/[gxemul]/trunk/src/devices/dev_bt459.c
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Contents of /trunk/src/devices/dev_bt459.c

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Revision 4 - (show annotations)
Mon Oct 8 16:18:00 2007 UTC (12 years, 3 months ago) by dpavlin
File MIME type: text/plain
File size: 17051 byte(s)
++ trunk/HISTORY	(local)
$Id: HISTORY,v 1.707 2005/04/27 16:37:33 debug Exp $
20050408	Some minor updates to the wdc. Linux now doesn't complain
		anymore if a disk is non-present.
20050409	Various minor fixes (a bintrans bug, and some other things).
		The wdc seems to work with Playstation2 emulation, but there
		is a _long_ annoying delay when disks are detected.
		Fixing a really important bintrans bug (when devices and RAM
		are mixed within 4KB pages), which was triggered with
		NetBSD/playstation2 kernels.
20050410	Adding a dummy dev_ps2_ether (just so that NetBSD doesn't
		complain as much during bootup).
		Symbols starting with '$' are now ignored.
		Renaming dev_ps2_ohci.c to dev_ohci.c, etc.
20050411	Moving the bintrans-cache-isolation check from cpu_mips.c to
		cpu_mips_coproc.c. (I thought this would give a speedup, but
		it's not noticable.)
		Better playstation2 sbus interrupt code.
		Skip ahead many ticks if the count register is read manually.
		(This increases the speed of delay-loops that simply read
		the count register.)
20050412	Updates to the playstation2 timer/interrupt code.
		Some other minor updates.
20050413	NetBSD/cobalt runs from a disk image :-) including userland;
		updating the documentation on how to install NetBSD/cobalt
		using NetBSD/pmax (!).
		Some minor bintrans updates (no real speed improvement) and
		other minor updates (playstation2 now uses the -o options).
20050414	Adding a dummy x86 (and AMD64) mode.
20050415	Adding some (32-bit and 16-bit) x86 instructions.
		Adding some initial support for non-SCSI, non-IDE floppy
		images. (The x86 mode can boot from these, more or less.)
		Moving the devices/ and include/ directories to src/devices/
		and src/include/, respectively.
20050416	Continuing on the x86 stuff. (Adding pc_bios.c and some simple
		support for software interrupts in 16-bit mode.)
20050417	Ripping out most of the x86 instruction decoding stuff, trying
		to rewrite it in a cleaner way.
		Disabling some of the least working CPU families in the
		configure script (sparc, x86, alpha, hppa), so that they are
		not enabled by default.
20050418	Trying to fix the bug which caused problems when turning on
		and off bintrans interactively, by flushing the bintrans cache
		whenever bintrans is manually (re)enabled.
20050419	Adding the 'lswi' ppc instruction.
		Minor updates to the x86 instruction decoding.
20050420	Renaming x86 register name indices from R_xx to X86_R_xx (this
		makes building on Tru64 nicer).
20050422	Adding a check for duplicate MIPS TLB entries on tlbwr/tlbwi.
20050427	Adding screenshots to guestoses.html.
		Some minor fixes and testing for the next release.

==============  RELEASE 0.3.2  ==============


1 /*
2 * Copyright (C) 2003-2005 Anders Gavare. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are met:
6 *
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 * 3. The name of the author may not be used to endorse or promote products
13 * derived from this software without specific prior written permission.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 *
27 *
28 * $Id: dev_bt459.c,v 1.59 2005/02/22 12:15:29 debug Exp $
29 *
30 * Brooktree 459 vdac, used by TURBOchannel graphics cards.
