Mercurial > hg > Members > kono > os9 > sbc09
annotate io.c @ 3:831ac057ea86
before mmu
| author | Shinji KONO <kono@ie.u-ryukyu.ac.jp> |
|---|---|
| date | Wed, 04 Jul 2018 14:03:56 +0900 |
| parents | 31d96e2b364e |
| children | 6159cc57d44e |
| rev | line source |
|---|---|
| 0 | 1 /* 6809 Simulator V09. |
| 2 | |
| 3 created 1993,1994 by L.C. Benschop. | |
| 4 copyleft (c) 1994-2014 by the sbc09 team, see AUTHORS for more details. | |
| 5 license: GNU General Public License version 2, see LICENSE for more details. | |
| 6 | |
| 7 This program simulates a 6809 processor. | |
| 8 | |
| 9 System dependencies: short must be 16 bits. | |
| 10 char must be 8 bits. | |
| 11 long must be more than 16 bits. | |
| 12 arrays up to 65536 bytes must be supported. | |
| 13 machine must be twos complement. | |
| 14 Most Unix machines will work. For MSODS you need long pointers | |
| 15 and you may have to malloc() the mem array of 65536 bytes. | |
| 16 | |
| 17 Define BIG_ENDIAN if you have a big-endian machine (680x0 etc) | |
| 18 | |
| 19 Special instructions: | |
| 20 SWI2 writes char to stdout from register B. | |
| 21 SWI3 reads char from stdout to register B, sets carry at EOF. | |
| 22 (or when no key available when using term control). | |
| 23 SWI retains its normal function. | |
| 24 CWAI and SYNC stop simulator. | |
| 25 | |
| 26 */ | |
| 27 | |
| 28 #include<stdio.h> | |
| 29 #include<stdlib.h> | |
| 30 #include<ctype.h> | |
| 31 #include<signal.h> | |
| 32 #include<sys/time.h> | |
| 33 | |
| 34 #include <unistd.h> | |
| 35 #include <fcntl.h> | |
| 36 #include <string.h> | |
| 1 | 37 #include <time.h> |
| 0 | 38 |
| 39 #ifdef USE_TERMIOS | |
| 40 #include <termios.h> | |
| 41 #endif | |
| 42 | |
| 43 #define engine extern | |
| 44 #include "v09.h" | |
| 45 | |
| 1 | 46 /* |
| 3 | 47 * IO Map ( can be overrupped by ROM ) |
| 48 * | |
| 49 * IOPAGE ~ IOPAGE+0xff | |
| 1 | 50 * |
| 3 | 51 * IOPAGE + 0x00 ACIA control |
| 52 * IOPAGE + 0x01 ACIA data | |
| 1 | 53 * |
| 3 | 54 * IOPAGE + 0x10 Timer control 0x8f start timer/0x80 stop timer/0x04 update date |
| 55 * IOPAGE + 0x11- YY/MM/DD/HH/MM/SS | |
| 1 | 56 * |
| 3 | 57 * IOPAGE + 0x20 Disk control 0x81 read/0x55 write 0 ... ok / 0xff .. error |
| 58 * IOPAGE + 0x21 drive no | |
| 59 * IOPAGE + 0x22 LSN2 | |
| 60 * IOPAGE + 0x23 LSN1 | |
| 61 * IOPAGE + 0x24 LSN0 | |
| 62 * IOPAGE + 0x25 ADR2 | |
| 63 * IOPAGE + 0x26 ADR1 | |
| 1 | 64 * |
| 3 | 65 * IOPAGE + 0x91 MMU Taskreg 0 system map, 1 user map |
| 66 * IOPAGE + 0xa0-0xa7 MMU reg system map | |
| 67 * IOPAGE + 0xa8-0xaf MMU reg user map | |
| 68 * | |
| 69 * on reset tr==0 and only IOPAGE is valid | |
| 70 * translatation occur only on non-IOPAGE | |
| 71 * mem == phymem + 0x70000 | |
| 72 * phy addr = phymem[ ( mmu[ adr >> 13 ] <<13 ) + (adr & 0x1fff ) ] | |
| 73 * tr=0 mmu=IOPAGE+0xa0 | |
| 74 * tr=1 mmu=IOPAGE+0xa8 | |
| 1 | 75 * |
| 76 */ | |
| 77 | |
| 78 #define SECSIZE 256 | |
| 79 | |
| 0 | 80 int tflags; |
