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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 298

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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;
22 251 hellwig 
static Bool volatile installed = false;
23 8 hellwig 
 
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)
52 251 hellwig 
#define RGB2PIXEL(r,g,b)        (0xFF000000 | \
53 
                                 C2B(r, vga.red) | \
54 8 hellwig 
                                 C2B(g, vga.green) | \
55 
                                 C2B(b, vga.blue))
56 
 
57 
 
58 
typedef struct {
59 
  unsigned long scale;
60 
  unsigned long factor;
61 
} ColorChannel;
62 
 
63 
 
64 
typedef struct {
65 
  int argc;
66 
  char **argv;
67 
  Display *display;
68 
  Window win;
69 
  GC gc;
70 
  XImage *image;
71 
  ColorChannel red, green, blue;
72 
  XExposeEvent expose;
73 
  XClientMessageEvent shutdown;
74 
} VGA;
75 
 
76 
 
77 
static VGA vga;
78 
 
79 
 
80 
/**************************************************************/
81 
 
82 
/* monitor server */
83 
 
84 
 
85 
static ColorChannel mask2channel(unsigned long mask) {
86 
  unsigned long f;
87 
  ColorChannel ch;
88 
 
89 
  if (mask == 0) {
90 
    error("color mask is 0 in mask2channel");
91 
  }
92 
  for (f = 1; (mask & 1) == 0; f <<= 1) {
93 
    mask >>= 1;
94 
  }
95 
  ch.factor = f;
96 
  ch.scale = mask + 1;
97 
  while ((mask & 1) != 0) {
98 
    mask >>= 1;
99 
  }
100 
  if (mask != 0) {
101 
    error("scattered color mask bits in mask2channel");
102 
  }
103 
  return ch;
104 
}
105 
 
106 
 
107 
static void initMonitor(int argc, char *argv[]) {
108 
  int screenNum;
109 
  Window rootWin;
110 
  XVisualInfo visualTemp;
111 
  XVisualInfo *visualInfo;
112 
  int visualCount;
113 
  int bestMatch;
114 
  int bestDepth;
115 
  Visual *visual;
116 
  int i;
117 
  unsigned long pixel;
118 
  int x, y;
119 
  Colormap colormap;
120 
  XSetWindowAttributes attrib;
121 
  XSizeHints *sizeHints;
122 
  XWMHints *wmHints;
123 
  XClassHint *classHints;
124 
  XTextProperty windowName;
125 
  XGCValues gcValues;
126 
 
