x2E 390 #define SEQ_ID_CRC_DATA_HIGH 0x2F 391 392 /* CRT Controller: */ 393 #define CRT_ADDRESS 0x43D4 394 #define CRT_ADDRESS_R 0x03D4 395 #define CRT_ADDRESS_W 0x03D4 396 #define CRT_ID_HOR_TOTAL 0x00 397 #define CRT_ID_HOR_DISP_ENA_END 0x01 398 #define CRT_ID_START_HOR_BLANK 0x02 399 #define CRT_ID_END_HOR_BLANK 0x03 400 #define CRT_ID_START_HOR_RETR 0x04 401 #define CRT_ID_END_HOR_RETR 0x05 402 #define CRT_ID_VER_TOTAL 0x06 403 #define CRT_ID_OVERFLOW 0x07 404 #define CRT_ID_PRESET_ROW_SCAN 0x08 405 #define CRT_ID_MAX_SCAN_LINE 0x09 406 #define CRT_ID_CURSOR_START 0x0A 407 #define CRT_ID_CURSOR_END 0x0B 408 #define CRT_ID_START_ADDR_HIGH 0x0C 409 #define CRT_ID_START_ADDR_LOW 0x0D 410 #define CRT_ID_CURSOR_LOC_HIGH 0x0E 411 #define CRT_ID_CURSOR_LOC_LOW 0x0F 412 #define CRT_ID_START_VER_RETR 0x10 413 #define CRT_ID_END_VER_RETR 0x11 414 #define CRT_ID_VER_DISP_ENA_END 0x12 415 #define CRT_ID_OFFSET 0x13 416 #define CRT_ID_UNDERLINE_LOC 0x14 417 #define CRT_ID_START_VER_BLANK 0x15 418 #define CRT_ID_END_VER_BLANK 0x16 419 #define CRT_ID_MODE_CONTROL 0x17 420 #define CRT_ID_LINE_COMPARE 0x18 421 #define CRT_ID_UNKNOWN1 0x19 /* are these register really void ? */ 422 #define CRT_ID_UNKNOWN2 0x1A 423 #define CRT_ID_UNKNOWN3 0x1B 424 #define CRT_ID_UNKNOWN4 0x1C 425 #define CRT_ID_UNKNOWN5 0x1D 426 #define CRT_ID_UNKNOWN6 0x1E 427 #define CRT_ID_UNKNOWN7 0x1F 428 #define CRT_ID_UNKNOWN8 0x20 429 #define CRT_ID_UNKNOWN9 0x21 430 #define CRT_ID_UNKNOWN10 0x22 431 #define CRT_ID_UNKNOWN11 0x23 432 #define CRT_ID_UNKNOWN12 0x24 433 #define CRT_ID_UNKNOWN13 0x25 434 #define CRT_ID_UNKNOWN14 0x26 435 #define CRT_ID_UNKNOWN15 0x27 436 #define CRT_ID_UNKNOWN16 0x28 437 #define CRT_ID_UNKNOWN17 0x29 438 #define CRT_ID_UNKNOWN18 0x2A 439 #define CRT_ID_UNKNOWN19 0x2B 440 #define CRT_ID_UNKNOWN20 0x2C 441 #define CRT_ID_UNKNOWN21 0x2D 442 #define CRT_ID_UNKNOWN22 0x2E 443 #define CRT_ID_UNKNOWN23 0x2F 444 #define CRT_ID_EXT_HOR_TIMING1 0x30 /* down from here, all crt registers are NCR extensions */ 445 #define CRT_ID_EXT_START_ADDR 0x31 446 #define CRT_ID_EXT_HOR_TIMING2 0x32 447 #define CRT_ID_EXT_VER_TIMING 0x33 448 449 /* Video DAC (these are *pure* guesses from the usage of these registers, 450 I don't have a data sheet for this chip:-/) */ 451 #define VDAC_REG_D 0x800d /* well.. */ 452 #define VDAC_REG_SELECT 0x8001 /* perhaps.. */ 453 #define VDAC_REG_DATA 0x8003 /* dito.. */ 454 455 #define WGfx(ba, idx, val) \ 456 do { vgaw(ba, GCT_ADDRESS, idx); vgaw(ba, GCT_ADDRESS_W , val); } while (0) 457 458 #define WSeq(ba, idx, val) \ 459 do { vgaw(ba, SEQ_ADDRESS, idx); vgaw(ba, SEQ_ADDRESS_W , val); } while (0) 460 461 #define WCrt(ba, idx, val) \ 462 do { vgaw(ba, CRT_ADDRESS, idx); vgaw(ba, CRT_ADDRESS_W , val); } while (0) 463 464 #define WAttr(ba, idx, val) \ 465 do { vgaw(ba, ACT_ADDRESS, idx); vgaw(ba, ACT_ADDRESS_W, val); } while (0) 466 467 #define Map(m) \ 468 do { WGfx(ba, GCT_ID_READ_MAP_SELECT, m & 3 ); WSeq(ba, SEQ_ID_MAP_MASK, (1 << (m & 3))); } while (0) 469 470 static inline unsigned char RAttr(volatile void * ba, short idx) { 471 vgaw (ba, ACT_ADDRESS, idx); 472 return vgar (ba, ACT_ADDRESS_R); 473 } 474 475 static inline unsigned char RSeq(volatile void * ba, short idx) { 476 vgaw (ba, SEQ_ADDRESS, idx); 477 return vgar (ba, SEQ_ADDRESS_R); 478 } 479 480 static inline unsigned char RCrt(volatile void * ba, short idx) { 481 vgaw (ba, CRT_ADDRESS, idx); 482 return vgar (ba, CRT_ADDRESS_R); 483 } 484 485 static inline unsigned char RGfx(volatile void * ba, short idx) { 486 vgaw(ba, GCT_ADDRESS, idx); 487 return vgar (ba, GCT_ADDRESS_R); 488 } 489 490 int grfrt_cnprobe __P((void)); 491 void grfrt_iteinit __P((struct grf_softc *)); 492 #endif /* _GRF_RTREG_H */ 493
Indexes created Fri Oct 03 02:09:57 GMT 2025