31 */
32
33 #include <stdio.h>
34 #include <stdlib.h>
35 #include <string.h>
36
37 #include "cpu.h"
38 #include "devices.h"
39 #include "machine.h"
40 #include "memory.h"
41 #include "misc.h"
42 #include "x11.h"
43
44 #include "bt459.h"
45
46
47 #ifdef WITH_X11
48 #include <X11/Xlib.h>
49 #include <X11/Xutil.h>
50 #endif
51
52 extern int quiet_mode;
53
54
55 /* #define BT459_DEBUG */
56 /* #define WITH_CURSOR_DEBUG */
57 #define BT459_TICK_SHIFT 14
58
59 struct bt459_data {
60 uint32_t bt459_reg[DEV_BT459_NREGS];
61
62 unsigned char cur_addr_hi;
63 unsigned char cur_addr_lo;
64
65 int planes;
66 int type;
67
68 int irq_nr;
69 int interrupts_enable;
70 int interrupt_time;
71 int interrupt_time_reset_value;
72
73 int cursor_x_add;
74 int cursor_y_add;
75
76 int need_to_redraw_whole_screen;
77
78 int need_to_update_cursor_shape;
79 int cursor_on;
80 int cursor_x;
81 int cursor_y;
82 int cursor_xsize;
83 int cursor_ysize;
84
85 int palette_sub_offset; /* 0, 1, or 2 */
86
87 struct vfb_data *vfb_data;
88
89 /*
90 * There is one pointer to the framebuffer's RGB palette,
91 * and then a local copy of the palette. 256 * 3 bytes (r,g,b).
92 * The reason for this is that when we need to blank the screen
93 * (ie video_on = 0), we can set the framebuffer's palette to all
94 * zeroes, but keep our own copy intact, to be reused later again
95 * when the screen is unblanked.
96 */
97 int video_on;
98 unsigned char *rgb_palette; /* 256 * 3 (r,g,b) */
99 unsigned char local_rgb_palette[256 * 3];
100 };
101
102
103 /*
104 * bt459_state():
105 */
106 int bt459_state(struct cpu *cpu, struct memory *mem, void *extra, int wf,
107 int nr, int *type, char **namep, void **data, size_t *len)
108 {
109 struct bt459_data *d = (struct bt459_data *) extra;
110
111 switch (nr) {
112 case 0: if (wf) {
113 memcpy(&d->cursor_on, *data, *len);
114 } else {
115 (*namep) = "cursor_on";
116 (*type) = DEVICE_STATE_TYPE_INT;
117 *len = sizeof(d->cursor_on);
118 *data = &d->cursor_on;
119 }
120 break;
121 case 1: if (wf) {
122 memcpy(&d->cursor_x, *data, *len);
123 } else {
124 (*namep) = "cursor_x";
125 (*type) = DEVICE_STATE_TYPE_INT;
126 *len = sizeof(d->cursor_x);
127 *data = &d->cursor_x;
128 }
129 break;
130 case 2: if (wf) {
131 memcpy(&d->cursor_y, *data, *len);
132 } else {
133 (*namep) = "cursor_y";
134 (*type) = DEVICE_STATE_TYPE_INT;
135 *len = sizeof(d->cursor_y);
136 *data = &d->cursor_y;
137 }
138 break;
139 case 3: if (wf) {
140 memcpy(&d->cursor_xsize, *data, *len);
141 } else {
142 (*namep) = "cursor_xsize";
143 (*type) = DEVICE_STATE_TYPE_INT;
144 *len = sizeof(d->cursor_xsize);
145 *data = &d->cursor_xsize;
146 }
147 break;
148 case 4: if (wf) {
149 memcpy(&d->cursor_ysize, *data, *len);
150 } else {
151 (*namep) = "cursor_ysize";
152 (*type) = DEVICE_STATE_TYPE_INT;
153 *len = sizeof(d->cursor_ysize);
154 *data = &d->cursor_ysize;
155 }
156 break;
157 default:
158 return 0;
159 }
160
161 return 1;
162 }
163
164
165 /*
166 * bt459_update_X_cursor():
167 *
168 * This routine takes the color values in the cursor RAM area, and put them
169 * in the framebuffer window's cursor_pixels.
170 *
171 * d->cursor_xsize and ysize are also updated.
172 */
173 static void bt459_update_X_cursor(struct cpu *cpu, struct bt459_data *d)
174 {
175 int i, x,y, xmax=0, ymax=0;
176 int bw_only = 1;
177
178 /* First, let's calculate the size of the cursor: */
179 for (y=0; y<64; y++)
180 for (x=0; x<64; x+=4) {
181 int reg = BT459_REG_CRAM_BASE + y*16 + x/4;
182 unsigned char data = d->bt459_reg[reg];
183
184 if (data)
185 ymax = y;
186
187 for (i=0; i<4; i++) {
188 int color = (data >> (6-2*i)) & 3;
189 if (color != 0)
190 xmax = x + i;
191 if (color != 0 && color != 3)
192 bw_only = 0;
193 }
194 }
195
196 d->cursor_xsize = xmax + 1;
197 d->cursor_ysize = ymax + 1;
198
199 /*
200 * The 'bw_only' hack is because it is nicer to have the b/w
201 * text cursor invert whatever it is standing on, not just overwrite
202 * it with a big white box.