127 
  /* connect to X server */
128 
  if (XInitThreads() == 0) {
129 
    error("no thread support for X11");
130 
  }
131 
  vga.display = XOpenDisplay(NULL);
132 
  if (vga.display == NULL) {
133 
    error("cannot connect to X server");
134 
  }
135 
  screenNum = DefaultScreen(vga.display);
136 
  rootWin = RootWindow(vga.display, screenNum);
137 
  /* find TrueColor visual */
138 
  visualTemp.screen = screenNum;
139 
  visualTemp.class = TrueColor;
140 
  visualInfo = XGetVisualInfo(vga.display,
141 
                              VisualClassMask | VisualScreenMask,
142 
                              &visualTemp, &visualCount);
143 
  if (visualInfo == NULL || visualCount == 0) {
144 
    error("no TrueColor visual found");
145 
  }
146 
  bestMatch = 0;
147 
  bestDepth = visualInfo[0].depth;
148 
  visual = visualInfo[0].visual;
149 
  for (i = 1; i < visualCount; i++) {
150 
    if (visualInfo[i].depth > bestDepth) {
151 
      bestMatch = i;
152 
      bestDepth = visualInfo[i].depth;
153 
      visual = visualInfo[i].visual;
154 
    }
155 
  }
156 
  /* build color channels */
157 
  vga.red = mask2channel(visualInfo[bestMatch].red_mask);
158 
  vga.green = mask2channel(visualInfo[bestMatch].green_mask);
159 
  vga.blue = mask2channel(visualInfo[bestMatch].blue_mask);
160 
  /* create and initialize image */
161 
  vga.image = XCreateImage(vga.display, visual, bestDepth, ZPixmap,
162 
                           0, NULL, WINDOW_SIZE_X, WINDOW_SIZE_Y, 32, 0);
163 
  if (vga.image == NULL) {
164 
    error("cannot allocate image");
165 
  }
166 
  vga.image->data = malloc(vga.image->height * vga.image->bytes_per_line);
167 
  if (vga.image->data == NULL) {
168 
    error("cannot allocate image memory");
169 
  }
170 
  pixel = RGB2PIXEL(0, 0, 0);
171 
  for (y = 0; y < WINDOW_SIZE_Y; y++) {
172 
    for (x = 0; x < WINDOW_SIZE_X; x++) {
173 
      XPutPixel(vga.image, x, y, pixel);
174 
    }
175 
  }
176 
  /* allocate a colormap */
177 
  colormap = XCreateColormap(vga.display, rootWin, visual, AllocNone);
178 
  /* create the window */
179 
  attrib.colormap = colormap;
180 
  attrib.event_mask = ExposureMask | KeyPressMask | KeyReleaseMask;
181 
  attrib.background_pixel = RGB2PIXEL(0, 0, 0);
182 
  attrib.border_pixel = RGB2PIXEL(0, 0, 0);
183 
  vga.win =
184 
    XCreateWindow(vga.display, rootWin,
185 
                  WINDOW_POS_X, WINDOW_POS_Y,
186 
                  WINDOW_SIZE_X, WINDOW_SIZE_Y,
187 
                  0, bestDepth, InputOutput, visual,
188 
                  CWEventMask | CWColormap | CWBackPixel | CWBorderPixel,
189 
                  &attrib);
190 
  /* give hints to window manager */
191 
  sizeHints = XAllocSizeHints();
192 
  wmHints = XAllocWMHints();
193 
  classHints = XAllocClassHint();
194 
  if (sizeHints == NULL ||
195 
      wmHints == NULL ||
196 
      classHints == NULL) {
197 
    error("hint allocation failed");
198 
  }
199 
  sizeHints->flags = PMinSize | PMaxSize;
200 
  sizeHints->min_width = WINDOW_SIZE_X;
201 
  sizeHints->min_height = WINDOW_SIZE_Y;
202 
  sizeHints->max_width = WINDOW_SIZE_X;
203 
  sizeHints->max_height = WINDOW_SIZE_Y;
204 
  wmHints->flags = StateHint | InputHint;
205 
  wmHints->input = True;
206 
  wmHints->initial_state = NormalState;
207 159 hellwig 
  classHints->res_name = "ECO32 Console";
208 8 hellwig 
  classHints->res_class = "ECO32";
209 
  if (XStringListToTextProperty(&classHints->res_name, 1, &windowName) == 0) {
210 
    error("property allocation failed");
211 
  }
212 
  XSetWMProperties(vga.display, vga.win, &windowName, NULL,
213 
                   argv, argc, sizeHints, wmHints, classHints);
214 
  /* create a GC */
215 
  vga.gc = XCreateGC(vga.display, vga.win, 0, &gcValues);
216 
  /* finally get the window displayed */
217 
  XMapWindow(vga.display, vga.win);
218 
  /* prepare expose event */
219 
  vga.expose.type = Expose;
220 
  vga.expose.display = vga.display;
221 
  vga.expose.window = vga.win;
222 
  vga.expose.x = 0;
223 
  vga.expose.y = 0;
224 
  vga.expose.width = WINDOW_SIZE_X;
225 
  vga.expose.height = WINDOW_SIZE_Y;
226 
  vga.expose.count = 0;
227 
  /* prepare shutdown event */
228 
  vga.shutdown.type = ClientMessage;
229 
  vga.shutdown.display = vga.display;
230 
  vga.shutdown.window = vga.win;
231 
  vga.shutdown.message_type = XA_WM_COMMAND;
232 251 hellwig 
  vga.shutdown.format = 8;
233 8 hellwig 
  /* 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 &&
275 251 hellwig 
            event.xclient.format == 8) {
276 8 hellwig 
          run = false;
277 
        }
278 
        break;
279 
      case KeyPress:
280 
        keyPressed(event.xkey.keycode);
281 
        break;
282 
      case KeyRelease:
283 
        keyReleased(event.xkey.keycode);
284 
        break;
285 
      default:
286 
        break;
287 
    }
288 
  }
289 
  exitMonitor();
290 
  return NULL;
291 
}
292 
 
293 
 
294 
/**************************************************************/
295 
 
296 
/* refresh timer */
297 
 
298 
 
299 251 hellwig 
static Bool volatile refreshRunning = false;
300 
static Bool volatile blink = false;
301 8 hellwig 
 
302 
 
303 
static void *refresh(void *ignore) {
304 
  static int blinkCounter = 0;
305 
  struct timespec delay;
306 
 
307 
  while (refreshRunning) {
308 
    if (++blinkCounter == 5) {
309 
      blinkCounter = 0;
310 
      blink = !blink;
311 
    }
312 
    XSendEvent(vga.display, vga.win, False, 0, (XEvent *) &vga.expose);
313 
    XFlush(vga.display);
314 
    delay.tv_sec = 0;
315 
    delay.tv_nsec = 100 * 1000 * 1000;
316 
    nanosleep(&delay, &delay);
317 
  }
318 
  return NULL;
319 
}
320 
 
321 
 
322 
/**************************************************************/
323 
 
324 
/* server interface */
325 
 
326 
 
327 
static int myArgc = 1;
328 
static char *myArgv[] = {
329 
  "eco32",
330 
  NULL
331 
};
332 
 
333 251 hellwig 
static pthread_t monitorThread;
334 
static pthread_t refreshThread;
335 8 hellwig 
 
