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URL https://opencores.org/ocsvn/eco32/eco32/trunk

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[/] [eco32/] [trunk/] [sim/] [dspkbd.c] - Blame information for rev 231

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Line No. Rev Author Line
1 8 hellwig 
/*
2 25 hellwig 
 * dspkbd.h -- display & keyboard controller simulation
3 8 hellwig 
 */
4 
 
5 
 
6 
#include <stdio.h>
7 
#include <stdlib.h>
8 
#include <string.h>
9 
#include <setjmp.h>
10 
 
11 
#include "common.h"
12 
#include "console.h"
13 
#include "error.h"
14 
#include "except.h"
15 
#include "cpu.h"
16 
#include "timer.h"
17 
#include "dspkbd.h"
18 
 
19 
 
20 
static Bool debug = false;
21 
static Bool debugKeycode = false;
22 
static volatile Bool installed = false;
23 
 
24 
 
25 
static void blinkScreen(void);
26 
 
27 
static void keyPressed(unsigned int xKeycode);
28 
static void keyReleased(unsigned int xKeycode);
29 
 
30 
 
31 
/**************************************************************/
32 
/**************************************************************/
33 
 
34 
/* common definitions, global variables */
35 
 
36 
 
37 
#include <pthread.h>
38 
#include <unistd.h>
39 
#include <time.h>
40 
#include <X11/Xlib.h>
41 
#include <X11/Xutil.h>
42 
#include <X11/Xatom.h>
43 
 
44 
 
45 
#define WINDOW_SIZE_X           640
46 
#define WINDOW_SIZE_Y           480
47 
#define WINDOW_POS_X            100
48 
#define WINDOW_POS_Y            100
49 
 
50 
 
51 
#define C2B(c,ch)               (((((c) & 0xFF) * ch.scale) >> 8) * ch.factor)
52 
#define RGB2PIXEL(r,g,b)        (C2B(r, vga.red) | \
53 
                                 C2B(g, vga.green) | \
54 
                                 C2B(b, vga.blue))
55 
 
56 
 
57 
typedef struct {
58 
  unsigned long scale;
59 
  unsigned long factor;
60 
} ColorChannel;
61 
 
62 
 
63 
typedef struct {
64 
  int argc;
65 
  char **argv;
66 
  Display *display;
67 
  Window win;
68 
  GC gc;
69 
  XImage *image;
70 
  ColorChannel red, green, blue;
71 
  XExposeEvent expose;
72 
  XClientMessageEvent shutdown;
73 
} VGA;
74 
 
75 
 
76 
static VGA vga;
77 
 
78 
 
79 
/**************************************************************/
80 
 
81 
/* monitor server */
82 
 
83 
 
84 
static ColorChannel mask2channel(unsigned long mask) {
85 
  unsigned long f;
86 
  ColorChannel ch;
87 
 
88 
  if (mask == 0) {
89 
    error("color mask is 0 in mask2channel");
90 
  }
91 
  for (f = 1; (mask & 1) == 0; f <<= 1) {
92 
    mask >>= 1;
93 
  }
94 
  ch.factor = f;
95 
  ch.scale = mask + 1;
96 
  while ((mask & 1) != 0) {
97 
    mask >>= 1;
98 
  }
99 
  if (mask != 0) {
100 
    error("scattered color mask bits in mask2channel");
101 
  }
102 
  return ch;
103 
}
104 
 
105 
 
106 
static void initMonitor(int argc, char *argv[]) {
107 
  int screenNum;
108 
  Window rootWin;
109 
  XVisualInfo visualTemp;
110 
  XVisualInfo *visualInfo;
111 
  int visualCount;
112 
  int bestMatch;
113 
  int bestDepth;
114 
  Visual *visual;
115 
  int i;
116 
  unsigned long pixel;
117 
  int x, y;
118 
  Colormap colormap;
119 
  XSetWindowAttributes attrib;
120 
  XSizeHints *sizeHints;
121 
  XWMHints *wmHints;
122 
  XClassHint *classHints;
123 
  XTextProperty windowName;
124 
  XGCValues gcValues;
125 
 