| 81 int timer = 1; | |
| 82 struct termios termsetting; | |
| 83 | |
| 84 int xmstat; /* 0= no XMODEM transfer, 1=send, 2=receiver */ | |
| 85 unsigned char xmbuf[132]; | |
| 86 int xidx; | |
| 87 int acknak; | |
| 88 int rcvdnak; | |
| 89 int blocknum; | |
| 90 | |
| 91 FILE *logfile; | |
| 92 FILE *infile; | |
| 93 FILE *xfile; | |
| 1 | 94 FILE *disk[] = {0,0}; |
| 0 | 95 |
| 96 extern void hexadump( unsigned char *b, int l, int loc, int w); | |
| 97 extern void disasm(int,int); | |
| 98 | |
| 1 | 99 void do_timer(int,int); |
| 100 void do_disk(int,int); | |
| 0 | 101 |
| 102 int char_input(void) { | |
| 103 int c, w, sum; | |
| 104 if (!xmstat) { | |
| 105 if (infile) { | |
| 106 c = getc(infile); | |
| 107 if (c == EOF) { | |
| 108 fclose(infile); | |
| 109 infile = 0; | |
| 110 return char_input(); | |
| 111 } | |
| 112 if (c == '\n') | |
| 113 c = '\r'; | |
| 114 return c; | |
|
2
31d96e2b364e
add virtual hd option to v09
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents:
1
diff
changeset
|
115 } else { |
|
31d96e2b364e
add virtual hd option to v09
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents:
1
diff
changeset
|
116 usleep(100); |
| 0 | 117 return getchar(); |
|
2
31d96e2b364e
add virtual hd option to v09
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents:
1
diff
changeset
|
118 } |
| 0 | 119 } else if (xmstat == 1) { |
| 120 if (xidx) { | |
| 121 c = xmbuf[xidx++]; | |
| 122 if (xidx == 132) { | |
| 123 xidx = 0; | |
| 124 rcvdnak = EOF; | |
| 125 acknak = 6; | |
| 126 } | |
| 127 } else { | |
| 128 if ((acknak == 21 && rcvdnak == 21) || (acknak == 6 && rcvdnak == 6)) { | |
| 129 rcvdnak = 0; | |
| 130 memset(xmbuf, 0, 132); | |
| 131 w = fread(xmbuf + 3, 1, 128, xfile); | |
| 132 if (w) { | |
| 133 printf("Block %3d transmitted, ", blocknum); | |
| 134 xmbuf[0] = 1; | |
| 135 xmbuf[1] = blocknum; | |
| 136 xmbuf[2] = 255 - blocknum; | |
| 137 blocknum = (blocknum + 1) & 255; | |
| 138 sum = 0; | |
| 139 for (w = 3; w < 131; w++) | |
| 140 sum = (sum + xmbuf[w]) & 255; | |
| 141 xmbuf[131] = sum; | |
| 142 acknak = 6; | |
| 143 c = 1; | |
| 144 xidx = 1; | |
| 145 } else { | |
| 146 printf("EOT transmitted, "); | |
| 147 acknak = 4; | |
| 148 c = 4; | |
| 149 } | |
| 150 } else if (rcvdnak == 21) { | |
| 151 rcvdnak = 0; | |
| 152 printf("Block %3d retransmitted, ", xmbuf[1]); | |
| 153 c = xmbuf[xidx++]; /*retransmit the same block */ | |
| 154 } else | |
| 155 c = EOF; | |
| 156 } | |
| 157 return c; | |
| 158 } else { | |
| 159 if (acknak == 4) { | |
| 160 c = 6; | |
| 161 acknak = 0; | |
| 162 fclose(xfile); | |
| 163 xfile = 0; | |
| 164 xmstat = 0; | |
| 165 } else if (acknak) { | |
| 166 c = acknak; | |
| 167 acknak = 0; | |
| 168 } else | |
| 169 c = EOF; | |
| 170 if (c == 6) | |
| 171 printf("ACK\n"); | |
| 172 if (c == 21) | |
| 173 printf("NAK\n"); | |
| 174 return c; | |
| 175 } | |
| 176 } | |
| 177 | |
| 178 int do_input( a) { | |
| 179 static int c, f = EOF; | |
| 180 if (a == 0) { | |
