ite_tv.c revision 1.2
1 /* $NetBSD: ite_tv.c,v 1.2 1997/02/03 21:40:45 oki Exp $ */ 2 3 /* 4 * Copyright (c) 1997 Masaru Oki. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by Masaru Oki. 18 * 4. The name of the author may not be used to endorse or promote products 19 * derived from this software without specific prior written permission 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 #include <sys/param.h> 34 #include <sys/device.h> 35 #include <sys/proc.h> 36 #include <sys/systm.h> 37 38 #include <x68k/x68k/iodevice.h> 39 #include <x68k/dev/itevar.h> 40 #include <x68k/dev/grfioctl.h> 41 #include <x68k/dev/grfvar.h> 42 43 /* 44 * ITE device dependent routine for X680x0 Text-Video framebuffer. 45 * Use X680x0 ROM fixed width font (8x16) 46 */ 47 48 #define CRTC (IODEVbase->io_crtc) 49 50 /* 51 * font constant 52 */ 53 #define FONTWIDTH 8 54 #define FONTHEIGHT 16 55 #define UNDERLINE 14 56 57 /* 58 * framebuffer constant 59 */ 60 #define PLANEWIDTH 1024 61 #define PLANEHEIGHT 1024 62 #define PLANELINES (PLANEHEIGHT / FONTHEIGHT) 63 #define ROWBYTES (PLANEWIDTH / FONTWIDTH) 64 #define PLANESIZE (PLANEHEIGHT * ROWBYTES) 65 66 u_int tv_top; 67 u_char *tv_row[PLANELINES]; 68 char *tv_font[256]; 69 __volatile char *tv_kfont[0x7f]; 70 71 u_char kern_font[256 * FONTHEIGHT]; 72 u_char kbdled; 73 74 #define PHYSLINE(y) ((tv_top + (y)) % PLANELINES) 75 #define ROWOFFSET(y) ((y) * FONTHEIGHT * ROWBYTES) 76 #define CHADDR(y, x) (tv_row[PHYSLINE(y)] + (x)) 77 78 #define SETGLYPH(to,from) bcopy(&kern_font[(to)*16], &kern_font[(from)*16],16) 79 #define KFONTBASE(left) ((left) * FONTHEIGHT * 0x5e - 0x21 * FONTHEIGHT) 80 81 /* prototype */ 82 void tv_init __P((struct ite_softc *)); 83 void tv_deinit __P((struct ite_softc *)); 84 void tv_putc __P((struct ite_softc *, int, int, int, int)); 85 void tv_cursor __P((struct ite_softc *, int)); 86 void tv_clear __P((struct ite_softc *, int, int, int, int)); 87 void tv_scroll __P((struct ite_softc *, int, int, int, int)); 88 89 90 static __inline void 91 txrascpy (src, dst, size, mode) 92 u_char src, dst; 93 short size; 94 signed short mode; 95 { 96 /*int s;*/ 97 u_short saved_r21 = CRTC.r21; 98 char d; 99 100 d = (mode < 0) ? -1 : 1; 101 src *= FONTHEIGHT / 4; 102 dst *= FONTHEIGHT / 4; 103 size *= 4; 104 if (d < 0) { 105 src += (FONTHEIGHT / 4) - 1; 106 dst += (FONTHEIGHT / 4) - 1; 107 } 108 109 /* specify same time write mode & page */ 110 CRTC.r21 = (mode & 0x0f) | 0x0100; 111 /*mfp.ddr = 0;*/ /* port is input */ 112 113 /*s = splhigh();*/ 114 while (--size >= 0) { 115 /* wait for hsync */ 116 while (mfp.gpip & MFP_GPIP_HSYNC) 117 asm("nop"); 118 while (!