336 251 hellwig 
 
337 8 hellwig 
static void vgaInit(void) {
338 
  /* start monitor server in a separate thread */
339 
  vga.argc = myArgc;
340 
  vga.argv = myArgv;
341 251 hellwig 
  if (pthread_create(&monitorThread, NULL, server, NULL) != 0) {
342 8 hellwig 
    error("cannot start monitor server");
343 
  }
344 251 hellwig 
  while (!installed) ;
345 8 hellwig 
  /* start refresh timer in another thread */
346 
  refreshRunning = true;
347 251 hellwig 
  if (pthread_create(&refreshThread, NULL, refresh, NULL) != 0) {
348 8 hellwig 
    error("cannot start refresh timer");
349 
  }
350 
}
351 
 
352 
 
353 
static void vgaExit(void) {
354 
  refreshRunning = false;
355 251 hellwig 
  pthread_join(refreshThread, NULL);
356 8 hellwig 
  XSendEvent(vga.display, vga.win, False, 0, (XEvent *) &vga.shutdown);
357 
  XSync(vga.display, False);
358 251 hellwig 
  pthread_join(monitorThread, NULL);
359 8 hellwig 
}
360 
 
361 
 
362 
static void vgaWrite(int x, int y, int r, int g, int b) {
363 
  XPutPixel(vga.image, x, y, RGB2PIXEL(r, g, b));
364 
}
365 
 
366 
 
367 
/**************************************************************/
368 
/**************************************************************/
369 
 
370 
 
371 
#define CELL_SIZE_X     8
372 
#define CELL_SIZE_Y     16
373 
 
374 
#define TEXT_SIZE_X     (WINDOW_SIZE_X / CELL_SIZE_X)
375 
#define TEXT_SIZE_Y     (WINDOW_SIZE_Y / CELL_SIZE_Y)
376 
 
377 
 
378 
static Half text[TEXT_SIZE_Y][TEXT_SIZE_X];
379 
 
380 
static Byte font[] = {
381 
#include "font"
382 
};
383 
 
384 
 
385 
static void updateCharacter(int x, int y, Half c) {
386 
  int xx, yy;
387 
  int i, j;
388 
  Byte pixels;
389 
  int r, g, b;
390 
 
391 
  xx = x * CELL_SIZE_X;
392 
  yy = y * CELL_SIZE_Y;
393 
  for (j = 0; j < CELL_SIZE_Y; j++) {
394 
    pixels = font[(c & 0x00FF) * CELL_SIZE_Y + j];
395 
    for (i = 0; i < CELL_SIZE_X; i++) {
396 
      if ((pixels & (1 << (CELL_SIZE_X - 1 - i))) != 0 &&
397 
          !((c & 0x8000) != 0 && blink)) {
398 
        /* foreground */
399 
        if (c & 0x0800) {
400 
          /* intensify bit is on */
401 
          r = (c & 0x0400) ? 255 : 73;
402 
          g = (c & 0x0200) ? 255 : 73;
403 
          b = (c & 0x0100) ? 255 : 73;
404 
        } else {
405 
          /* intensify bit is off */
406 
          r = (c & 0x0400) ? 146 : 0;
407 
          g = (c & 0x0200) ? 146 : 0;
408 
          b = (c & 0x0100) ? 146 : 0;
409 
        }
410 
      } else {
411 
        /* background */
412 
        r = (c & 0x4000) ? 146 : 0;
413 
        g = (c & 0x2000) ? 146 : 0;
414 
        b = (c & 0x1000) ? 146 : 0;
415 
      }
416 
      vgaWrite(xx + i, yy + j, r, g, b);
417 
    }
418 
  }
419 
}
420 
 
421 
 
422 
static void blinkScreen(void) {
423 
  static Bool previousBlink = false;
424 
  int x, y;
425 
  Half c;
426 
 
427 
  if (previousBlink == blink) {
428 
    /* blink state didn't change, nothing to do */
429 
    return;
430 
  }
431 
  previousBlink = blink;
432 
  for (y = 0; y < TEXT_SIZE_Y; y++) {
433 
    for (x = 0; x < TEXT_SIZE_X; x++) {
434 
      /* update the character if it is blinking */
435 
      c = text[y][x];
436 
      if (c & 0x8000) {
437 
        updateCharacter(x, y, c);
438 
      }
439 
    }
440 
  }
441 
}
442 
 
443 
 
444 
static Half readCharAndAttr(int x, int y) {
445 
  return text[y][x];
446 
}
447 
 
448 
 
449 
static void writeCharAndAttr(int x, int y, Half c) {
450 
  text[y][x] = c;
451 
  updateCharacter(x, y, c);
452 
}
453 
 
454 
 
455 
static char *screen[] = {
456 
#include "screen"
457 
};
458 
 
459 
 
460 
static void loadSplashScreen(void) {
461 
  int x, y;
462 
  char *p;
463 
 
464 
  for (y = 0; y < TEXT_SIZE_Y; y++) {
465 
    p = screen[y];
466 
    for (x = 0; x < TEXT_SIZE_X; x++) {
467 
      writeCharAndAttr(x, y, (Half) 0x0700 | (Half) *p);
468 
      p++;
469 
    }
470 
  }
471 
}
472 
 