126 
  /* connect to X server */
127 
  if (XInitThreads() == 0) {
128 
    error("no thread support for X11");
129 
  }
130 
  vga.display = XOpenDisplay(NULL);
131 
  if (vga.display == NULL) {
132 
    error("cannot connect to X server");
133 
  }
134 
  screenNum = DefaultScreen(vga.display);
135 
  rootWin = RootWindow(vga.display, screenNum);
136 
  /* find TrueColor visual */
137 
  visualTemp.screen = screenNum;
138 
  visualTemp.class = TrueColor;
139 
  visualInfo = XGetVisualInfo(vga.display,
140 
                              VisualClassMask | VisualScreenMask,
141 
                              &visualTemp, &visualCount);
142 
  if (visualInfo == NULL || visualCount == 0) {
143 
    error("no TrueColor visual found");
144 
  }
145 
  bestMatch = 0;
146 
  bestDepth = visualInfo[0].depth;
147 
  visual = visualInfo[0].visual;
148 
  for (i = 1; i < visualCount; i++) {
149 
    if (visualInfo[i].depth > bestDepth) {
150 
      bestMatch = i;
151 
      bestDepth = visualInfo[i].depth;
152 
      visual = visualInfo[i].visual;
153 
    }
154 
  }
155 
  /* build color channels */
156 
  vga.red = mask2channel(visualInfo[bestMatch].red_mask);
157 
  vga.green = mask2channel(visualInfo[bestMatch].green_mask);
158 
  vga.blue = mask2channel(visualInfo[bestMatch].blue_mask);
159 
  /* create and initialize image */
160 
  vga.image = XCreateImage(vga.display, visual, bestDepth, ZPixmap,
161 
                           0, NULL, WINDOW_SIZE_X, WINDOW_SIZE_Y, 32, 0);
162 
  if (vga.image == NULL) {
163 
    error("cannot allocate image");
164 
  }
165 
  vga.image->data = malloc(vga.image->height * vga.image->bytes_per_line);
166 
  if (vga.image->data == NULL) {
167 
    error("cannot allocate image memory");
168 
  }
169 
  pixel = RGB2PIXEL(0, 0, 0);
170 
  for (y = 0; y < WINDOW_SIZE_Y; y++) {
171 
    for (x = 0; x < WINDOW_SIZE_X; x++) {
172 
      XPutPixel(vga.image, x, y, pixel);
173 
    }
174 
  }
175 
  /* allocate a colormap */
176 
  colormap = XCreateColormap(vga.display, rootWin, visual, AllocNone);
177 
  /* create the window */
178 
  attrib.colormap = colormap;
179 
  attrib.event_mask = ExposureMask | KeyPressMask | KeyReleaseMask;
180 
  attrib.background_pixel = RGB2PIXEL(0, 0, 0);
181 
  attrib.border_pixel = RGB2PIXEL(0, 0, 0);
182 
  vga.win =
183 
    XCreateWindow(vga.display, rootWin,
184 
                  WINDOW_POS_X, WINDOW_POS_Y,
185 
                  WINDOW_SIZE_X, WINDOW_SIZE_Y,
186 
                  0, bestDepth, InputOutput, visual,
187 
                  CWEventMask | CWColormap | CWBackPixel | CWBorderPixel,
188 
                  &attrib);
189 
  /* give hints to window manager */
190 
  sizeHints = XAllocSizeHints();
191 
  wmHints = XAllocWMHints();
192 
  classHints = XAllocClassHint();
193 
  if (sizeHints == NULL ||
194 
      wmHints == NULL ||
195 
      classHints == NULL) {
196 
    error("hint allocation failed");
197 
  }
198 
  sizeHints->flags = PMinSize | PMaxSize;
199 
  sizeHints->min_width = WINDOW_SIZE_X;
200 
  sizeHints->min_height = WINDOW_SIZE_Y;
201 
  sizeHints->max_width = WINDOW_SIZE_X;
202 
  sizeHints->max_height = WINDOW_SIZE_Y;
203 
  wmHints->flags = StateHint | InputHint;
204 
  wmHints->input = True;
205 
  wmHints->initial_state = NormalState;
206 159 hellwig 
  classHints->res_name = "ECO32 Console";
207 8 hellwig 
  classHints->res_class = "ECO32";
208 
  if (XStringListToTextProperty(&classHints->res_name, 1, &windowName) == 0) {
209 
    error("property allocation failed");
210 
  }
211 
  XSetWMProperties(vga.display, vga.win, &windowName, NULL,
212 
                   argv, argc, sizeHints, wmHints, classHints);
213 
  /* create a GC */
214 
  vga.gc = XCreateGC(vga.display, vga.win, 0, &gcValues);
215 
  /* finally get the window displayed */
216 
  XMapWindow(vga.display, vga.win);
217 
  /* prepare expose event */
218 
  vga.expose.type = Expose;
219 
  vga.expose.display = vga.display;
220 
  vga.expose.window = vga.win;
221 
  vga.expose.x = 0;
222 
  vga.expose.y = 0;
223 
  vga.expose.width = WINDOW_SIZE_X;
224 
  vga.expose.height = WINDOW_SIZE_Y;
225 
  vga.expose.count = 0;
226 
  /* prepare shutdown event */
227 
  vga.shutdown.type = ClientMessage;
228 
  vga.shutdown.display = vga.display;
229 
  vga.shutdown.window = vga.win;
230 
  vga.shutdown.message_type = XA_WM_COMMAND;
231 
  vga.shutdown.format = 32;
232 
  vga.shutdown.data.l[0] = 0xDEADBEEF;
233 
  /* say that the graphics controller is installed */
234 
  XSync(vga.display, False);
235 
  installed = true;
236 
}
237 
 
238 
 
239 
static void exitMonitor(void) {
240 
  XFreeGC(vga.display, vga.gc);
241 
  XUnmapWindow(vga.display, vga.win);
242 
  XDestroyWindow(vga.display, vga.win);
243 
  XDestroyImage(vga.image);
244 
  XCloseDisplay(vga.display);
245 
  installed = false;
246 
}
247 
 
248 
 
249 
static int ioErrorHandler(Display *display) {
250 
  error("connection to monitor window lost");
251 
  /* never reached */
252 
  return 0;
253 
}
254 
 
255 
 
256 
static void *server(void *ignore) {
257 
  Bool run;
258 
  XEvent event;
259 
 