(mfp.gpip & MFP_GPIP_HSYNC)) 119 asm("nop"); 120 CRTC.r22 = (src << 8) | dst; /* specify raster number */ 121 /* start raster copy */ 122 CRTC.crtctrl = 8; 123 124 src += d; 125 dst += d; 126 } 127 /*splx(s);*/ 128 129 /* wait for hsync */ 130 while (mfp.gpip & MFP_GPIP_HSYNC) 131 asm("nop"); 132 while (!(mfp.gpip & MFP_GPIP_HSYNC)) 133 asm("nop"); 134 /* stop raster copy */ 135 CRTC.crtctrl = 0; 136 137 CRTC.r21 = saved_r21; 138 } 139 140 /* 141 * Initialize 142 */ 143 void 144 tv_init(ip) 145 struct ite_softc *ip; 146 { 147 short i; 148 u_char glyph = IODEVbase->io_sram[0x59]; 149 150 /* 151 * initialize private variables 152 */ 153 tv_top = 0; 154 for (i = 0; i < PLANELINES; i++) 155 tv_row[i] = (void *)&IODEVbase->tvram[ROWOFFSET(i)]; 156 /* shadow ANK font */ 157 bcopy((void *)&IODEVbase->cgrom0_8x16, kern_font, 256 * FONTHEIGHT); 158 /* glyph */ 159 if (glyph & 4) 160 SETGLYPH(0x82, '|'); 161 if (glyph & 2) 162 SETGLYPH(0x81, '~'); 163 if (glyph & 1) 164 SETGLYPH(0x80, '\\'); 165 /* set font address cache */ 166 for (i = 0; i < 256; i++) 167 tv_font[i] = &kern_font[i * FONTHEIGHT]; 168 for (i = 0x21; i < 0x30; i++) 169 tv_kfont[i] = &IODEVbase->cgrom0_16x16[KFONTBASE(i-0x21)]; 170 for (; i < 0x50; i++) 171 tv_kfont[i] = &IODEVbase->cgrom1_16x16[KFONTBASE(i-0x30)]; 172 for (; i < 0x7f; i++) 173 tv_kfont[i] = &IODEVbase->cgrom2_16x16[KFONTBASE(i-0x50)]; 174 175 /* 176 * initialize part of ip 177 */ 178 ip->cols = ip->grf->g_display.gd_dwidth / FONTWIDTH; 179 ip->rows = ip->grf->g_display.gd_dheight / FONTHEIGHT; 180 /* set draw routine dynamically */ 181 ip->isw->ite_putc = tv_putc; 182 ip->isw->ite_cursor = tv_cursor; 183 ip->isw->ite_clear = tv_clear; 184 ip->isw->ite_scroll = tv_scroll; 185 186 /* 187 * Intialize colormap 188 */ 189 #define RED (0x1f << 6) 190 #define BLUE (0x1f << 1) 191 #define GREEN (0x1f << 11) 192 IODEVbase->tpalet[0] = 0; /* black */ 193 IODEVbase->tpalet[1] = 1 | RED; /* red */ 194 IODEVbase->tpalet[2] = 1 | GREEN; /* green */ 195 IODEVbase->tpalet[3] = 1 | RED | GREEN; /* yellow */ 196 IODEVbase->tpalet[4] = 1 | BLUE; /* blue */ 197 IODEVbase->tpalet[5] = 1 | BLUE | RED; /* magenta */ 198 IODEVbase->tpalet[6] = 1 | BLUE | GREEN; /* cyan */ 199 IODEVbase->tpalet[7] = 1 | BLUE | RED | GREEN; /* white */ 200 } 201 202 /* 203 * Deinitialize 204 */ 205 void 206 tv_deinit(ip) 207 struct ite_softc *ip; 208 { 209 ip->flags &= ~ITE_INITED; /* XXX? */ 210 mfp.udr = 0x48; /* send character from keyboard disable */ 211 } 212 213 typedef void tv_putcfunc __P((struct ite_softc *, int, char *)); 214 static tv_putcfunc tv_putc_nm; 215 static tv_putcfunc tv_putc_in; 216 static tv_putcfunc tv_putc_ul; 217 static tv_putcfunc tv_putc_ul_in; 218 static tv_putcfunc tv_putc_bd; 219 static tv_putcfunc tv_putc_bd_in; 220 static tv_putcfunc tv_putc_bd_ul; 221 static tv_putcfunc tv_putc_bd_ul_in; 222 223 static tv_putcfunc *putc_func[ATTR_ALL + 1] = { 224 tv_putc_nm, 225 tv_putc_in, 226 tv_putc_ul, 227 tv_putc_ul_in, 228 tv_putc_bd, 229 tv_putc_bd_in, 230 tv_putc_bd_ul, 231 tv_putc_bd_ul_in, 232 /* no support for blink */ 233 tv_putc_nm, 234 tv_putc_in, 235 tv_putc_ul, 236 tv_putc_ul_in, 237 tv_putc_bd, 238 tv_putc_bd_in, 239 tv_putc_bd_ul, 240 tv_putc_bd_ul_in, 241 }; 242 243 /* 244 * simple put character function 245 */ 246 void 247 tv_putc(ip, ch, y, x, mode) 248 struct ite_softc *ip; 249 int ch, y, x, mode; 250 { 251 char *p = CHADDR(y, x); 252 short fh; 253 254 /* multi page write mode */ 255 CRTC.r21 = 0x0100 | ip->fgcolor << 4; 256 257 /* draw plane */ 258 putc_func[mode](ip, ch, p); 259 260 /* erase plane */ 261 CRTC.r21 ^= 0x00f0; 262 if (ip->save_char) { 263 for (fh = 0; fh < FONTHEIGHT; fh++, p += ROWBYTES) 264 *(u_short *)p = 0; 265 } else { 266 for (fh = 0; fh < FONTHEIGHT; fh++, p += ROWBYTES) 267 *p = 0; 268 } 269 270 /* crtc mode reset */ 271 CRTC.r21 = 0; 272 } 273 274 void 275 tv_putc_nm(ip, ch, p) 276 struct ite_softc *ip; 277 int ch; 278 char *p; 279 { 280 short fh, hi; 281 char *f; 282 short *kf; 283 284 hi = ip->save_char & 0x7f; 285 286 if (hi >= 0x21 && hi <= 0x7e) { 287 /* multibyte character */ 288 kf = (short *)tv_kfont[hi]; 289 kf += (ch & 0x7f) * FONTHEIGHT; 290 /* draw plane */ 291 for (fh = 0; fh < FONTHEIGHT; fh++, p += ROWBYTES) 292 *(u_short *)p = *kf++; 293 return; 294 } 295 296 /* singlebyte character */ 297 if (*ip->GL == CSET_JISKANA) 298 ch |= 0x80; 299 f = tv_font[ch]; 300 301 /* draw plane */ 302 for (fh = 0; fh < FONTHEIGHT; fh++, p += ROWBYTES) 303 *p = *f++; 304 } 305 306 void 307 tv_putc_in(ip, ch, p) 308 struct ite_softc *ip; 309 int ch; 310 char *p; 311 { 312 short fh, hi; 313 char *f; 314 short *kf; 315 316 hi = ip->save_char & 0x7f; 317 318 if (hi >= 0x21 && hi <= 0x7e) { 319 /* multibyte character */ 320 kf = (short *)tv_kfont[hi]; 321 kf += (ch & 0x7f) * FONTHEIGHT; 322 /* draw plane */ 323 for (fh = 0; fh < FONTHEIGHT; fh++, p += ROWBYTES) 324 *(u_short *)p = ~*kf++; 325 return; 326 } 327 328 /* singlebyte character */ 329 if (*ip->GL == CSET_JISKANA) 330 ch |= 0x80; 331 f = tv_font[ch]; 332 333 /* draw plane */ 334 for (fh = 0; fh < FONTHEIGHT; fh++, p += ROWBYTES) 335 *p = ~*f++; 336 } 337 338 void 339 tv_putc_bd(ip, ch, p) 340 struct ite_softc *ip; 341 int ch; 342 char *p; 343 { 344 short fh, hi; 345 char *f; 346 short *kf; 347 348 hi = ip->save_char & 0x7f; 349 350 if (hi >= 0x21 && hi <= 0x7e) { 351 /* multibyte character */ 352 kf = (short *)tv_kfont[hi]; 353 kf += (ch & 0x7f) * FONTHEIGHT; 354 /* draw plane */ 355 for (fh = 0; fh < FONTHEIGHT; fh++, p += ROWBYTES) { 356 ch = *kf++; 357 *(u_short *)p = ch | (ch >> 1); 358 } 359 return; 360 } 361 362 /* singlebyte character */ 363 if (*ip->GL == CSET_JISKANA) 364 ch |= 0x80; 365 f = tv_font[ch]; 366 367 /* draw plane */ 368 for (fh = 0; fh < FONTHEIGHT; fh++, p += ROWBYTES) { 369 ch = *f++; 370 *p = ch | (ch >> 1); 371 } 372 } 373 374 static __inline int 375 expbits (data) 376 int data; 377 { 378 int i, nd = 0; 379 if (data & 1) 380 nd |= 0x02; 381 for (i=1; i < 32; i++) { 382 if (data & (1 << i)) 383 nd |= 0x5 << (i-1); 384 } 385 nd &= ~data; 386 return (~nd); 387 } 388 389 void 390 tv_putc_ul(ip, ch, p) 391 struct ite_softc *ip; 392 int ch; 393 char *p; 394 { 395 short fh, hi; 396 char *f; 397 short *kf; 398 399 hi = ip->save_char & 0x7f; 400 401 if (hi >= 0x21 && hi <= 0x7e) { 402 /* multibyte character */ 403 kf = (short *)tv_kfont[hi]; 404 kf += (ch & 0x7f) * FONTHEIGHT; 405 /* draw plane */ 406 for (fh = 0; fh < UNDERLINE; fh++, p += ROWBYTES) 407 *(u_short *)p = *kf++; 408 *(u_short *)p = expbits(*kf++); 409 p += ROWBYTES; 410 for (fh++; fh < FONTHEIGHT; fh++, p += ROWBYTES) 411 *(u_short *)p = *kf++; 412 return; 413 } 414 415 /* singlebyte character */ 416 if (*ip->GL == CSET_JISKANA) 417 ch |= 0x80; 418 f = tv_font[ch]; 419 420 /* draw plane */ 421 for (fh = 0; fh < UNDERLINE; fh++, p += ROWBYTES) 422 *p = *f++; 423 *p = expbits(*f++); 424 p += ROWBYTES; 425 for (fh++; fh < FONTHEIGHT; fh++, p += ROWBYTES) 426 *p = *f++; 427 } 428 429 void 430 tv_putc_bd_in(ip, ch, p) 431 struct ite_softc *ip; 432 int ch; 433 char *p; 434 { 435 short fh, hi; 436 char *f; 437 short *kf; 438 439 hi = ip->save_char & 0x7f; 440 441 if (hi >= 0x21 && hi <= 0x7e) { 442 /* multibyte character */ 443 kf = (short *)tv_kfont[hi]; 444 kf += (ch & 0x7f) * FONTHEIGHT; 445 /* draw plane */ 446 for (fh = 0; fh < FONTHEIGHT; fh++, p += ROWBYTES) { 447 ch = *kf++; 448 *(u_short *)p = ~(ch | (ch >> 1)); 449 } 450 return; 451 } 452 453 /* singlebyte character */ 454 if (*ip->GL == CSET_JISKANA) 455 ch |= 0x80; 456 f = tv_font[ch]; 457 458 /* draw plane */ 459 for (fh = 0; fh < FONTHEIGHT; fh++, p += ROWBYTES) { 460 ch = *f++; 461 *p = ~(ch | (ch >> 1)); 462 } 463 } 464 465 void 466 tv_putc_ul_in(ip, ch, p) 467 struct ite_softc *ip; 468 int ch; 469 char *p; 470 { 471 short fh, hi; 472 char *f; 473 short *kf; 474 475 hi = ip->save_char & 0x7f; 476 477 if (hi >= 0x21 && hi <= 0x7e) { 478 /* multibyte character */ 479 kf = (short *)tv_kfont[hi]; 480 kf += (ch & 0x7f) * FONTHEIGHT; 481 /* draw plane */ 482 for (fh = 0; fh < UNDERLINE; fh++, p += ROWBYTES) 483 *(u_short *)p = ~*kf++; 484 *(u_short *)p = ~expbits(*kf++); 485 p += ROWBYTES; 486 for (fh++; fh < FONTHEIGHT; fh++, p += ROWBYTES) 487 *(u_short *)p = ~*kf++; 488 return; 489 } 490 491 /* singlebyte character */ 492 if (*ip->GL == CSET_JISKANA) 493 ch |= 0x80; 494 f = tv_font[ch]; 495 496 /* draw plane */ 497 for (fh = 