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First Commit of my working state
[simh.git] / Ibm1130 / ibm1130_plot.c
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PH		 1/* ibm1130_plot.c: IBM 1130 1627 plotter emulation\r
2\r
3 Based on the SIMH simulator package written by Robert M Supnik\r
4\r
5 Brian Knittel\r
6 Revision History\r
7\r
8 2004.10.22 - Written.\r
9 2006.1.2 - Rewritten as plotter routine by Carl V Claunch\r
10\r
11 * (C) Copyright 2004, Brian Knittel.\r
12 * You may freely use this program, but: it offered strictly on an AS-IS, AT YOUR OWN\r
13 * RISK basis, there is no warranty of fitness for any purpose, and the rest of the\r
14 * usual yada-yada. Please keep this notice and the copyright in any distributions\r
15 * or modifications.\r
16 *\r
17 * This is not a supported product, but I welcome bug reports and fixes.\r
18 * Mail to simh@ibm1130.org\r
19 */\r
20\r
21#include "ibm1130_defs.h"\r
22\r
23#ifndef ENABLE_PLOT_SUPPORT\r
24\r
25 DEVICE plot_dev = {\r
26 "PLOT", NULL, NULL, NULL,\r
27 0, 16, 16, 1, 16, 16,\r
28 NULL, NULL, NULL,\r
29 NULL, NULL, NULL};\r
30\r
31 void xio_1627_plotter (int32 addr, int32 func, int32 modify)\r
32 {\r
33 /* silently eat any plotter commands */\r
34 }\r
35\r
36#else\r
37\r
38#include "gd.h"\r
39\r
40/***************************************************************************************\r
41 * 1627 model 1 plotter (based on Calcomp 535 which was sold as IBM 1627)\r
42 *\r
43 * - 11" wide carriage, addressible in .01" steps\r
44 * - continous sheet paper up to 120' in length\r
45 * - sheet moveable in .01" steps, either direction\r
46 * - switchable pen, in various colors and line widths\r
47 *\r
48 * Simulator implementation will create a JPEG image corresponding to a \r
49 * landscape mode sheet of paper, the width of the carriage at 11".\r
50 * A diagram of more than 8" of paper travel will span printed pages\r
51 * in landscape mode. \r
52 *\r
53 * When an 'att plot' command is issued a file is created based on the\r
54 * default or currently set values of paper length, starting\r
55 * position of the pen in both X and Y axes, pen color and pen width.\r
56 * Based on the number of logical pages of paper, the command will create\r
57 * the proper size canvas internally and create the output JPEG file.\r
58 * \r
59 * When a 'det plot' command is issued, the plotter image will be converted \r
60 * into the file that was specified during the attach process. The\r
61 * image is not viewable until this point, unless an examine plot is\r
62 * issued which will dump the current state of the paper into the file.\r
63 * \r
64 * The 'set plot' command can set pen width, paper length, pen color,\r
65 * current carriage X and Y coordinates. Paper length can be set\r
66 * to alter the default of 800 (8"); changes are ignored until\r
67 * the next 'attach' command. The current carriage x and y positions\r
68 * can be set at any time and will go into effect immediately, just\r
69 * as the pen color and pen width can be altered on the fly.\r
70 *\r
71 * NOTE: requires gd library and definition of ENABLE_PLOT_SUPPORT in makefile or Visual C configuration\r