| 181 if (f == EOF) | |
| 182 f = char_input(); | |
| 183 if (f != EOF) | |
| 184 c = f; | |
| 185 return 2 + (f != EOF); | |
| 186 } else if (a == 1) { /*data port*/ | |
| 187 if (f == EOF) | |
| 188 f = char_input(); | |
| 189 if (f != EOF) { | |
| 190 c = f; | |
| 191 f = EOF; | |
| 192 } | |
| 193 return c; | |
| 194 } | |
| 3 | 195 return mem[IOPAGE + a]; |
| 0 | 196 } |
| 197 | |
| 198 void do_output(int a, int c) { | |
| 199 int i, sum; | |
| 200 if (a == 1) { /* ACIA data port,ignore address */ | |
| 201 if (!xmstat) { | |
| 202 if (logfile && c != 127 && (c >= ' ' || c == '\n')) | |
| 203 putc(c, logfile); | |
| 204 putchar(c); | |
| 205 fflush(stdout); | |
| 206 } else if (xmstat == 1) { | |
| 207 rcvdnak = c; | |
| 208 if (c == 6 && acknak == 4) { | |
| 209 fclose(xfile); | |
| 210 xfile = 0; | |
| 211 xmstat = 0; | |
| 212 } | |
| 213 if (c == 6) | |
| 214 printf("ACK\n"); | |
| 215 if (c == 21) | |
| 216 printf("NAK\n"); | |
| 217 if (c == 24) { | |
| 218 printf("CAN\n"); | |
| 219 fclose(xfile); | |
| 220 xmstat = 0; | |
| 221 xfile = 0; | |
| 222 } | |
| 223 } else { | |
| 224 if (xidx == 0 && c == 4) { | |
| 225 acknak = 4; | |
| 226 printf("EOT received, "); | |
| 227 } | |
| 228 xmbuf[xidx++] = c; | |
| 229 if (xidx == 132) { | |
| 230 sum = 0; | |
| 231 for (i = 3; i < 131; i++) | |
| 232 sum = (sum + xmbuf[i]) & 255; | |
| 233 if (xmbuf[0] == 1 && xmbuf[1] == 255 - xmbuf[2] | |
| 234 && sum == xmbuf[131]) | |
| 235 acknak = 6; | |
| 236 else | |
| 237 acknak = 21; | |
| 238 printf("Block %3d received, ", xmbuf[1]); | |
| 239 if (blocknum == xmbuf[1]) { | |
| 240 blocknum = (blocknum + 1) & 255; | |
| 241 fwrite(xmbuf + 3, 1, 128, xfile); | |
| 242 } | |
| 243 xidx = 0; | |
| 244 } | |
| 245 } | |
| 1 | 246 } else if ((a&0xf0) == 0x10) { /* timer */ |
| 247 do_timer(a,c); | |
| 248 } else if ((a&0xf0) == 0x20) { /* disk */ | |
| 249 do_disk(a,c); | |
| 0 | 250 } |
| 251 } | |
| 252 | |
| 253 void restore_term(void) { | |
| 254 tcsetattr(0, TCSAFLUSH, &termsetting); | |
| 255 fcntl(0, F_SETFL, tflags); | |
| 256 signal(SIGALRM, SIG_IGN); | |
| 257 } | |
| 258 | |
| 259 void do_exit(void) { | |
| 260 restore_term(); | |
| 261 exit(0); | |
| 262 } | |
| 263 | |
| 1 | 264 void do_timer(int a, int c) { |
| 265 struct itimerval timercontrol; | |
| 266 if (a==0x10 && c==0x8f) { | |
| 267 timercontrol.it_interval.tv_sec = 0; | |
| 268 timercontrol.it_interval.tv_usec = 20000; | |
| 269 timercontrol.it_value.tv_sec = 0; | |
| 270 timercontrol.it_value.tv_usec = 20000; | |
| 271 setitimer(ITIMER_REAL, &timercontrol, NULL); | |
| 272 } else if (a==0x10 && c==0x80) { | |
| 273 timercontrol.it_interval.tv_sec = 0; | |
| 274 timercontrol.it_interval.tv_usec = 0; | |
| 275 setitimer(ITIMER_REAL, &timercontrol, NULL); | |
| 276 } else if (a==0x10 && c==0x04) { | |
| 277 time_t tm = time(0); | |
| 278 struct tm *t = localtime(&tm); | |
| 279 mem[IOPAGE+0x11] = t->tm_year; | |
| 280 mem[IOPAGE+0x12] = t->tm_mon; | |