0; fh < UNDERLINE; fh++, p += ROWBYTES) 498 *p = ~*f++; 499 *p = ~expbits(*f++); 500 p += ROWBYTES; 501 for (fh++; fh < FONTHEIGHT; fh++, p += ROWBYTES) 502 *p = ~*f++; 503 } 504 505 void 506 tv_putc_bd_ul(ip, ch, p) 507 struct ite_softc *ip; 508 int ch; 509 char *p; 510 { 511 short fh, hi; 512 char *f; 513 short *kf; 514 515 hi = ip->save_char & 0x7f; 516 517 if (hi >= 0x21 && hi <= 0x7e) { 518 /* multibyte character */ 519 kf = (short *)tv_kfont[hi]; 520 kf += (ch & 0x7f) * FONTHEIGHT; 521 /* draw plane */ 522 for (fh = 0; fh < UNDERLINE; fh++, p += ROWBYTES) { 523 ch = *kf++; 524 *(u_short *)p = ch | (ch >> 1); 525 } 526 ch = *kf++; 527 *(u_short *)p = expbits(ch | (ch >> 1)); 528 p += ROWBYTES; 529 for (fh++; fh < FONTHEIGHT; fh++, p += ROWBYTES) { 530 ch = *kf++; 531 *(u_short *)p = ch | (ch >> 1); 532 } 533 return; 534 } 535 536 /* singlebyte character */ 537 if (*ip->GL == CSET_JISKANA) 538 ch |= 0x80; 539 f = tv_font[ch]; 540 541 /* draw plane */ 542 for (fh = 0; fh < UNDERLINE; fh++, p += ROWBYTES) { 543 ch = *f++; 544 *p = ch | (ch >> 1); 545 } 546 ch = *f++; 547 *p = expbits(ch | (ch >> 1)); 548 p += ROWBYTES; 549 for (fh++; fh < FONTHEIGHT; fh++, p += ROWBYTES) { 550 ch = *f++; 551 *p = ch | (ch >> 1); 552 } 553 } 554 555 void 556 tv_putc_bd_ul_in(ip, ch, p) 557 struct ite_softc *ip; 558 int ch; 559 char *p; 560 { 561 short fh, hi; 562 char *f; 563 short *kf; 564 565 hi = ip->save_char & 0x7f; 566 567 if (hi >= 0x21 && hi <= 0x7e) { 568 /* multibyte character */ 569 kf = (short *)tv_kfont[hi]; 570 kf += (ch & 0x7f) * FONTHEIGHT; 571 /* draw plane */ 572 for (fh = 0; fh < UNDERLINE; fh++, p += ROWBYTES) { 573 ch = *kf++; 574 *(u_short *)p = ~(ch | (ch >> 1)); 575 } 576 ch = *kf++; 577 *(u_short *)p = ~expbits(ch | (ch >> 1)); 578 p += ROWBYTES; 579 for (fh++; fh < FONTHEIGHT; fh++, p += ROWBYTES) { 580 ch = *kf++; 581 *(u_short *)p = ~(ch | (ch >> 1)); 582 } 583 return; 584 } 585 586 /* singlebyte character */ 587 if (*ip->GL == CSET_JISKANA) 588 ch |= 0x80; 589 f = tv_font[ch]; 590 591 /* draw plane */ 592 for (fh = 0; fh < UNDERLINE; fh++, p += ROWBYTES) { 593 ch = *f++; 594 *p = ~(ch | (ch >> 1)); 595 } 596 ch = *f++; 597 *p = ~expbits(ch | (ch >> 1)); 598 p += ROWBYTES; 599 for (fh++; fh < FONTHEIGHT; fh++, p += ROWBYTES) { 600 ch = *f++; 601 ch |= ch >> 1; 602 *p = ~(ch | (ch >> 1)); 603 } 604 } 605 606 /* 607 * draw/erase/move cursor 608 */ 609 void 610 tv_cursor(ip, flag) 611 struct ite_softc *ip; 612 int flag; 613 { 614 u_char *p; 615 short fh; 616 617 /* erase */ 618 switch (flag) { 619 /*case DRAW_CURSOR:*/ 620 /*case ERASE_CURSOR:*/ 621 /*case MOVE_CURSOR:*/ 622 case START_CURSOROPT: 623 /* 624 * old: ip->cursorx, ip->cursory 625 * new: ip->curx, ip->cury 626 */ 627 p = CHADDR(ip->cursory, ip->cursorx); 