473 
 
474 
/**************************************************************/
475 
 
476 
 
477 
Word displayRead(Word addr) {
478 
  int x, y;
479 
  Word data;
480 
 
481 
  if (debug) {
482 
    cPrintf("\n**** DISPLAY READ from 0x%08X", addr);
483 
  }
484 
  if (!installed) {
485 
    throwException(EXC_BUS_TIMEOUT);
486 
  }
487 
  x = (addr >> 2) & ((1 << 7) - 1);
488 
  y = (addr >> 9) & ((1 << 5) - 1);
489 
  if (x >= TEXT_SIZE_X || y >= TEXT_SIZE_Y) {
490 
    throwException(EXC_BUS_TIMEOUT);
491 
  }
492 
  data = readCharAndAttr(x, y);
493 
  if (debug) {
494 
    cPrintf(", data = 0x%08X ****\n", data);
495 
  }
496 
  return data;
497 
}
498 
 
499 
 
500 
void displayWrite(Word addr, Word data) {
501 
  int x, y;
502 
 
503 
  if (debug) {
504 
    cPrintf("\n**** DISPLAY WRITE to 0x%08X, data = 0x%08X ****\n",
505 
            addr, data);
506 
  }
507 
  if (!installed) {
508 
    throwException(EXC_BUS_TIMEOUT);
509 
  }
510 
  x = (addr >> 2) & ((1 << 7) - 1);
511 
  y = (addr >> 9) & ((1 << 5) - 1);
512 
  if (x >= TEXT_SIZE_X || y >= TEXT_SIZE_Y) {
513 
    throwException(EXC_BUS_TIMEOUT);
514 
  }
515 
  writeCharAndAttr(x, y, data);
516 
}
517 
 
518 
 
519 
void displayReset(void) {
520 
  if (!installed) {
521 
    return;
522 
  }
523 
  cPrintf("Resetting Display...\n");
524 
  loadSplashScreen();
525 
}
526 
 
527 
 
528 
void displayInit(void) {
529 
  if (!installed) {
530 
    vgaInit();
531 
  }
532 
  displayReset();
533 
}
534 
 
535 
 
536 
void displayExit(void) {
537 
  if (!installed) {
538 
    return;
539 
  }
540 
  vgaExit();
541 
}
542 
 
543 
 
544 
/**************************************************************/
545 
/**************************************************************/
546 
 
547 
 
548 
#define MAX_MAKE        2
549 
#define MAX_BREAK       3
550 
 
551 
 
552 
typedef struct {
553 
  unsigned int xKeycode;
554 
  int pcNumMake;
555 
  Byte pcKeyMake[MAX_MAKE];
556 
  int pcNumBreak;
557 
  Byte pcKeyBreak[MAX_BREAK];
558 
} Keycode;
559 
 