72 * gd is not included in the main simh and ibm1130.org distributions at the present time.\r
73 ***************************************************************************************/\r
74\r
75#define PLOT1627_DSW_OP_COMPLETE 0x8000\r
76#define PLOT1627_DSW_BUSY 0x0200\r
77#define PLOT1627_DSW_NOT_READY 0x0100\r
78\r
79#define IS_ONLINE(u) (((u)->flags & (UNIT_ATT|UNIT_DIS)) == UNIT_ATT)\r
80#define IS_DEBUG ((plot_unit->flags & UNIT_DEBUG) == UNIT_DEBUG)\r
81#define IS_PENDOWN ((plot_unit->flags & UNIT_PEN) == UNIT_PEN)\r
82\r
83static t_stat plot_svc (UNIT *uptr); /* activity routine */\r
84static t_stat plot_reset (DEVICE *dptr); /* reset of 1130 */\r
85static t_stat plot_attach (UNIT *uptr, char *cptr); /* attach, loads plotter */\r
86static t_stat plot_detach (UNIT *uptr); /* detach and save image */\r
87static t_stat plot_examine (UNIT *uptr); /* update file with current canvas */\r
88static t_stat plot_set_length (UNIT *uptr, int32 val, char * ptr, void *desc); /* set paper length */\r
89static t_stat plot_set_pos (UNIT *uptr, int32 val, char * ptr, void *desc); /* reset current X/Y position */\r
90static t_stat plot_show_vals(FILE *fp, UNIT *uptr, int32 val, void *descrip); /* print x, y and length */\r
91static t_stat plot_show_nl(FILE *fp, UNIT *uptr, int32 val, void *descrip); /* overcome wacky simh behavior */\r
92static void update_pen(void); /* will ensure pen action is correct when changes made */\r
93static t_stat plot_validate_change (UNIT *uptr, int32 val, char * ptr, void *desc); /* when set command issued */\r
94static void process_cmd(void); /* does actual drawing for plotter */\r
95\r
96extern int32 sim_switches; /* switches set on simh command */\r
97static int16 plot_dsw = 0; /* device status word */\r
98static int16 plot_cmd = 0; /* the command to process */\r
99static int32 plot_wait = 1000; /* plotter movement wait */\r
100static int32 plot_xpos = 0; /* current X position */\r
101static int32 plot_xmax = 799; /* end of paper */\r
102static int32 plot_ypos = 0; /* current Y position */\r
103static int32 plot_ymax = 1099; /* right edge of carriage */\r
104\r
105#define PEN_DOWN 0x80000000\r
106#define PEN_UP 0x00000000\r
107static int32 plot_pen = PEN_UP; /* current pen position */\r
108\r
109static int black_pen; /* holds color black */\r
110static int blue_pen; /* holds color blue */\r
111static int red_pen; /* holds color red */\r
112static int green_pen; /* holds color green */\r
113static int yellow_pen; /* holds yellow color */\r
114static int purple_pen; /* holds color purple */\r
115static int ltgrey_pen; /* holds light grey */\r
116static int grey_pen; /* holds grey */\r
117static int white_background; /* holds white of paper roll */\r
118static int plot_pwidth; /* set and display variable */\r
119static int plot_pcolor; /* set and display variable */\r
120static int need_update = 0; /* flag to force and update_pen() */\r
121static gdImagePtr image; /* pointer to our canvas */\r
122\r
123#define UNIT_V_COLOR (UNIT_V_UF + 0) /* color of selected pen - 3 bits */\r
124#define UNIT_V_WIDTH (UNIT_V_UF + 3) /* width of pen - two bits */\r