260 
  initMonitor(vga.argc, vga.argv);
261 
  XSetIOErrorHandler(ioErrorHandler);
262 
  run = true;
263 
  while (run) {
264 
    XNextEvent(vga.display, &event);
265 
    switch (event.type) {
266 
      case Expose:
267 
        blinkScreen();
268 
        XPutImage(vga.display, vga.win, vga.gc, vga.image,
269 
                  event.xexpose.x, event.xexpose.y,
270 
                  event.xexpose.x, event.xexpose.y,
271 
                  event.xexpose.width, event.xexpose.height);
272 
        break;
273 
      case ClientMessage:
274 
        if (event.xclient.message_type == XA_WM_COMMAND &&
275 
            event.xclient.format == 32 &&
276 
            event.xclient.data.l[0] == 0xDEADBEEF) {
277 
          run = false;
278 
        }
279 
        break;
280 
      case KeyPress:
281 
        keyPressed(event.xkey.keycode);
282 
        break;
283 
      case KeyRelease:
284 
        keyReleased(event.xkey.keycode);
285 
        break;
286 
      default:
287 
        break;
288 
    }
289 
  }
290 
  exitMonitor();
291 
  return NULL;
292 
}
293 
 
294 
 
295 
/**************************************************************/
296 
 
297 
/* refresh timer */
298 
 
299 
 
300 
static Bool refreshRunning = false;
301 
static Bool blink = false;
302 
 
303 
 
304 
static void *refresh(void *ignore) {
305 
  static int blinkCounter = 0;
306 
  struct timespec delay;
307 
 
308 
  while (refreshRunning) {
309 
    if (++blinkCounter == 5) {
310 
      blinkCounter = 0;
311 
      blink = !blink;
312 
    }
313 
    XSendEvent(vga.display, vga.win, False, 0, (XEvent *) &vga.expose);
314 
    XFlush(vga.display);
315 
    delay.tv_sec = 0;
316 
    delay.tv_nsec = 100 * 1000 * 1000;
317 
    nanosleep(&delay, &delay);
318 
  }
319 
  return NULL;
320 
}
321 
 
322 
 
323 
/**************************************************************/
324 
 
325 
/* server interface */
326 
 
327 
 
328 
static int myArgc = 1;
329 
static char *myArgv[] = {
330 
  "eco32",
331 
  NULL
332 
};
333 
 
334 
 
335 
static void vgaInit(void) {
336 
  pthread_attr_t attr;
337 
  pthread_t thread;
338 
 
339 
  /* start monitor server in a separate thread */
340 
  vga.argc = myArgc;
341 
  vga.argv = myArgv;
342 
  pthread_attr_init(&attr);
343 
  pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
344 
  if (pthread_create(&thread, &attr, server, NULL) != 0) {
345 
    error("cannot start monitor server");
346 
  }
347 
  while (!installed) sleep(1);
348 
  /* start refresh timer in another thread */
349 
  refreshRunning = true;
350 
  pthread_attr_init(&attr);
351 
  pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
352 
  if (pthread_create(&thread, &attr, refresh, NULL) != 0) {
353 
    error("cannot start refresh timer");
354 
  }
355 
}
356 
 
357 
 
358 
static void vgaExit(void) {
359 
  refreshRunning = false;
360 
  sleep(1);
361 
  XSendEvent(vga.display, vga.win, False, 0, (XEvent *) &vga.shutdown);
362 
  XSync(vga.display, False);
363 
  while (installed) sleep(1);
364 
}
365 
 
366 
 
367 
static void vgaWrite(int x, int y, int r, int g, int b) {
368 
  XPutPixel(vga.image, x, y, RGB2PIXEL(r, g, b));
369 
}
370 
 
371 
 
372 
/**************************************************************/
373 
/**************************************************************/
374 
 
375 
 
376 
#define CELL_SIZE_X     8
377 
#define CELL_SIZE_Y     16
378 
 
379 
#define TEXT_SIZE_X     (WINDOW_SIZE_X / CELL_SIZE_X)
380 
#define TEXT_SIZE_Y     (WINDOW_SIZE_Y / CELL_SIZE_Y)
381 
 
382 
 
383 
static Half text[TEXT_SIZE_Y][TEXT_SIZE_X];
384 
 
385 
static Byte font[] = {
386 
#include "font"
387 
};
388 
 
389 
 
390 
static void updateCharacter(int x, int y, Half c) {
391 
  int xx, yy;
392 
  int i, j;
393 
  Byte pixels;
394 
  int r, g, b;
395 
 
396 
  xx = x * CELL_SIZE_X;
397 
  yy = y * CELL_SIZE_Y;
398 
  for (j = 0; j < CELL_SIZE_Y; j++) {
399 
    pixels = font[(c & 0x00FF) * CELL_SIZE_Y + j];
400 
    for (i = 0; i < CELL_SIZE_X; i++) {
401 
      if ((pixels & (1 << (CELL_SIZE_X - 1 - i))) != 0 &&
402 
          !((c & 0x8000) != 0 && blink)) {
403 
        /* foreground */
404 
        if (c & 0x0800) {
405 
          /* intensify bit is on */
406 
          r = (c & 0x0400) ? 255 : 73;
407 
          g = (c & 0x0200) ? 255 : 73;
408 
          b = (c & 0x0100) ? 255 : 73;
409 
        } else {
410 
          /* intensify bit is off */
411 
          r = (c & 0x0400) ? 146 : 0;
412 
          g = (c & 0x0200) ? 146 : 0;
413 
          b = (c & 0x0100) ? 146 : 0;
414 
        }
415 
      } else {
416 
        /* background */
417 
        r = (c & 0x4000) ? 146 : 0;
418 
        g = (c & 0x2000) ? 146 : 0;
419 
        b = (c & 0x1000) ? 146 : 0;
420 
      }
421 
      vgaWrite(xx + i, yy + j, r, g, b);
422 
    }
423 
  }
424 
}
425 
 