560 
 
561 
static Keycode kbdCodeTbl[] = {
562 
  { 0x09, 1, { 0x76, 0x00 }, 2, { 0xF0, 0x76, 0x00 } },
563 
  { 0x43, 1, { 0x05, 0x00 }, 2, { 0xF0, 0x05, 0x00 } },
564 
  { 0x44, 1, { 0x06, 0x00 }, 2, { 0xF0, 0x06, 0x00 } },
565 
  { 0x45, 1, { 0x04, 0x00 }, 2, { 0xF0, 0x04, 0x00 } },
566 
  { 0x46, 1, { 0x0C, 0x00 }, 2, { 0xF0, 0x0C, 0x00 } },
567 
  { 0x47, 1, { 0x03, 0x00 }, 2, { 0xF0, 0x03, 0x00 } },
568 
  { 0x48, 1, { 0x0B, 0x00 }, 2, { 0xF0, 0x0B, 0x00 } },
569 
  { 0x49, 1, { 0x83, 0x00 }, 2, { 0xF0, 0x83, 0x00 } },
570 
  { 0x4A, 1, { 0x0A, 0x00 }, 2, { 0xF0, 0x0A, 0x00 } },
571 
  { 0x4B, 1, { 0x01, 0x00 }, 2, { 0xF0, 0x01, 0x00 } },
572 
  { 0x4C, 1, { 0x09, 0x00 }, 2, { 0xF0, 0x09, 0x00 } },
573 
  { 0x5F, 1, { 0x78, 0x00 }, 2, { 0xF0, 0x78, 0x00 } },
574 
  { 0x60, 1, { 0x07, 0x00 }, 2, { 0xF0, 0x07, 0x00 } },
575 
  /*------------------------------------------------*/
576 
  { 0x31, 1, { 0x0E, 0x00 }, 2, { 0xF0, 0x0E, 0x00 } },
577 
  { 0x0A, 1, { 0x16, 0x00 }, 2, { 0xF0, 0x16, 0x00 } },
578 
  { 0x0B, 1, { 0x1E, 0x00 }, 2, { 0xF0, 0x1E, 0x00 } },
579 
  { 0x0C, 1, { 0x26, 0x00 }, 2, { 0xF0, 0x26, 0x00 } },
580 
  { 0x0D, 1, { 0x25, 0x00 }, 2, { 0xF0, 0x25, 0x00 } },
581 
  { 0x0E, 1, { 0x2E, 0x00 }, 2, { 0xF0, 0x2E, 0x00 } },
582 
  { 0x0F, 1, { 0x36, 0x00 }, 2, { 0xF0, 0x36, 0x00 } },
583 
  { 0x10, 1, { 0x3D, 0x00 }, 2, { 0xF0, 0x3D, 0x00 } },
584 
  { 0x11, 1, { 0x3E, 0x00 }, 2, { 0xF0, 0x3E, 0x00 } },
585 
  { 0x12, 1, { 0x46, 0x00 }, 2, { 0xF0, 0x46, 0x00 } },
586 
  { 0x13, 1, { 0x45, 0x00 }, 2, { 0xF0, 0x45, 0x00 } },
587 
  { 0x14, 1, { 0x4E, 0x00 }, 2, { 0xF0, 0x4E, 0x00 } },
588 
  { 0x15, 1, { 0x55, 0x00 }, 2, { 0xF0, 0x55, 0x00 } },
589 
  { 0x16, 1, { 0x66, 0x00 }, 2, { 0xF0, 0x66, 0x00 } },
590 
  /*------------------------------------------------*/
591 
  { 0x17, 1, { 0x0D, 0x00 }, 2, { 0xF0, 0x0D, 0x00 } },
592 
  { 0x18, 1, { 0x15, 0x00 }, 2, { 0xF0, 0x15, 0x00 } },
593 
  { 0x19, 1, { 0x1D, 0x00 }, 2, { 0xF0, 0x1D, 0x00 } },
594 
  { 0x1A, 1, { 0x24, 0x00 }, 2, { 0xF0, 0x24, 0x00 } },
595 
  { 0x1B, 1, { 0x2D, 0x00 }, 2, { 0xF0, 0x2D, 0x00 } },
596 
  { 0x1C, 1, { 0x2C, 0x00 }, 2, { 0xF0, 0x2C, 0x00 } },
597 
  { 0x1D, 1, { 0x35, 0x00 }, 2, { 0xF0, 0x35, 0x00 } },
598 
  { 0x1E, 1, { 0x3C, 0x00 }, 2, { 0xF0, 0x3C, 0x00 } },
599 
  { 0x1F, 1, { 0x43, 0x00 }, 2, { 0xF0, 0x43, 0x00 } },
600 
  { 0x20, 1, { 0x44, 0x00 }, 2, { 0xF0, 0x44, 0x00 } },
601 
  { 0x21, 1, { 0x4D, 0x00 }, 2, { 0xF0, 0x4D, 0x00 } },
602 
  { 0x22, 1, { 0x54, 0x00 }, 2, { 0xF0, 0x54, 0x00 } },
603 
  { 0x23, 1, { 0x5B, 0x00 }, 2, { 0xF0, 0x5B, 0x00 } },
604 
  { 0x24, 1, { 0x5A, 0x00 }, 2, { 0xF0, 0x5A, 0x00 } },
605 
  /*------------------------------------------------*/
606 
  { 0x42, 1, { 0x58, 0x00 }, 2, { 0xF0, 0x58, 0x00 } },
607 
  { 0x26, 1, { 0x1C, 0x00 }, 2, { 0xF0, 0x1C, 0x00 } },
608 
  { 0x27, 1, { 0x1B, 0x00 }, 2, { 0xF0, 0x1B, 0x00 } },
609 
  { 0x28, 1, { 0x23, 0x00 }, 2, { 0xF0, 0x23, 0x00 } },
610 
  { 0x29, 1, { 0x2B, 0x00 }, 2, { 0xF0, 0x2B, 0x00 } },
611 
  { 0x2A, 1, { 0x34, 0x00 }, 2, { 0xF0, 0x34, 0x00 } },
612 
  { 0x2B, 1, { 0x33, 0x00 }, 2, { 0xF0, 0x33, 0x00 } },
613 
  { 0x2C, 1, { 0x3B, 0x00 }, 2, { 0xF0, 0x3B, 0x00 } },
614 
  { 0x2D, 1, { 0x42, 0x00 }, 2, { 0xF0, 0x42, 0x00 } },
615 
  { 0x2E, 1, { 0x4B, 0x00 }, 2, { 0xF0, 0x4B, 0x00 } },
616 