203 *
204 * The following seems to work with NetBSD/OpenBSD/Ultrix/Sprite:
205 * 0 = transparent, 1 and 2 = use the color specified by
206 * BT459_REG_CCOLOR_2, 3 = reverse of color 1/2.
207 */
208
209 #ifdef WITH_X11
210 if (cpu->machine->use_x11 && d->vfb_data->fb_window != NULL) {
211 for (y=0; y<=ymax; y++) {
212 for (x=0; x<=xmax; x+=4) {
213 struct fb_window *win = d->vfb_data->fb_window;
214 int reg = BT459_REG_CRAM_BASE + y*16 + x/4;
215 unsigned char data = d->bt459_reg[reg];
216
217 for (i=0; i<4; i++) {
218 int color = (data >> (6-2*i)) & 3;
219 int pixelvalue;
220
221 if (bw_only) {
222 if (color)
223 pixelvalue =
224 CURSOR_COLOR_INVERT;
225 else
226 pixelvalue = 0;
227 } else {
228 pixelvalue =
229 CURSOR_COLOR_TRANSPARENT;
230 switch (color) {
231 case 1:
232 case 2: pixelvalue = (d->
233 bt459_reg[
234 BT459_REG_CCOLOR_2]
235 >> 4) & 0xf;
236 break;
237 case 3: pixelvalue = 15 -
238 ((d->bt459_reg[
239 BT459_REG_CCOLOR_2]
240 >> 4) & 0xf);
241 break;
242 }
243 }
244
245 win->cursor_pixels[y][x+i] =
246 pixelvalue;
247 #ifdef WITH_CURSOR_DEBUG
248 printf("%i", color);
249 #endif
250 }
251 }
252 #ifdef WITH_CURSOR_DEBUG
253 printf("\n");
254 #endif
255 }
256 #ifdef WITH_CURSOR_DEBUG
257 printf("color 1,2,3 = 0x%02x, 0x%02x, 0x%02x\n",
258 d->bt459_reg[BT459_REG_CCOLOR_1],
259 d->bt459_reg[BT459_REG_CCOLOR_2],
260 d->bt459_reg[BT459_REG_CCOLOR_3]);
261 printf("\n");
262 #endif
263 /*
264 * Make sure the cursor is redrawn, if it is on:
265 *
266 * How does this work? Well, 0 is off, and non-zero is on,
267 * but if the old and new differ, the cursor is redrawn.
268 * (Hopefully this will "never" overflow.)
269 */
270 if (d->cursor_on)
271 d->cursor_on ++;
272 }
273 #endif
274 }
275
276
277 /*
278 * bt459_update_cursor_position():
279 */
280 static void bt459_update_cursor_position(struct bt459_data *d,
281 int old_cursor_on)
282 {
283 int new_cursor_x = (d->bt459_reg[BT459_REG_CXLO] & 255) +
284 ((d->bt459_reg[BT459_REG_CXHI] & 255) << 8) - d->cursor_x_add;
285 int new_cursor_y = (d->bt459_reg[BT459_REG_CYLO] & 255) +
286 ((d->bt459_reg[BT459_REG_CYHI] & 255) << 8) - d->cursor_y_add;
287
288 if (new_cursor_x != d->cursor_x || new_cursor_y != d->cursor_y ||
289 d->cursor_on != old_cursor_on) {
290 int on;
291
292 d->cursor_x = new_cursor_x;
293 d->cursor_y = new_cursor_y;
294
295 if (!quiet_mode)
296 debug("[ bt459: cursor = %03i,%03i ]\n",
297 d->cursor_x, d->cursor_y);
298
299 on = d->cursor_on;
300 if (d->cursor_xsize == 0 || d->cursor_ysize == 0)
301 on = 0;
302
303 dev_fb_setcursor(d->vfb_data, d->cursor_x, d->cursor_y,
304 on, d->cursor_xsize, d->cursor_ysize);
305 }
306 }
307
308
309 /*
310 * dev_bt459_tick():
311 */
312 void dev_bt459_tick(struct cpu *cpu, void *extra)
313 {
314 struct bt459_data *d = extra;
315 int old_cursor_on = d->cursor_on;
316
317 if (d->need_to_update_cursor_shape) {
318 d->need_to_update_cursor_shape = 0;
319 bt459_update_X_cursor(cpu, d);
320 bt459_update_cursor_position(d, old_cursor_on);
321 }
322
323 if (d->need_to_redraw_whole_screen) {
324 d->vfb_data->update_x1 = 0;
325 d->vfb_data->update_x2 = d->vfb_data->xsize - 1;
326 d->vfb_data->update_y1 = 0;
327 d->vfb_data->update_y2 = d->vfb_data->ysize - 1;
328 d->need_to_redraw_whole_screen = 0;
329 }
330
331 /*
332 * Vertical retrace interrupts. (This hack is kind of ugly.)