426 
 
427 
static void blinkScreen(void) {
428 
  static Bool previousBlink = false;
429 
  int x, y;
430 
  Half c;
431 
 
432 
  if (previousBlink == blink) {
433 
    /* blink state didn't change, nothing to do */
434 
    return;
435 
  }
436 
  previousBlink = blink;
437 
  for (y = 0; y < TEXT_SIZE_Y; y++) {
438 
    for (x = 0; x < TEXT_SIZE_X; x++) {
439 
      /* update the character if it is blinking */
440 
      c = text[y][x];
441 
      if (c & 0x8000) {
442 
        updateCharacter(x, y, c);
443 
      }
444 
    }
445 
  }
446 
}
447 
 
448 
 
449 
static Half readCharAndAttr(int x, int y) {
450 
  return text[y][x];
451 
}
452 
 
453 
 
454 
static void writeCharAndAttr(int x, int y, Half c) {
455 
  text[y][x] = c;
456 
  updateCharacter(x, y, c);
457 
}
458 
 
459 
 
460 
static char *screen[] = {
461 
#include "screen"
462 
};
463 
 
464 
 
465 
static void loadSplashScreen(void) {
466 
  int x, y;
467 
  char *p;
468 
 
469 
  for (y = 0; y < TEXT_SIZE_Y; y++) {
470 
    p = screen[y];
471 
    for (x = 0; x < TEXT_SIZE_X; x++) {
472 
      writeCharAndAttr(x, y, (Half) 0x0700 | (Half) *p);
473 
      p++;
474 
    }
475 
  }
476 
}
477 
 
478 
 
479 
/**************************************************************/
480 
 
481 
 
482 
Word displayRead(Word addr) {
483 
  int x, y;
484 
  Word data;
485 
 
486 
  if (debug) {
487 
    cPrintf("\n**** DISPLAY READ from 0x%08X", addr);
488 
  }
489 
  if (!installed) {
490 
    throwException(EXC_BUS_TIMEOUT);
491 
  }
492 
  x = (addr >> 2) & ((1 << 7) - 1);
493 
  y = (addr >> 9) & ((1 << 5) - 1);
494 
  if (x >= TEXT_SIZE_X || y >= TEXT_SIZE_Y) {
495 
    throwException(EXC_BUS_TIMEOUT);
496 
  }
497 
  data = readCharAndAttr(x, y);
498 
  if (debug) {
499 
    cPrintf(", data = 0x%08X ****\n", data);
500 
  }
501 
  return data;
502 
}
503 
 
504 
 
505 
void displayWrite(Word addr, Word data) {
506 
  int x, y;
507 
 
508 
  if (debug) {
509 
    cPrintf("\n**** DISPLAY WRITE to 0x%08X, data = 0x%08X ****\n",
510 
            addr, data);
511 
  }
512 
  if (!installed) {
513 
    throwException(EXC_BUS_TIMEOUT);
514 
  }
515 
  x = (addr >> 2) & ((1 << 7) - 1);
516 
  y = (addr >> 9) & ((1 << 5) - 1);
517 
  if (x >= TEXT_SIZE_X || y >= TEXT_SIZE_Y) {
518 
    throwException(EXC_BUS_TIMEOUT);
519 
  }
520 
  writeCharAndAttr(x, y, data);
521 
}
522 
 
523 
 
524 
void displayReset(void) {
525 
  if (!installed) {
526 
    return;
527 
  }
528 
  cPrintf("Resetting Display...\n");
529 
  loadSplashScreen();
530 
}
531 
 
532 
 
533 
void displayInit(void) {
534 
  if (!installed) {
535 
    vgaInit();
536 
  }
537 
  displayReset();
538 
}
539 
 
540 
 
541 
void displayExit(void) {
542 
  if (!installed) {
543 
    return;
544 
  }
545 
  vgaExit();
546 
}
547 
 
548 
 
549 
/**************************************************************/
550 
/**************************************************************/
551 
 
552 
 
553 
#define MAX_MAKE        2
554 
#define MAX_BREAK       3
555 
 
556 
 
557 
typedef struct {
558 
  unsigned int xKeycode;
559 
  int pcNumMake;
560 
  Byte pcKeyMake[MAX_MAKE];
561 
  int pcNumBreak;
562 
  Byte pcKeyBreak[MAX_BREAK];
563 
} Keycode;
564 
 