  { 0x2F, 1, { 0x4C, 0x00 }, 2, { 0xF0, 0x4C, 0x00 } },
617 
  { 0x30, 1, { 0x52, 0x00 }, 2, { 0xF0, 0x52, 0x00 } },
618 
  { 0x33, 1, { 0x5D, 0x00 }, 2, { 0xF0, 0x5D, 0x00 } },
619 
  /*------------------------------------------------*/
620 
  { 0x32, 1, { 0x12, 0x00 }, 2, { 0xF0, 0x12, 0x00 } },
621 
  { 0x5E, 1, { 0x61, 0x00 }, 2, { 0xF0, 0x61, 0x00 } },
622 
  { 0x34, 1, { 0x1A, 0x00 }, 2, { 0xF0, 0x1A, 0x00 } },
623 
  { 0x35, 1, { 0x22, 0x00 }, 2, { 0xF0, 0x22, 0x00 } },
624 
  { 0x36, 1, { 0x21, 0x00 }, 2, { 0xF0, 0x21, 0x00 } },
625 
  { 0x37, 1, { 0x2A, 0x00 }, 2, { 0xF0, 0x2A, 0x00 } },
626 
  { 0x38, 1, { 0x32, 0x00 }, 2, { 0xF0, 0x32, 0x00 } },
627 
  { 0x39, 1, { 0x31, 0x00 }, 2, { 0xF0, 0x31, 0x00 } },
628 
  { 0x3A, 1, { 0x3A, 0x00 }, 2, { 0xF0, 0x3A, 0x00 } },
629 
  { 0x3B, 1, { 0x41, 0x00 }, 2, { 0xF0, 0x41, 0x00 } },
630 
  { 0x3C, 1, { 0x49, 0x00 }, 2, { 0xF0, 0x49, 0x00 } },
631 
  { 0x3D, 1, { 0x4A, 0x00 }, 2, { 0xF0, 0x4A, 0x00 } },
632 
  { 0x3E, 1, { 0x59, 0x00 }, 2, { 0xF0, 0x59, 0x00 } },
633 
  /*------------------------------------------------*/
634 
  { 0x25, 1, { 0x14, 0x00 }, 2, { 0xF0, 0x14, 0x00 } },
635 
  { 0x73, 2, { 0xE0, 0x1F }, 3, { 0xE0, 0xF0, 0x1F } },
636 
  { 0x40, 1, { 0x11, 0x00 }, 2, { 0xF0, 0x11, 0x00 } },
637 
  { 0x41, 1, { 0x29, 0x00 }, 2, { 0xF0, 0x29, 0x00 } },
638 
  { 0x71, 2, { 0xE0, 0x11 }, 3, { 0xE0, 0xF0, 0x11 } },
639 
  { 0x74, 2, { 0xE0, 0x27 }, 3, { 0xE0, 0xF0, 0x27 } },
640 
  { 0x75, 2, { 0xE0, 0x2F }, 3, { 0xE0, 0xF0, 0x2F } },
641 
  { 0x6D, 2, { 0xE0, 0x14 }, 3, { 0xE0, 0xF0, 0x14 } },
642 
  /*------------------------------------------------*/
643 
  { 0x6A, 2, { 0xE0, 0x70 }, 3, { 0xE0, 0xF0, 0x70 } },
644 
  { 0x61, 2, { 0xE0, 0x6C }, 3, { 0xE0, 0xF0, 0x6C } },
645 
  { 0x63, 2, { 0xE0, 0x7D }, 3, { 0xE0, 0xF0, 0x7D } },
646 
  { 0x6B, 2, { 0xE0, 0x71 }, 3, { 0xE0, 0xF0, 0x71 } },
647 
  { 0x67, 2, { 0xE0, 0x69 }, 3, { 0xE0, 0xF0, 0x69 } },
648 
  { 0x69, 2, { 0xE0, 0x7A }, 3, { 0xE0, 0xF0, 0x7A } },
649 
  { 0x62, 2, { 0xE0, 0x75 }, 3, { 0xE0, 0xF0, 0x75 } },
650 
  { 0x64, 2, { 0xE0, 0x6B }, 3, { 0xE0, 0xF0, 0x6B } },
651 
  { 0x68, 2, { 0xE0, 0x72 }, 3, { 0xE0, 0xF0, 0x72 } },
652 
  { 0x66, 2, { 0xE0, 0x74 }, 3, { 0xE0, 0xF0, 0x74 } },
653 
  /*------------------------------------------------*/
654 
  { 0x4D, 1, { 0x77, 0x00 }, 2, { 0xF0, 0x77, 0x00 } },
655 
  { 0x70, 2, { 0xE0, 0x4A }, 3, { 0xE0, 0xF0, 0x4A } },
656 
  { 0x3F, 1, { 0x7C, 0x00 }, 2, { 0xF0, 0x7C, 0x00 } },
657 
  { 0x52, 1, { 0x7B, 0x00 }, 2, { 0xF0, 0x7B, 0x00 } },
658 
  { 0x4F, 1, { 0x6C, 0x00 }, 2, { 0xF0, 0x6C, 0x00 } },
659 
  { 0x50, 1, { 0x75, 0x00 }, 2, { 0xF0, 0x75, 0x00 } },
660 
  { 0x51, 1, { 0x7D, 0x00 }, 2, { 0xF0, 0x7D, 0x00 } },
661 
  { 0x56, 1, { 0x79, 0x00 }, 2, { 0xF0, 0x79, 0x00 } },
662 
  { 0x53, 1, { 0x6B, 0x00 }, 2, { 0xF0, 0x6B, 0x00 } },
663 
  { 0x54, 1, { 0x73, 0x00 }, 2, { 0xF0, 0x73, 0x00 } },
664 
  { 0x55, 1, { 0x74, 0x00 }, 2, { 0xF0, 0x74, 0x00 } },
665 
  { 0x57, 1, { 0x69, 0x00 }, 2, { 0xF0, 0x69, 0x00 } },
666 
  { 0x58, 1, { 0x72, 0x00 }, 2, { 0xF0, 0x72, 0x00 } },
667 
  { 0x59, 1, { 0x7A, 0x00 }, 2, { 0xF0, 0x7A, 0x00 } },
668 
  { 0x6C, 2, { 0xE0, 0x5A }, 3, { 0xE0, 0xF0, 0x5A } },
669 
  { 0x5A, 1, { 0x70, 0x00 }, 2, { 0xF0, 0x70, 0x00 } },
670 
  { 0x5B, 1, { 0x71, 0x00 }, 2, { 0xF0, 0x71, 0x00 } },
671 
};
672 
 