333 * Once every 'interrupt_time_reset_value', the interrupt is
334 * asserted. It is acked either manually (by someone reading
335 * a normal BT459 register or the Interrupt ack register),
336 * or after another tick has passed. (This is to prevent
337 * lockups from unhandled interrupts.)
338 */
339 if (d->type != BT459_PX && d->interrupts_enable && d->irq_nr > 0) {
340 d->interrupt_time --;
341 if (d->interrupt_time < 0) {
342 d->interrupt_time = d->interrupt_time_reset_value;
343 cpu_interrupt(cpu, d->irq_nr);
344 } else
345 cpu_interrupt_ack(cpu, d->irq_nr);
346 }
347 }
348
349
350 /*
351 * dev_bt459_irq_access():
352 */
353 int dev_bt459_irq_access(struct cpu *cpu, struct memory *mem,
354 uint64_t relative_addr, unsigned char *data, size_t len,
355 int writeflag, void *extra)
356 {
357 struct bt459_data *d = (struct bt459_data *) extra;
358 uint64_t idata = 0, odata = 0;
359
360 idata = memory_readmax64(cpu, data, len);
361
362 #ifdef BT459_DEBUG
363 fatal("[ bt459: IRQ ack ]\n");
364 #endif
365
366 d->interrupts_enable = 1;
367 if (d->irq_nr > 0)
368 cpu_interrupt_ack(cpu, d->irq_nr);
369
370 if (writeflag == MEM_READ)
371 memory_writemax64(cpu, data, len, odata);
372
373 return 1;
374 }
375
376
377 /*
378 * dev_bt459_access():
379 */
380 int dev_bt459_access(struct cpu *cpu, struct memory *mem,
381 uint64_t relative_addr, unsigned char *data, size_t len,
382 int writeflag, void *extra)
383 {
384 struct bt459_data *d = (struct bt459_data *) extra;
385 uint64_t idata = 0, odata = 0;
386 int btaddr, old_cursor_on = d->cursor_on, modified;
387
388 idata = memory_readmax64(cpu, data, len);
389
390 #ifdef BT459_DEBUG
391 if (writeflag == MEM_WRITE)
392 fatal("[ bt459: write to addr 0x%02x: %08x ]\n",
393 (int)relative_addr, (int)idata);
394 #endif
395
396 /*
397 * Vertical retrace interrupts are acked either by
398 * accessing a normal BT459 register, or the irq register,
399 * or by simply "missing" it.
400 */
401 if (d->irq_nr > 0)
402 cpu_interrupt_ack(cpu, d->irq_nr);
403
404 /* ID register is read-only, should always be 0x4a or 0x4a4a4a: */
405 if (d->planes == 24)
406 d->bt459_reg[BT459_REG_ID] = 0x4a4a4a;
407 else {
408 /*
409 * TODO: Is it really 0x4a, or 0x4a0000?
410 * Ultrix panics with a "bad VDAC ID" message if 0x4a
411 * is returned.