565 
 
566 
static Keycode kbdCodeTbl[] = {
567 
  { 0x09, 1, { 0x76, 0x00 }, 2, { 0xF0, 0x76, 0x00 } },
568 
  { 0x43, 1, { 0x05, 0x00 }, 2, { 0xF0, 0x05, 0x00 } },
569 
  { 0x44, 1, { 0x06, 0x00 }, 2, { 0xF0, 0x06, 0x00 } },
570 
  { 0x45, 1, { 0x04, 0x00 }, 2, { 0xF0, 0x04, 0x00 } },
571 
  { 0x46, 1, { 0x0C, 0x00 }, 2, { 0xF0, 0x0C, 0x00 } },
572 
  { 0x47, 1, { 0x03, 0x00 }, 2, { 0xF0, 0x03, 0x00 } },
573 
  { 0x48, 1, { 0x0B, 0x00 }, 2, { 0xF0, 0x0B, 0x00 } },
574 
  { 0x49, 1, { 0x83, 0x00 }, 2, { 0xF0, 0x83, 0x00 } },
575 
  { 0x4A, 1, { 0x0A, 0x00 }, 2, { 0xF0, 0x0A, 0x00 } },
576 
  { 0x4B, 1, { 0x01, 0x00 }, 2, { 0xF0, 0x01, 0x00 } },
577 
  { 0x4C, 1, { 0x09, 0x00 }, 2, { 0xF0, 0x09, 0x00 } },
578 
  { 0x5F, 1, { 0x78, 0x00 }, 2, { 0xF0, 0x78, 0x00 } },
579 
  { 0x60, 1, { 0x07, 0x00 }, 2, { 0xF0, 0x07, 0x00 } },
580 
  /*------------------------------------------------*/
581 
  { 0x31, 1, { 0x0E, 0x00 }, 2, { 0xF0, 0x0E, 0x00 } },
582 
  { 0x0A, 1, { 0x16, 0x00 }, 2, { 0xF0, 0x16, 0x00 } },
583 
  { 0x0B, 1, { 0x1E, 0x00 }, 2, { 0xF0, 0x1E, 0x00 } },
584 
  { 0x0C, 1, { 0x26, 0x00 }, 2, { 0xF0, 0x26, 0x00 } },
585 
  { 0x0D, 1, { 0x25, 0x00 }, 2, { 0xF0, 0x25, 0x00 } },
586 
  { 0x0E, 1, { 0x2E, 0x00 }, 2, { 0xF0, 0x2E, 0x00 } },
587 
  { 0x0F, 1, { 0x36, 0x00 }, 2, { 0xF0, 0x36, 0x00 } },
588 
  { 0x10, 1, { 0x3D, 0x00 }, 2, { 0xF0, 0x3D, 0x00 } },
589 
  { 0x11, 1, { 0x3E, 0x00 }, 2, { 0xF0, 0x3E, 0x00 } },
590 
  { 0x12, 1, { 0x46, 0x00 }, 2, { 0xF0, 0x46, 0x00 } },
591 
  { 0x13, 1, { 0x45, 0x00 }, 2, { 0xF0, 0x45, 0x00 } },
592 
  { 0x14, 1, { 0x4E, 0x00 }, 2, { 0xF0, 0x4E, 0x00 } },
593 
  { 0x15, 1, { 0x55, 0x00 }, 2, { 0xF0, 0x55, 0x00 } },
594 
  { 0x16, 1, { 0x66, 0x00 }, 2, { 0xF0, 0x66, 0x00 } },
595 
  /*------------------------------------------------*/
596 
  { 0x17, 1, { 0x0D, 0x00 }, 2, { 0xF0, 0x0D, 0x00 } },
597 
  { 0x18, 1, { 0x15, 0x00 }, 2, { 0xF0, 0x15, 0x00 } },
598 
  { 0x19, 1, { 0x1D, 0x00 }, 2, { 0xF0, 0x1D, 0x00 } },
599 
  { 0x1A, 1, { 0x24, 0x00 }, 2, { 0xF0, 0x24, 0x00 } },
600 
  { 0x1B, 1, { 0x2D, 0x00 }, 2, { 0xF0, 0x2D, 0x00 } },
601 
  { 0x1C, 1, { 0x2C, 0x00 }, 2, { 0xF0, 0x2C, 0x00 } },
602 
  { 0x1D, 1, { 0x35, 0x00 }, 2, { 0xF0, 0x35, 0x00 } },
603 
  { 0x1E, 1, { 0x3C, 0x00 }, 2, { 0xF0, 0x3C, 0x00 } },
604 
  { 0x1F, 1, { 0x43, 0x00 }, 2, { 0xF0, 0x43, 0x00 } },
605 
  { 0x20, 1, { 0x44, 0x00 }, 2, { 0xF0, 0x44, 0x00 } },
606 
  { 0x21, 1, { 0x4D, 0x00 }, 2, { 0xF0, 0x4D, 0x00 } },
607 
  { 0x22, 1, { 0x54, 0x00 }, 2, { 0xF0, 0x54, 0x00 } },
608 
  { 0x23, 1, { 0x5B, 0x00 }, 2, { 0xF0, 0x5B, 0x00 } },
609 
  { 0x24, 1, { 0x5A, 0x00 }, 2, { 0xF0, 0x5A, 0x00 } },
610 
  /*------------------------------------------------*/
611 
  { 0x42, 1, { 0x58, 0x00 }, 2, { 0xF0, 0x58, 0x00 } },
612 
  { 0x26, 1, { 0x1C, 0x00 }, 2, { 0xF0, 0x1C, 0x00 } },
613 
  { 0x27, 1, { 0x1B, 0x00 }, 2, { 0xF0, 0x1B, 0x00 } },
614 
  { 0x28, 1, { 0x23, 0x00 }, 2, { 0xF0, 0x23, 0x00 } },
615 
  { 0x29, 1, { 0x2B, 0x00 }, 2, { 0xF0, 0x2B, 0x00 } },
616 
  { 0x2A, 1, { 0x34, 0x00 }, 2, { 0xF0, 0x34, 0x00 } },
617 
  { 0x2B, 1, { 0x33, 0x00 }, 2, { 0xF0, 0x33, 0x00 } },
618 
  { 0x2C, 1, { 0x3B, 0x00 }, 2, { 0xF0, 0x3B, 0x00 } },
619 
  { 0x2D, 1, { 0x42, 0x00 }, 2, { 0xF0, 0x42, 0x00 } },
620 
  { 0x2E, 1, { 0x4B, 0x00 }, 2, { 0xF0, 0x4B, 0x00 } },
621 