125#define UNIT_V_NOOP (UNIT_V_UF + 5) /* dummy for set/show commands */\r
126#define UNIT_V_DEBUG (UNIT_V_UF + 6) /* for -d switch on attach command */\r
127#define UNIT_V_PEN (UNIT_V_UF + 7) /* track pen state */\r
128\r
129#define UNIT_WIDTH (3u << UNIT_V_WIDTH) /* two bits */\r
130#define UNIT_COLOR (7u << UNIT_V_COLOR) /* three bits */\r
131#define UNIT_NOOP (1u << UNIT_V_NOOP) /* dummy for set/show */\r
132#define UNIT_DEBUG (1u << UNIT_V_DEBUG) /* shows debug mode on */\r
133#define UNIT_PEN (1u << UNIT_V_PEN) /* the pen state bit */\r
134\r
135#define PEN_BLACK (0u << UNIT_V_COLOR)\r
136#define PEN_RED (1u << UNIT_V_COLOR)\r
137#define PEN_BLUE (2u << UNIT_V_COLOR)\r
138#define PEN_GREEN (3u << UNIT_V_COLOR)\r
139#define PEN_YELLOW (4u << UNIT_V_COLOR)\r
140#define PEN_PURPLE (5u << UNIT_V_COLOR)\r
141#define PEN_LTGREY (6u << UNIT_V_COLOR)\r
142#define PEN_GREY (7u << UNIT_V_COLOR)\r
143\r
144#define SET_COLOR(op) {plot_unit[0].flags &= ~UNIT_COLOR; plot_unit[0].flags |= (op);}\r
145#define GET_COLOR (plot_unit[0].flags & UNIT_COLOR)\r
146\r
147#define BLACK 0,0,0\r
148#define BLUE 0,0,255\r
149#define RED 255,0,0\r
150#define GREEN 0,255,0\r
151#define YELLOW 200,200,0\r
152#define PURPLE 150,0,150\r
153#define LTGREY 200,200,200\r
154#define GREY 120,120,120\r
155#define WHITE 255,255,255\r
156\r
157#define PEN_SINGLE (0u << UNIT_V_WIDTH)\r
158#define PEN_DOUBLE (1u << UNIT_V_WIDTH)\r
159#define PEN_TRIPLE (2u << UNIT_V_WIDTH)\r
160#define PEN_QUAD (3u << UNIT_V_WIDTH)\r
161\r
162#define GET_WIDTH() (plot_unit[0].flags & UNIT_WIDTH)\r
163#define SET_WIDTH(cd) {plot_unit[0].flags &= ~UNIT_WIDTH; un.flags |= (cd);}\r
164\r
165UNIT plot_unit[] = {\r
166 { UDATA (&plot_svc, UNIT_ATTABLE, 0) },\r
167};\r
168\r
169REG plot_reg[] = {\r
170 { HRDATA (DSW, plot_dsw, 16) }, /* device status word */\r
171 { DRDATA (WTIME, plot_wait, 24), PV_LEFT }, /* plotter movement wait */\r
172 { DRDATA (Xpos, plot_xpos, 32), PV_LEFT }, /* Current X Position*/\r
173 { DRDATA (Ypos, plot_ypos, 32), PV_LEFT }, /* Current Y Position*/\r
174 { FLDATA (PenDown, plot_pen, 0)}, /* Current pen position - 1 = down */\r
175 { DRDATA (PaperSize, plot_xmax, 32), PV_LEFT }, /* Length of paper in inches */\r
176 { NULL } };\r
177\r
178MTAB plot_mod[] = {\r
179 { UNIT_COLOR, PEN_BLACK, "black", "BLACK", &plot_validate_change},\r
180 { UNIT_COLOR, PEN_RED, "red", "RED", &plot_validate_change},\r
181 { UNIT_COLOR, PEN_BLUE, "blue", "BLUE", &plot_validate_change},\r
182 { UNIT_COLOR, PEN_GREEN, "green", "GREEN", &plot_validate_change},\r
183 { UNIT_COLOR, PEN_YELLOW, "yellow", "YELLOW", &plot_validate_change},\r
184 { UNIT_COLOR, PEN_PURPLE, "purple", "PURPLE", &plot_validate_change},\r
185 { UNIT_COLOR, PEN_LTGREY, "ltgrey", "LTGREY", &plot_validate_change},\r
186 { UNIT_COLOR, PEN_GREY, "grey", "GREY", &plot_validate_change},\r
187 { UNIT_WIDTH, PEN_SINGLE, "1.0", "1.0", &plot_validate_change},\r
188 { UNIT_WIDTH, PEN_DOUBLE, "2.0", "2.0", &plot_validate_change},\r
189 { UNIT_WIDTH, PEN_TRIPLE, "3.0", "3.0", &plot_validate_change},\r
190 { UNIT_WIDTH, PEN_QUAD, "4.0", "4.0", &plot_validate_change},\r