412 */
413 d->bt459_reg[BT459_REG_ID] = 0x4a0000;
414 }
415
416 btaddr = ((d->cur_addr_hi << 8) + d->cur_addr_lo) % DEV_BT459_NREGS;
417
418 /* Read from/write to the bt459: */
419 switch (relative_addr) {
420 case 0x00: /* Low byte of address: */
421 if (writeflag == MEM_WRITE) {
422 if (!quiet_mode)
423 debug("[ bt459: write to Low Address Byte, "
424 "0x%02x ]\n", (int)idata);
425 d->cur_addr_lo = idata;
426 d->palette_sub_offset = 0;
427 } else {
428 odata = d->cur_addr_lo;
429 if (!quiet_mode)
430 debug("[ bt459: read from Low Address Byte: "
431 "0x%0x ]\n", (int)odata);
432 }
433 break;
434 case 0x04: /* High byte of address: */
435 if (writeflag == MEM_WRITE) {
436 if (!quiet_mode)
437 debug("[ bt459: write to High Address Byte, "
438 "0x%02x ]\n", (int)idata);
439 d->cur_addr_hi = idata;
440 d->palette_sub_offset = 0;
441 } else {
442 odata = d->cur_addr_hi;
443 if (!quiet_mode)
444 debug("[ bt459: read from High Address Byte: "
445 "0x%0x ]\n", (int)odata);
446 }
447 break;
448 case 0x08: /* Register access: */
449 if (writeflag == MEM_WRITE) {
450 if (!quiet_mode)
451 debug("[ bt459: write to BT459 register "
452 "0x%04x, value 0x%02x ]\n", btaddr,
453 (int)idata);
454 modified = (d->bt459_reg[btaddr] != idata);
455 d->bt459_reg[btaddr] = idata;
456
457 switch (btaddr) {
458 case BT459_REG_CCOLOR_1:
459 case BT459_REG_CCOLOR_2:
460 case BT459_REG_CCOLOR_3:
461 if (modified)
462 d->need_to_update_cursor_shape = 1;
463 break;
464 case BT459_REG_PRM:
465 /*
466 * NetBSD writes 0x00 to this register to
467 * blank the screen (video off), and 0xff
468 * to turn the screen on.
469 */
470 switch (idata & 0xff) {
471 case 0: d->video_on = 0;
472 memset(d->rgb_palette, 0, 256*3);
473 d->need_to_redraw_whole_screen = 1;
474 debug("[ bt459: video OFF ]\n");
475 break;
476 default:d->video_on = 1;
477 memcpy(d->rgb_palette,
478 d->local_rgb_palette, 256*3);
479 d->need_to_redraw_whole_screen = 1;
480 debug("[ bt459: video ON ]\n");
481 }
482 break;
483 case BT459_REG_CCR:
484 /* Cursor control register: */
485 switch (idata & 0xff) {
486 case 0x00: d->cursor_on = 0; break;
487 case 0xc0:
488 case 0xc1: d->cursor_on = 1; break;
489 default:
490 fatal("[ bt459: unimplemented CCR "
491 "value 0x%08x ]\n", (int)idata);
492 }
493 if (modified)
494 d->need_to_update_cursor_shape = 1;
495 break;
496 default:
497 if (btaddr < 0x100)
498 fatal("[ bt459: write to BT459 "
499 "register 0x%04x, value 0x%02x ]\n",
500 btaddr, (int)idata);
501 }
502
503 /* Write to cursor bitmap: */
504 if (btaddr >= BT459_REG_CRAM_BASE && modified)
505 d->need_to_update_cursor_shape = 1;
506 } else {
507 odata = d->bt459_reg[btaddr];
508
509 /* Perhaps this hack is not necessary: */
510 if (btaddr == BT459_REG_ID && len==1)
511 odata = (odata >> 16) & 255;
512
513 if (!quiet_mode)
514 debug("[ bt459: read from BT459 register "
515 "0x%04x, value 0x%02x ]\n", btaddr,
516 (int)odata);
517 }
518
519 /* Go to next register: */
520 d->cur_addr_lo ++;
521 if (d->cur_addr_lo == 0)
522 d->cur_addr_hi ++;
523 break;
524 case 0xc: /* Color map: */
525 if (writeflag == MEM_WRITE) {
526 idata &= 255;
527 if (!quiet_mode)
528 debug("[ bt459: write to BT459 colormap "
529 "0x%04x subaddr %i, value 0x%02x ]\n",
530 btaddr, d->palette_sub_offset, (int)idata);
531
532 if (btaddr < 0x100) {
533 if (d->video_on &&