673 
 
674 
static int keycodeCompare(const void *code1, const void *code2) {
675 
  return ((Keycode *) code1)->xKeycode - ((Keycode *) code2)->xKeycode;
676 
}
677 
 
678 
 
679 
static void initKeycode(void) {
680 
  qsort(kbdCodeTbl, sizeof(kbdCodeTbl)/sizeof(kbdCodeTbl[0]),
681 
        sizeof(kbdCodeTbl[0]), keycodeCompare);
682 
}
683 
 
684 
 
685 
static Keycode *lookupKeycode(unsigned int xKeycode) {
686 
  int lo, hi, tst;
687 
  int res;
688 
 
689 
  lo = 0;
690 
  hi = sizeof(kbdCodeTbl) / sizeof(kbdCodeTbl[0]) - 1;
691 
  while (lo <= hi) {
692 
    tst = (lo + hi) / 2;
693 
    res = kbdCodeTbl[tst].xKeycode - xKeycode;
694 
    if (res == 0) {
695 
      return &kbdCodeTbl[tst];
696 
    }
697 
    if (res < 0) {
698 
      lo = tst + 1;
699 
    } else {
700 
      hi = tst - 1;
701 
    }
702 
  }
703 
  return NULL;
704 
}
705 
 
706 
 
707 
/**************************************************************/
708 
 
709 
 
710 
#define KBD_BUF_MAX             100
711 
#define KBD_BUF_NEXT(p)         (((p) + 1) % KBD_BUF_MAX)
712 
 
713 
 
714 
static Byte kbdBuf[KBD_BUF_MAX];
715 
static int kbdBufWritePtr;
716 
static int kbdBufReadPtr;
717 
 
718 
 
719 
static void kbdBufInit(void) {
720 
  initKeycode();
721 
  kbdBufWritePtr = 0;
722 
  kbdBufReadPtr = 0;
723 
}
724 
 
725 
 
726 
static int kbdBufFree(void) {
727 
  if (kbdBufReadPtr <= kbdBufWritePtr) {
728 
    return KBD_BUF_MAX - (kbdBufWritePtr - kbdBufReadPtr) - 1;
729 
  } else {
730 
    return (kbdBufReadPtr - kbdBufWritePtr) - 1;
731 
  }
732 
}
733 
 
734 
 
735 
static void keyPressed(unsigned int xKeycode) {
736 
  Keycode *p;
737 
  int i;
738 
 
739 
  if (debugKeycode) {
740 
    cPrintf("**** KEY PRESSED: 0x%08X ****\n", xKeycode);
741 
  }
742 
  p = lookupKeycode(xKeycode);
743 
  if (p == NULL) {
744 
    /* keycode not found */
745 
    return;
746 
  }
747 
  if (kbdBufFree() < (MAX_MAKE + MAX_BREAK) * 4) {
748 
    /* buffer full */
749 
    return;
750 
  }
751 
  for (i = 0; i < p->pcNumMake; i++) {
752 
    kbdBuf[kbdBufWritePtr] = p->pcKeyMake[i];
753 
    kbdBufWritePtr = KBD_BUF_NEXT(kbdBufWritePtr);
754 
  }
755 
}
756 
 
757 
 
758 
static void keyReleased(unsigned int xKeycode) {
759 
  Keycode *p;
760 
  int i;
761 
 