191 { UNIT_PEN, UNIT_PEN, "pendown", "PENDOWN", &plot_validate_change},\r
192 { UNIT_PEN, 0, "penup", "PENUP", &plot_validate_change},\r
193 /* below is dummy entry to trigger the show routine and print extended values */\r
194 { UNIT_NOOP, 0, "", NULL, NULL, &plot_show_vals},\r
195 /* extended entries must allow parm for both unit and dev, but\r
196 * then they will print the value twice for a 'show plot' command\r
197 * therefore they are set to not display unless explicity requested\r
198 * and the special dummy NOOP entry will cause the print of these values */\r
199 { MTAB_XTD | MTAB_VAL | MTAB_VUN | MTAB_VDV | MTAB_NMO, 2,\r
200 "length", "LENGTH", &plot_set_length, &plot_show_nl, &plot_reg[5]},\r
201 { MTAB_XTD | MTAB_VAL | MTAB_VDV | MTAB_VUN | MTAB_NMO, 0,\r
202 "Xpos", "XPOS", &plot_set_pos, &plot_show_nl, &plot_reg[2]},\r
203 { MTAB_XTD | MTAB_VAL | MTAB_VDV | MTAB_VUN | MTAB_NMO, 1,\r
204 "Ypos", "YPOS", &plot_set_pos, &plot_show_nl, &plot_reg[3]},\r
205 { 0 } };\r
206\r
207DEVICE plot_dev = {\r
208 "PLOT", plot_unit, plot_reg, plot_mod,\r
209 1, 16, 16, 1, 16, 16,\r
210 NULL, NULL, plot_reset,\r
211 NULL, plot_attach, plot_detach};\r
212\r
213/* xio_1627_plotter - XIO command interpreter for the 1627 plotter model 1 */\r
214\r
215void xio_1627_plotter (iocc_addr, iocc_func, iocc_mod)\r
216{\r
217 char msg[80];\r
218\r
219 if (! IS_ONLINE(plot_unit) ) {\r
220 SETBIT(plot_dsw, PLOT1627_DSW_NOT_READY); /* set not ready */\r
221 if (IS_DEBUG) printf("Plotter has no paper, ignored\n");\r
222 return; /* and ignore */\r
223 }\r
224\r
225 switch (iocc_func) {\r
226 case XIO_READ: /* read XIO */\r
227 xio_error("Read XIO not supported by 1627 plotter");\r
228 break;\r
229\r
230 case XIO_WRITE: /* write: do one plotter operation */\r
231 if ((plot_dsw & PLOT1627_DSW_NOT_READY)) {\r
232 if (IS_DEBUG) printf("Wrote to non-ready Plotter\n");\r
233 break;\r
234 }\r
235 plot_cmd = (uint16) ( M[iocc_addr & mem_mask] >> 10 ); /* pick up command */\r
236 process_cmd(); /* interpret command */\r
237 sim_activate(plot_unit, plot_wait); /* schedule interrupt */\r
238 SETBIT(plot_dsw, PLOT1627_DSW_BUSY); /* mark it busy */\r
239 break;\r
240\r
241 case XIO_SENSE_DEV: /* sense device status */\r
242 ACC = plot_dsw; /* get current status */\r
243 if (iocc_mod & 0x01) { /* reset interrupts */\r
244 CLRBIT(plot_dsw, PLOT1627_DSW_OP_COMPLETE); \r
245 CLRBIT(ILSW[3], ILSW_3_1627_PLOTTER);\r
246 }\r
247 break;\r
248\r
249 case XIO_CONTROL: /* control XIO */\r
250 xio_error("Control XIO not supported by 1627 plotter");\r
251 break;\r
252\r
253 default:\r
254 sprintf(msg, "Invalid 1627 Plotter XIO function %x", iocc_func);\r
255 xio_error(msg);\r
256 }\r
257 return;\r
258}\r
259\r
260// plot_svc - 1627 plotter operation complete\r
261\r
262static t_stat plot_svc (UNIT *uptr)\r
263{\r
264 CLRBIT(plot_dsw, PLOT1627_DSW_BUSY); /* clear reader busy flag */\r
265\r
266 SETBIT(plot_dsw, PLOT1627_DSW_OP_COMPLETE); /* indicate read complete */\r
267\r
268 SETBIT(ILSW[3], ILSW_3_1627_PLOTTER); /* initiate interrupt */\r
269 calc_ints();\r
270\r
271 return SCPE_OK;\r
272}\r
273\r
274/* plot_reset - reset emulated plotter */\r