| 281 mem[IOPAGE+0x13] = t->tm_mday; | |
| 282 mem[IOPAGE+0x14] = t->tm_hour; | |
| 283 mem[IOPAGE+0x15] = t->tm_min; | |
| 284 mem[IOPAGE+0x16] = t->tm_sec; | |
| 285 } else { | |
| 286 mem[IOPAGE+a]=c; | |
| 287 } | |
| 288 } | |
| 289 | |
| 290 void do_disk(int a, int c) { | |
| 291 if (a!=0x20) { | |
| 292 mem[IOPAGE+a]=c; | |
| 293 return; | |
| 294 } | |
| 295 int drv = mem[IOPAGE+0x21]; | |
| 296 int lsn = (mem[IOPAGE+0x22]<<16) + (mem[IOPAGE+0x23]<<8) + mem[IOPAGE+0x24]; | |
| 297 int buf = (mem[IOPAGE+0x25]<<8) + mem[IOPAGE+0x26]; | |
| 298 if (drv > 1 || disk[drv]==0) goto error; | |
| 299 if (c==0x81) { | |
| 300 if (lseek(fileno(disk[drv]),lsn*SECSIZE,SEEK_SET)==-1) goto error; | |
| 301 if (read(fileno(disk[drv]),&mem[buf],SECSIZE)==-1) goto error; | |
| 302 } else if (c==0x55) { | |
| 303 if (lseek(fileno(disk[drv]),lsn*SECSIZE,SEEK_SET)==-1) goto error; | |
| 304 if (write(fileno(disk[drv]),&mem[buf],SECSIZE)==-1) goto error; | |
| 305 } | |
| 306 mem[IOPAGE+0x20] = 0; | |
| 307 return; | |
| 308 error : | |
| 309 mem[IOPAGE+0x20] = 0xff; | |
| 310 } | |
| 311 | |
| 0 | 312 typedef struct bp { |
| 313 int address; | |
| 314 int count; | |
| 315 struct bp *next; | |
| 316 } BP, *BPTR; | |
| 317 | |
| 318 BPTR breakpoint = 0; | |
| 319 int bpskip = 0; | |
| 320 int trskip = 0; | |
| 321 int stkskip = 0; | |
| 322 | |
| 323 int getarg(char *buf, char** next) { | |
| 324 return strtol(buf,(char**)next,0); | |
| 325 } | |
| 326 | |
| 327 void printhelp(void) | |
| 328 { | |
| 329 printf( | |
| 330 " s [count] one step trace\n" | |
| 331 " n step over\n" | |
| 332 " f finish this call (until stack pop)\n" | |
| 333 " b [adr] set break point\n" | |
| 334 " l break point list\n" | |
| 335 " d [n] delte break point list\n" | |
| 336 " c [count] continue;\n" | |
| 337 " x [adr] dump\n" | |
| 338 " xi [adr] disassemble\n" | |
| 1 | 339 " 0 file disk drive 0 image\n" |
| 340 " 1 file disk drive 1 image\n" | |
| 0 | 341 " L file start log to file\n" |
| 342 " S file set input file\n" | |
| 343 " X exit\n" | |
| 344 " q exit\n" | |
| 345 " U file upload from srecord file \n" | |
| 346 " D file download to srecord file \n" | |
| 347 " R do reset\n" | |
| 348 " h,? print this\n" | |
| 349 ); | |
| 350 } | |
| 351 | |
| 352 void do_escape(void) { | |
| 353 char s[80]; | |
| 354 int adr,skip; | |
| 355 if (bpskip) { // skip unbreak instruction | |
| 356 bpskip--; | |
| 357 for(BPTR b = breakpoint; b ; b=b->next) { | |
| 358 if (pcreg==b->address) { | |
| 359 if (b->count) b->count--; | |
| 360 if (b->count==0) { | |
| 361 goto restart0; | |
| 362 } | |
| 363 } | |
| 364 } | |
| 365 return; | |
| 366 } | |
| 367 if (stkskip) { // skip until return | |
| 368 if (sreg < stkskip ) return; | |
| 369 } | |
| 370 restart0: | |
| 371 stkskip = 0; | |
| 372 restore_term(); | |
| 373 do_trace(stdout); | |
| 374 if (trskip>1) { // show trace and step | |
| 375 trskip--; | |
| 376 set_term(escchar); | |
| 377 return; | |
| 378 } | |
| 379 restart: | |