  { 0x2F, 1, { 0x4C, 0x00 }, 2, { 0xF0, 0x4C, 0x00 } },
622 
  { 0x30, 1, { 0x52, 0x00 }, 2, { 0xF0, 0x52, 0x00 } },
623 
  { 0x33, 1, { 0x5D, 0x00 }, 2, { 0xF0, 0x5D, 0x00 } },
624 
  /*------------------------------------------------*/
625 
  { 0x32, 1, { 0x12, 0x00 }, 2, { 0xF0, 0x12, 0x00 } },
626 
  { 0x5E, 1, { 0x61, 0x00 }, 2, { 0xF0, 0x61, 0x00 } },
627 
  { 0x34, 1, { 0x1A, 0x00 }, 2, { 0xF0, 0x1A, 0x00 } },
628 
  { 0x35, 1, { 0x22, 0x00 }, 2, { 0xF0, 0x22, 0x00 } },
629 
  { 0x36, 1, { 0x21, 0x00 }, 2, { 0xF0, 0x21, 0x00 } },
630 
  { 0x37, 1, { 0x2A, 0x00 }, 2, { 0xF0, 0x2A, 0x00 } },
631 
  { 0x38, 1, { 0x32, 0x00 }, 2, { 0xF0, 0x32, 0x00 } },
632 
  { 0x39, 1, { 0x31, 0x00 }, 2, { 0xF0, 0x31, 0x00 } },
633 
  { 0x3A, 1, { 0x3A, 0x00 }, 2, { 0xF0, 0x3A, 0x00 } },
634 
  { 0x3B, 1, { 0x41, 0x00 }, 2, { 0xF0, 0x41, 0x00 } },
635 
  { 0x3C, 1, { 0x49, 0x00 }, 2, { 0xF0, 0x49, 0x00 } },
636 
  { 0x3D, 1, { 0x4A, 0x00 }, 2, { 0xF0, 0x4A, 0x00 } },
637 
  { 0x3E, 1, { 0x59, 0x00 }, 2, { 0xF0, 0x59, 0x00 } },
638 
  /*------------------------------------------------*/
639 
  { 0x25, 1, { 0x14, 0x00 }, 2, { 0xF0, 0x14, 0x00 } },
640 
  { 0x73, 2, { 0xE0, 0x1F }, 3, { 0xE0, 0xF0, 0x1F } },
641 
  { 0x40, 1, { 0x11, 0x00 }, 2, { 0xF0, 0x11, 0x00 } },
642 
  { 0x41, 1, { 0x29, 0x00 }, 2, { 0xF0, 0x29, 0x00 } },
643 
  { 0x71, 2, { 0xE0, 0x11 }, 3, { 0xE0, 0xF0, 0x11 } },
644 
  { 0x74, 2, { 0xE0, 0x27 }, 3, { 0xE0, 0xF0, 0x27 } },
645 
  { 0x75, 2, { 0xE0, 0x2F }, 3, { 0xE0, 0xF0, 0x2F } },
646 
  { 0x6D, 2, { 0xE0, 0x14 }, 3, { 0xE0, 0xF0, 0x14 } },
647 
  /*------------------------------------------------*/
648 
  { 0x6A, 2, { 0xE0, 0x70 }, 3, { 0xE0, 0xF0, 0x70 } },
649 
  { 0x61, 2, { 0xE0, 0x6C }, 3, { 0xE0, 0xF0, 0x6C } },
650 
  { 0x63, 2, { 0xE0, 0x7D }, 3, { 0xE0, 0xF0, 0x7D } },
651 
  { 0x6B, 2, { 0xE0, 0x71 }, 3, { 0xE0, 0xF0, 0x71 } },
652 
  { 0x67, 2, { 0xE0, 0x69 }, 3, { 0xE0, 0xF0, 0x69 } },
653 
  { 0x69, 2, { 0xE0, 0x7A }, 3, { 0xE0, 0xF0, 0x7A } },
654 
  { 0x62, 2, { 0xE0, 0x75 }, 3, { 0xE0, 0xF0, 0x75 } },
655 
  { 0x64, 2, { 0xE0, 0x6B }, 3, { 0xE0, 0xF0, 0x6B } },
656 
  { 0x68, 2, { 0xE0, 0x72 }, 3, { 0xE0, 0xF0, 0x72 } },
657 
  { 0x66, 2, { 0xE0, 0x74 }, 3, { 0xE0, 0xF0, 0x74 } },
658 
  /*------------------------------------------------*/
659 
  { 0x4D, 1, { 0x77, 0x00 }, 2, { 0xF0, 0x77, 0x00 } },
660 
  { 0x70, 2, { 0xE0, 0x4A }, 3, { 0xE0, 0xF0, 0x4A } },
661 
  { 0x3F, 1, { 0x7C, 0x00 }, 2, { 0xF0, 0x7C, 0x00 } },
662 
  { 0x52, 1, { 0x7B, 0x00 }, 2, { 0xF0, 0x7B, 0x00 } },
663 
  { 0x4F, 1, { 0x6C, 0x00 }, 2, { 0xF0, 0x6C, 0x00 } },
664 
  { 0x50, 1, { 0x75, 0x00 }, 2, { 0xF0, 0x75, 0x00 } },
665 
  { 0x51, 1, { 0x7D, 0x00 }, 2, { 0xF0, 0x7D, 0x00 } },
666 
  { 0x56, 1, { 0x79, 0x00 }, 2, { 0xF0, 0x79, 0x00 } },
667 
  { 0x53, 1, { 0x6B, 0x00 }, 2, { 0xF0, 0x6B, 0x00 } },
668 
  { 0x54, 1, { 0x73, 0x00 }, 2, { 0xF0, 0x73, 0x00 } },
669 
  { 0x55, 1, { 0x74, 0x00 }, 2, { 0xF0, 0x74, 0x00 } },
670 
  { 0x57, 1, { 0x69, 0x00 }, 2, { 0xF0, 0x69, 0x00 } },
671 
  { 0x58, 1, { 0x72, 0x00 }, 2, { 0xF0, 0x72, 0x00 } },
672 
  { 0x59, 1, { 0x7A, 0x00 }, 2, { 0xF0, 0x7A, 0x00 } },
673 
  { 0x6C, 2, { 0xE0, 0x5A }, 3, { 0xE0, 0xF0, 0x5A } },
674 
  { 0x5A, 1, { 0x70, 0x00 }, 2, { 0xF0, 0x70, 0x00 } },
675 
  { 0x5B, 1, { 0x71, 0x00 }, 2, { 0xF0, 0x71, 0x00 } },
676 
};
677 
 