534 d->local_rgb_palette[(btaddr & 0xff) * 3
535 + d->palette_sub_offset] != idata)
536 d->need_to_redraw_whole_screen = 1;
537
538 /*
539 * Actually, the palette should only be
540 * updated after the third write,
541 * but this should probably work fine too:
542 */
543 d->local_rgb_palette[(btaddr & 0xff) * 3
544 + d->palette_sub_offset] = idata;
545
546 if (d->video_on)
547 d->rgb_palette[(btaddr & 0xff) * 3
548 + d->palette_sub_offset] = idata;
549 }
550 } else {
551 if (btaddr < 0x100)
552 odata = d->local_rgb_palette[(btaddr & 0xff)
553 * 3 + d->palette_sub_offset];
554 if (!quiet_mode)
555 debug("[ bt459: read from BT459 colormap "
556 "0x%04x subaddr %i, value 0x%02x ]\n",
557 btaddr, d->palette_sub_offset, (int)odata);
558 }
559
560 d->palette_sub_offset ++;
561 if (d->palette_sub_offset >= 3) {
562 d->palette_sub_offset = 0;
563
564 d->cur_addr_lo ++;
565 if (d->cur_addr_lo == 0)
566 d->cur_addr_hi ++;
567 }
568
569 break;
570 default:
571 if (writeflag == MEM_WRITE) {
572 debug("[ bt459: unimplemented write to address 0x%x, "
573 "data=0x%02x ]\n", (int)relative_addr, (int)idata);
574 } else {
575 debug("[ bt459: unimplemented read from address "
576 "0x%x ]\n", (int)relative_addr);
577 }
578 }
579
580
581 bt459_update_cursor_position(d, old_cursor_on);
582
583 if (writeflag == MEM_READ)
584 memory_writemax64(cpu, data, len, odata);
585
586 #ifdef BT459_DEBUG
587 if (writeflag == MEM_READ)
588 fatal("[ bt459: read from addr 0x%02x: %08x ]\n",
589 (int)relative_addr, (int)idata);
590 #endif
591
592 return 1;
593 }
594
595
596 /*
597 * dev_bt459_init():
598 */
599 void dev_bt459_init(struct machine *machine, struct memory *mem,
600 uint64_t baseaddr, uint64_t baseaddr_irq, struct vfb_data *vfb_data,
601 int planes, int irq_nr, int type)
602 {
603 struct bt459_data *d = malloc(sizeof(struct bt459_data));
604 if (d == NULL) {
605 fprintf(stderr, "out of memory\n");
606 exit(1);
607 }
608
609 memset(d, 0, sizeof(struct bt459_data));
610
611 d->vfb_data = vfb_data;
612 d->rgb_palette = vfb_data->rgb_palette;
613 d->planes = planes;
614 d->irq_nr = irq_nr;
615 d->type = type;
616 d->cursor_x = -1;
617 d->cursor_y = -1;
618 d->cursor_xsize = d->cursor_ysize = 0; /* anything */
619 d->video_on = 1;
620
621 /*
622 * These offsets are based on those mentioned in NetBSD,
623 * and then adjusted to look good with both NetBSD and
624 * Ultrix:
625 */
626 switch (d->type) {
627 case BT459_PX:
628 d->cursor_x_add = 370;
629 d->cursor_y_add = 37;
630 break;
631 case BT459_BA:
632 d->cursor_x_add = 220;
633 d->cursor_y_add = 35;
634 break;
635 case BT459_BBA:
636 if (vfb_data->xsize == 1280) {
637 /* 1280x1024: */
638 d->cursor_x_add = 368;
639 d->cursor_y_add = 38;
640 } else {
641 /* 1024x864: */
642 d->cursor_x_add = 220;
643 d->cursor_y_add = 35;
644 }
645 break;
646 }
647
648 d->interrupt_time_reset_value = 500;
649
650 memory_device_register(mem, "bt459", baseaddr, DEV_BT459_LENGTH,
651 dev_bt459_access, (void *)d, MEM_DEFAULT, NULL);
652
653 if (baseaddr_irq != 0)
654 memory_device_register(mem, "bt459_irq", baseaddr_irq, 0x10000,
655 dev_bt459_irq_access, (void *)d, MEM_DEFAULT, NULL);
656
657 machine_add_tickfunction(machine, dev_bt459_tick, d, BT459_TICK_SHIFT);
658
659 memory_device_register_statefunction(mem, d, bt459_state);
660 }
661

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