| 380 printf("v09>"); | |
| 381 fgets(s, 80, stdin); | |
| 382 if (s[0]) | |
| 383 s[strlen(s) - 1] = 0; | |
| 384 switch (s[0]) { | |
| 385 case 's': // one step trace | |
| 386 trskip = 1; | |
| 387 if (s[1]) { | |
| 388 trskip = getarg(s+1,0); | |
| 389 } | |
| 390 bpskip = 0; | |
| 391 attention = escape = 1; | |
| 392 break; | |
| 393 case 'n': // step over | |
| 394 stkskip = sreg; | |
| 395 attention = escape = 1; | |
| 396 break; | |
| 397 case 'f': // finish this call (until stack pop) | |
| 398 stkskip = sreg + 2; | |
| 399 attention = escape = 1; | |
| 400 break; | |
| 401 case 'b': // set break point | |
| 402 { | |
| 403 BPTR bp = calloc(1,sizeof(BP)); | |
| 404 bp->next = breakpoint; | |
| 405 breakpoint = bp; | |
| 406 bp->count = 1; | |
| 407 if (s[1]) { | |
| 408 char *next; | |
| 409 bp->address = getarg(s+1,&next); | |
| 410 if (next[0]) { | |
| 411 bp->count = getarg(next,&next); | |
| 412 } | |
| 413 } else { | |
| 414 bp->address = pcreg; | |
| 415 } | |
| 416 } | |
| 417 bpskip = -1; | |
| 418 goto restart; | |
| 419 case 'l': // break point list | |
| 420 for(BPTR bp = breakpoint; bp ; bp = bp->next) { | |
| 421 printf("%x %i\n", bp->address, bp->count); | |
| 422 } | |
| 423 goto restart; | |
| 424 case 'd': // delte break point list | |
| 425 if (s[1]) { | |
| 426 int trskip = getarg(s+1,0); | |
| 427 BPTR *prev = &breakpoint; | |
| 428 for(BPTR bp = breakpoint; bp ; bp = bp->next) { | |
| 429 if (trskip-- == 0) { | |
| 430 if (bp) { | |
| 431 *prev = bp->next; | |
| 432 } | |
| 433 break; | |
| 434 } | |
| 435 prev = &bp->next; | |
| 436 } | |
| 437 } | |
| 438 goto restart; | |
| 439 case 'c': // continue; | |
| 440 bpskip = -1; | |
| 441 attention = escape = 1; | |
| 442 if (s[1]) { | |
| 443 bpskip = getarg(s+1,0); | |
| 444 } | |
| 445 break; | |
| 446 case 'x': // dump | |
| 447 skip = 1; | |
| 448 if (s[1]=='i') skip=2; | |
| 449 if (s[skip]) { | |
| 450 char *next; | |
| 451 int adr = getarg(s+skip,&next); | |
| 452 int len = 32; | |
| 453 if (next[0]) { | |
| 454 len = getarg(next,&next); | |
| 455 } | |
| 456 if (skip==2) { | |
| 457 disasm(adr,adr+len); | |
| 458 } else { | |
| 459 for(int i=0; len > 0 ; i+=16, len-=16) { | |
| 460 hexadump(mem+adr+i,len>16?16:len,adr+i,16); | |
| 461 } | |
| 462 } | |
| 463 } else | |
| 464 disasm(pcreg,pcreg+32); | |
| 465 goto restart; | |
| 466 case 'L': | |
| 467 if (logfile) | |
| 468 fclose(logfile); | |
| 469 logfile = 0; | |
| 470 if (s[1]) { | |
| 1 | 471 int i=1; while(s[i]==' ') i++; |
| 472 logfile = fopen(s + i, "w"); | |
| 0 | 473 } |
| 474 break; | |
| 475 case 'S': | |
| 476 if (infile) | |
| 477 fclose(infile); | |
| 478 infile = 0; | |
| 479 if (s[1]) { | |
| 1 | 480 int i=1; while(s[i]==' ') i++; |
| 481 infile = fopen(s + i, "r"); | |
| 0 | 482 } |
| 483 break; | |
| 484 case 'h': | |
| 485 case '?': | |
| 486 printhelp(); | |
| 487 goto restart; | |
| 488 case 'X': | |
| 489 case 'q': | |
| 490 if (!xmstat) | |
| 491 do_exit(); | |