678 
 
679 
static int keycodeCompare(const void *code1, const void *code2) {
680 
  return ((Keycode *) code1)->xKeycode - ((Keycode *) code2)->xKeycode;
681 
}
682 
 
683 
 
684 
static void initKeycode(void) {
685 
  qsort(kbdCodeTbl, sizeof(kbdCodeTbl)/sizeof(kbdCodeTbl[0]),
686 
        sizeof(kbdCodeTbl[0]), keycodeCompare);
687 
}
688 
 
689 
 
690 
static Keycode *lookupKeycode(unsigned int xKeycode) {
691 
  int lo, hi, tst;
692 
  int res;
693 
 
694 
  lo = 0;
695 
  hi = sizeof(kbdCodeTbl) / sizeof(kbdCodeTbl[0]) - 1;
696 
  while (lo <= hi) {
697 
    tst = (lo + hi) / 2;
698 
    res = kbdCodeTbl[tst].xKeycode - xKeycode;
699 
    if (res == 0) {
700 
      return &kbdCodeTbl[tst];
701 
    }
702 
    if (res < 0) {
703 
      lo = tst + 1;
704 
    } else {
705 
      hi = tst - 1;
706 
    }
707 
  }
708 
  return NULL;
709 
}
710 
 
711 
 
712 
/**************************************************************/
713 
 
714 
 
715 
#define KBD_BUF_MAX             100
716 
#define KBD_BUF_NEXT(p)         (((p) + 1) % KBD_BUF_MAX)
717 
 
718 
 
719 
static Byte kbdBuf[KBD_BUF_MAX];
720 
static int kbdBufWritePtr;
721 
static int kbdBufReadPtr;
722 
 
723 
 
724 
static void kbdBufInit(void) {
725 
  initKeycode();
726 
  kbdBufWritePtr = 0;
727 
  kbdBufReadPtr = 0;
728 
}
729 
 
730 
 
731 
static int kbdBufFree(void) {
732 
  if (kbdBufReadPtr <= kbdBufWritePtr) {
733 
    return KBD_BUF_MAX - (kbdBufWritePtr - kbdBufReadPtr) - 1;
734 
  } else {
735 
    return (kbdBufReadPtr - kbdBufWritePtr) - 1;
736 
  }
737 
}
738 
 
739 
 
740 
static void keyPressed(unsigned int xKeycode) {
741 
  Keycode *p;
742 
  int i;
743 
 
744 
  if (debugKeycode) {
745 
    cPrintf("**** KEY PRESSED: 0x%08X ****\n", xKeycode);
746 
  }
747 
  p = lookupKeycode(xKeycode);
748 
  if (p == NULL) {
749 
    /* keycode not found */
750 
    return;
751 
  }
752 
  if (kbdBufFree() < (MAX_MAKE + MAX_BREAK) * 4) {
753 
    /* buffer full */
754 
    return;
755 
  }
756 
  for (i = 0; i < p->pcNumMake; i++) {
757 
    kbdBuf[kbdBufWritePtr] = p->pcKeyMake[i];
758 
    kbdBufWritePtr = KBD_BUF_NEXT(kbdBufWritePtr);
759 
  }
760 
}
761 
 
762 
 
763 
static void keyReleased(unsigned int xKeycode) {
764 
  Keycode *p;
765 
  int i;
766 
 