628 for (fh = 0; fh < FONTHEIGHT; fh++, p += ROWBYTES) 629 *p = ~*p; 630 break; 631 } 632 633 /* draw */ 634 switch (flag) { 635 /*case MOVE_CURSOR:*/ 636 case END_CURSOROPT: 637 /* 638 * Use exclusive-or. 639 */ 640 p = CHADDR(ip->cury, ip->curx); 641 for (fh = 0; fh < FONTHEIGHT; fh++, p += ROWBYTES) 642 *p = ~*p; 643 644 ip->cursorx = ip->curx; 645 ip->cursory = ip->cury; 646 break; 647 } 648 } 649 650 /* 651 * clear rectangle 652 */ 653 void 654 tv_clear(ip, y, x, height, width) 655 struct ite_softc *ip; 656 int y, x, height, width; 657 { 658 char *p; 659 short fh; 660 661 CRTC.r21 = 0x01f0; 662 while (height--) { 663 p = CHADDR(y++, x); 664 for (fh = 0; fh < FONTHEIGHT; fh++, p += ROWBYTES) 665 bzero(p, width); 666 } 667 /* crtc mode reset */ 668 CRTC.r21 = 0; 669 } 670 671 /* 672 * scroll lines/columns 673 */ 674 void 675 tv_scroll(ip, srcy, srcx, count, dir) 676 struct ite_softc *ip; 677 int srcy, srcx, count, dir; 678 { 679 int dst, siz, pl; 680 681 switch (dir) { 682 case SCROLL_UP: 683 /* 684 * src: srcy 685 * dst: (srcy - count) 686 * siz: (ip->bottom_margin - sy + 1) 687 */ 688 dst = srcy - count; 689 siz = ip->bottom_margin - srcy + 1; 690 if (dst == 0 && ip->bottom_margin == ip->rows - 1) { 691 /* special case, hardware scroll */ 692 tv_top = (tv_top + count) % PLANELINES; 693 CRTC.r11 = tv_top * FONTHEIGHT; 694 } else { 695 srcy = PHYSLINE(srcy); 696 dst = PHYSLINE(dst); 697 txrascpy(srcy, dst, siz, 0x0f); 698 } 699 break; 700 701 case SCROLL_DOWN: 702 /* 703 * src: srcy 704 * dst: (srcy + count) 705 * siz: (ip->bottom_margin - dy + 1) 706 */ 707 dst = srcy + count; 708 siz = ip->bottom_margin - dst + 1; 709 if (srcy == 0 && ip->bottom_margin == ip->rows - 1) { 710 /* special case, hardware scroll */ 711 tv_top = (tv_top + PLANELINES - count) % PLANELINES; 712 CRTC.r11 = tv_top * FONTHEIGHT; 713 } else { 714 srcy = PHYSLINE(srcy) + siz - 1; 715 dst = PHYSLINE(dst) + siz - 1; 716 txrascpy(srcy, dst, siz, 0x0f | 0x8000); 717 } 718 break; 719 720 case SCROLL_LEFT: 721 for (pl = 0; pl < PLANESIZE * 4; pl += PLANESIZE) { 722 short fh; 723 char *src = CHADDR(srcy, srcx) + pl; 724 char *dst = CHADDR(srcy, srcx - count) + pl; 725 726 siz = ip->cols - srcx; 727 for (fh = 0; fh < FONTHEIGHT; fh++) { 728 bcopy(src, dst, siz); 729 src += ROWBYTES; 730 dst += ROWBYTES; 731 } 732 } 733 break; 734 735 case SCROLL_RIGHT: 736 for (pl = 0; pl < PLANESIZE * 4; pl += PLANESIZE) { 737 short fh; 738 char *src = CHADDR(srcy, srcx) + pl; 739 char *dst = CHADDR(srcy, srcx + count) + pl; 740 741 siz = ip->cols - (srcx + count); 742 for (fh = 0; fh < FONTHEIGHT; fh++) { 743 bcopy(src, dst, siz); 744 src += ROWBYTES; 745 dst += ROWBYTES; 746 } 747 } 748 break; 749 } 750 } 751
Indexes created Mon Sep 29 13:09:55 GMT 2025