| 492 else { | |
| 493 xmstat = 0; | |
| 494 fclose(xfile); | |
| 495 xfile = 0; | |
| 496 } | |
| 497 break; | |
| 1 | 498 case '0': |
| 499 case '1': | |
| 500 { FILE **drv = &disk[ s[0]-'0'] ; | |
| 501 if (*drv) | |
| 502 fclose(*drv); | |
| 503 *drv = 0; | |
| 504 if (s[1]) { | |
| 505 int i=1; while(s[i]==' ') i++; | |
| 506 *drv = fopen(s + i, "r+b"); | |
| 507 if ( *drv == 0 ) { printf("can't open %s\n", &s[i]); } | |
| 508 } | |
| 509 } | |
| 510 break; | |
| 0 | 511 case 'U': |
| 512 if (xfile) | |
| 513 fclose(xfile); | |
| 514 xfile = 0; | |
| 515 if (s[1]) { | |
| 1 | 516 int i=1; while(s[i]==' ') i++; |
| 517 xfile = fopen(s + i, "rb"); | |
| 518 if ( xfile == 0 ) { printf("can't open %s\n", &s[i]); } | |
| 0 | 519 } |
| 520 if (xfile) | |
| 521 xmstat = 1; | |
| 522 else | |
| 523 xmstat = 0; | |
| 524 xidx = 0; | |
| 525 acknak = 21; | |
| 526 rcvdnak = EOF; | |
| 527 blocknum = 1; | |
| 528 break; | |
| 529 case 'D': | |
| 530 if (xfile) | |
| 531 fclose(xfile); | |
| 532 xfile = 0; | |
| 533 if (s[1]) { | |
| 1 | 534 int i=1; while(s[i]==' ') i++; |
| 535 xfile = fopen(s + i, "wb"); | |
| 536 if ( xfile == 0 ) { printf("can't open %s\n", &s[i]); } | |
| 0 | 537 } |
| 538 if (xfile) | |
| 539 xmstat = 2; | |
| 540 else | |
| 541 xmstat = 0; | |
| 542 xidx = 0; | |
| 543 acknak = 21; | |
| 544 blocknum = 1; | |
| 545 break; | |
| 546 case 'R': | |
| 547 pcreg = (mem[0xfffe] << 8) + mem[0xffff]; | |
| 548 break; | |
| 549 } | |
| 550 if (tracing||breakpoint||trskip||bpskip||stkskip) { attention = escape = 1; } | |
| 551 else attention = 0; | |
| 552 set_term(escchar); | |
| 553 } | |
| 554 | |
| 555 void timehandler(int sig) { | |
| 556 attention = 1; | |
| 557 irq = 2; | |
| 558 signal(SIGALRM, timehandler); | |
| 559 } | |
| 560 | |
| 561 void handler(int sig) { | |
| 562 escape = 1; | |
| 563 attention = 1; | |
| 564 bpskip = 0; | |
| 565 stkskip = 0; | |
| 566 } | |
| 567 | |
| 568 void set_term(char c) { | |
| 569 struct termios newterm; | |
| 570 struct itimerval timercontrol; | |
| 571 signal(SIGQUIT, SIG_IGN); | |
| 572 signal(SIGTSTP, SIG_IGN); | |
| 573 signal(SIGINT, handler); | |
| 574 signal(SIGUSR1, handler); | |
| 575 tcgetattr(0, &termsetting); | |
| 576 newterm = termsetting; | |
| 577 newterm.c_iflag = newterm.c_iflag & ~INLCR & ~ICRNL; | |
| 578 newterm.c_lflag = newterm.c_lflag & ~ECHO & ~ICANON; | |
| 579 newterm.c_cc[VTIME] = 0; | |
| 580 newterm.c_cc[VMIN] = 1; | |
| 581 newterm.c_cc[VINTR] = escchar; | |
| 582 tcsetattr(0, TCSAFLUSH, &newterm); | |
| 583 tflags = fcntl(0, F_GETFL, 0); | |
| 584 fcntl(0, F_SETFL, tflags | O_NDELAY); /* Make input from stdin non-blocking */ | |
| 585 signal(SIGALRM, timehandler); | |
| 586 timercontrol.it_interval.tv_sec = 0; | |
| 587 timercontrol.it_interval.tv_usec = 20000; | |
| 588 timercontrol.it_value.tv_sec = 0; | |
| 589 timercontrol.it_value.tv_usec = 20000; | |
| 590 if (timer) | |
| 591 setitimer(ITIMER_REAL, &timercontrol, NULL); | |
| 592 } |