767 
  if (debugKeycode) {
768 
    cPrintf("**** KEY RELEASED: 0x%08X ****\n", xKeycode);
769 
  }
770 
  p = lookupKeycode(xKeycode);
771 
  if (p == NULL) {
772 
    /* keycode not found */
773 
    return;
774 
  }
775 
  if (kbdBufFree() < MAX_BREAK * 4) {
776 
    /* buffer full */
777 
    return;
778 
  }
779 
  for (i = 0; i < p->pcNumBreak; i++) {
780 
    kbdBuf[kbdBufWritePtr] = p->pcKeyBreak[i];
781 
    kbdBufWritePtr = KBD_BUF_NEXT(kbdBufWritePtr);
782 
  }
783 
}
784 
 
785 
 
786 
/**************************************************************/
787 
 
788 
 
789 
static Word kbdCtrl;
790 
static Word kbdData;
791 
 
792 
 
793 
static void kbdCallback(int dev) {
794 
  if (debug) {
795 
    cPrintf("\n**** KEYBOARD CALLBACK ****\n");
796 
  }
797 25 hellwig 
  timerStart(KEYBOARD_USEC, kbdCallback, dev);
798 8 hellwig 
  if (kbdBufWritePtr == kbdBufReadPtr) {
799 
    /* no character ready */
800 
    return;
801 
  }
802 
  /* any character typed */
803 
  kbdData = kbdBuf[kbdBufReadPtr];
804 
  kbdBufReadPtr = KBD_BUF_NEXT(kbdBufReadPtr);
805 
  kbdCtrl |= KEYBOARD_RDY;
806 
  if (kbdCtrl & KEYBOARD_IEN) {
807 
    /* raise keyboard interrupt */
808 
    cpuSetInterrupt(IRQ_KEYBOARD);
809 
  }
810 
}
811 
 
812 
 
813 
Word keyboardRead(Word addr) {
814 
  Word data;
815 
 
816 
  if (debug) {
817 
    cPrintf("\n**** KEYBOARD READ from 0x%08X", addr);
818 
  }
819 
  if (!installed) {
820 
    throwException(EXC_BUS_TIMEOUT);
821 
  }
822 
  if (addr == KEYBOARD_CTRL) {
823 
    data = kbdCtrl;
824 
  } else
825 
  if (addr == KEYBOARD_DATA) {
826 
    kbdCtrl &= ~KEYBOARD_RDY;
827 
    if (kbdCtrl & KEYBOARD_IEN) {
828 
      /* lower keyboard interrupt */
829 
      cpuResetInterrupt(IRQ_KEYBOARD);
830 
    }
831 
    data = kbdData;
832 
  } else {
833 
    /* illegal register */
834 
    throwException(EXC_BUS_TIMEOUT);
835 
  }
836 
  if (debug) {
837 
    cPrintf(", data = 0x%08X ****\n", data);
838 
  }
839 
  return data;
840 
}
841 
 
842 
 
843 
void keyboardWrite(Word addr, Word data) {
844 
  if (debug) {
845 
    cPrintf("\n**** KEYBOARD WRITE to 0x%08X, data = 0x%08X ****\n",
846 
            addr, data);
847 
  }
848 
  if (!installed) {
849 
    throwException(EXC_BUS_TIMEOUT);
850 
  }
851 
  if (addr == KEYBOARD_CTRL) {
852 
    if (data & KEYBOARD_IEN) {
853 
      kbdCtrl |= KEYBOARD_IEN;
854 
    } else {
855 
      kbdCtrl &= ~KEYBOARD_IEN;
856 
    }
857 
    if (data & KEYBOARD_RDY) {
858 
      kbdCtrl |= KEYBOARD_RDY;
859 
    } else {
860 
      kbdCtrl &= ~KEYBOARD_RDY;
861 
    }
862 
    if ((kbdCtrl & KEYBOARD_IEN) != 0 &&
863 
        (kbdCtrl & KEYBOARD_RDY) != 0) {
864 
      /* raise keyboard interrupt */
865 
      cpuSetInterrupt(IRQ_KEYBOARD);
866 
    } else {
867 
      /* lower keyboard interrupt */
868 
      cpuResetInterrupt(IRQ_KEYBOARD);
869 
    }
870 
  } else
871 
  if (addr == KEYBOARD_DATA) {
872 
    /* this register is read-only */
873 
    throwException(EXC_BUS_TIMEOUT);
874 
  } else {
875 
    /* illegal register */
876 
    throwException(EXC_BUS_TIMEOUT);
877 
  }
878 
}
879 
 
880 
 
881 
void keyboardReset(void) {
882 
  if (!installed) {
883 
    return;
884 
  }
885 
  cPrintf("Resetting Keyboard...\n");
886 
  kbdBufInit();
887 
  kbdCtrl = 0;
888 
  kbdData = 0;
889 25 hellwig 
  timerStart(KEYBOARD_USEC, kbdCallback, 0);
890 8 hellwig 
}
891 
 
892 
 
893 
void keyboardInit(void) {
894 
  if (!installed) {
895 
    vgaInit();
896 
  }
897 
  keyboardReset();
898 
}
899 
 
900 
 
901 
void keyboardExit(void) {
902 
  if (!installed) {
903 
    return;
904 
  }
905 
  vgaExit();
906 
}

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