762 
  if (debugKeycode) {
763 
    cPrintf("**** KEY RELEASED: 0x%08X ****\n", xKeycode);
764 
  }
765 
  p = lookupKeycode(xKeycode);
766 
  if (p == NULL) {
767 
    /* keycode not found */
768 
    return;
769 
  }
770 
  if (kbdBufFree() < MAX_BREAK * 4) {
771 
    /* buffer full */
772 
    return;
773 
  }
774 
  for (i = 0; i < p->pcNumBreak; i++) {
775 
    kbdBuf[kbdBufWritePtr] = p->pcKeyBreak[i];
776 
    kbdBufWritePtr = KBD_BUF_NEXT(kbdBufWritePtr);
777 
  }
778 
}
779 
 
780 
 
781 
/**************************************************************/
782 
 
783 
 
784 
static Word kbdCtrl;
785 
static Word kbdData;
786 
 
787 
 
788 
static void kbdCallback(int dev) {
789 
  if (debug) {
790 
    cPrintf("\n**** KEYBOARD CALLBACK ****\n");
791 
  }
792 25 hellwig 
  timerStart(KEYBOARD_USEC, kbdCallback, dev);
793 8 hellwig 
  if (kbdBufWritePtr == kbdBufReadPtr) {
794 
    /* no character ready */
795 
    return;
796 
  }
797 
  /* any character typed */
798 
  kbdData = kbdBuf[kbdBufReadPtr];
799 
  kbdBufReadPtr = KBD_BUF_NEXT(kbdBufReadPtr);
800 
  kbdCtrl |= KEYBOARD_RDY;
801 
  if (kbdCtrl & KEYBOARD_IEN) {
802 
    /* raise keyboard interrupt */
803 
    cpuSetInterrupt(IRQ_KEYBOARD);
804 
  }
805 
}
806 
 
807 
 
808 
Word keyboardRead(Word addr) {
809 
  Word data;
810 
 
811 
  if (debug) {
812 
    cPrintf("\n**** KEYBOARD READ from 0x%08X", addr);
813 
  }
814 
  if (!installed) {
815 
    throwException(EXC_BUS_TIMEOUT);
816 
  }
817 
  if (addr == KEYBOARD_CTRL) {
818 
    data = kbdCtrl;
819 
  } else
820 
  if (addr == KEYBOARD_DATA) {
821 
    kbdCtrl &= ~KEYBOARD_RDY;
822 
    if (kbdCtrl & KEYBOARD_IEN) {
823 
      /* lower keyboard interrupt */
824 
      cpuResetInterrupt(IRQ_KEYBOARD);
825 
    }
826 
    data = kbdData;
827 
  } else {
828 
    /* illegal register */
829 
    throwException(EXC_BUS_TIMEOUT);
830 
  }
831 
  if (debug) {
832 
    cPrintf(", data = 0x%08X ****\n", data);
833 
  }
834 
  return data;
835 
}
836 
 
837 
 
838 
void keyboardWrite(Word addr, Word data) {
839 
  if (debug) {
840 
    cPrintf("\n**** KEYBOARD WRITE to 0x%08X, data = 0x%08X ****\n",
841 
            addr, data);
842 
  }
843 
  if (!installed) {
844 
    throwException(EXC_BUS_TIMEOUT);
845 
  }
846 
  if (addr == KEYBOARD_CTRL) {
847 
    if (data & KEYBOARD_IEN) {
848 
      kbdCtrl |= KEYBOARD_IEN;
849 
    } else {
850 
      kbdCtrl &= ~KEYBOARD_IEN;
851 
    }
852 
    if (data & KEYBOARD_RDY) {
853 
      kbdCtrl |= KEYBOARD_RDY;
854 
    } else {
855 
      kbdCtrl &= ~KEYBOARD_RDY;
856 
    }
857 
    if ((kbdCtrl & KEYBOARD_IEN) != 0 &&
858 
        (kbdCtrl & KEYBOARD_RDY) != 0) {
859 
      /* raise keyboard interrupt */
860 
      cpuSetInterrupt(IRQ_KEYBOARD);
861 
    } else {
862 
      /* lower keyboard interrupt */
863 
      cpuResetInterrupt(IRQ_KEYBOARD);
864 
    }
865 
  } else
866 
  if (addr == KEYBOARD_DATA) {
867 
    /* this register is read-only */
868 
    throwException(EXC_BUS_TIMEOUT);
869 
  } else {
870 
    /* illegal register */
871 
    throwException(EXC_BUS_TIMEOUT);
872 
  }
873 
}
874 
 
875 
 
876 
void keyboardReset(void) {
877 
  if (!installed) {
878 
    return;
879 
  }
880 
  cPrintf("Resetting Keyboard...\n");
881 
  kbdBufInit();
882 
  kbdCtrl = 0;
883 
  kbdData = 0;
884 25 hellwig 
  timerStart(KEYBOARD_USEC, kbdCallback, 0);
885 8 hellwig 
}
886 
 
887 
 
888 
void keyboardInit(void) {
889 
  if (!installed) {
890 
    vgaInit();
891 
  }
892 
  keyboardReset();
893 
}
894 
 
895 
 
896 
void keyboardExit(void) {
897 
  if (!installed) {
898 
    return;
899 
  }
900 
  vgaExit();
901 
}

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