275\r
276static t_stat plot_reset (DEVICE *dptr)\r
277{\r
278 char * buf;\r
279 int32 size;\r
280\r
281 sim_cancel(plot_unit);\r
282\r
283 CLRBIT(plot_dsw, PLOT1627_DSW_BUSY | PLOT1627_DSW_OP_COMPLETE);\r
284\r
285 if (IS_DEBUG) printf("reset routine for Plotter\n");\r
286\r
287 CLRBIT(ILSW[3], ILSW_3_1627_PLOTTER);\r
288 calc_ints();\r
289\r
290 return SCPE_OK;\r
291}\r
292\r
293\r
294/* plot_attach - attach file to simulated plotter */\r
295\r
296static t_stat plot_attach (UNIT *uptr, char *cptr)\r
297{\r
298 t_stat result;\r
299\r
300 CLRBIT(uptr->flags, UNIT_DEBUG);\r
301 if (sim_switches & SWMASK('D')) SETBIT(uptr->flags, UNIT_DEBUG);\r
302\r
303 /* get the output file by using regular attach routine */\r
304 result = attach_unit(uptr, cptr);\r
305\r
306 if (result != SCPE_OK) {\r
307 if (IS_DEBUG) printf("problem attaching file\n");\r
308 return result;\r
309 }\r
310\r
311 SETBIT(plot_dsw, PLOT1627_DSW_NOT_READY); /* assume failure */\r
312\r
313 /* set up our canvas at the desired size */\r
314 image = gdImageCreate(plot_ymax+1,plot_xmax+1); /* create our canvas */\r
315 if (image == NULL) {\r
316 if (IS_DEBUG) printf("problem creating image canvas\n");\r
317 return SCPE_MEM;\r
318 }\r
319\r
320 /* set up the basic colors after image created */\r
321 white_background = gdImageColorAllocate(image,WHITE); /* white is background */\r
322 black_pen = gdImageColorAllocate(image,BLACK); /* load up black color */\r
323 blue_pen = gdImageColorAllocate(image,BLUE); /* load up blue color */\r
324 red_pen = gdImageColorAllocate(image,RED); /* load up red color */\r
325 green_pen = gdImageColorAllocate(image,GREEN); /* load up green color */\r
326 yellow_pen = gdImageColorAllocate(image,YELLOW); /* load up yellow color */\r
327 purple_pen = gdImageColorAllocate(image,PURPLE); /* load up purple color */\r
328 ltgrey_pen = gdImageColorAllocate(image,LTGREY); /* load up light grey color */\r
329 grey_pen = gdImageColorAllocate(image,GREY); /* load up grey color */\r
330\r
331 if ( (white_background == -1) || (black_pen == -1) ||\r
332 (red_pen == -1) || (blue_pen == -1) || (green_pen == -1) ||\r
333 (purple_pen == -1) || (ltgrey_pen == -1) || (grey_pen == -1) ) {\r
334 if (IS_DEBUG) printf("problem allocating pen colors\n");\r
335 return SCPE_MEM;\r
336 }\r
337\r
338 CLRBIT(plot_dsw, PLOT1627_DSW_NOT_READY); /* we're in business */\r
339\r
340 update_pen(); /* routine to ensure pen is okay */\r
341\r
342 return SCPE_OK;\r
343}\r
344\r
345/* pen updating routine, called at attach and whenever we reset the values */\r
346\r
347void update_pen (void)\r
348{\r
349 int color;\r
350 int width;\r
351\r
352 if (!IS_ONLINE(plot_unit)) return; /* only do this if attached */\r
353\r
354 /* pick up latest color as active pen */\r
355 color = GET_COLOR;\r
356 switch (color) {\r
357 case PEN_BLACK:\r
358 plot_pcolor = black_pen;\r
359 break;\r
360\r
361 case PEN_RED:\r
362 plot_pcolor = red_pen;\r
363 break;\r
364\r
365 case PEN_BLUE:\r
366 plot_pcolor = blue_pen;\r
367 break;\r
368\r
369 case PEN_GREEN:\r
370 plot_pcolor = green_pen;\r
371 break;\r
372\r
373 case PEN_YELLOW:\r
374 plot_pcolor = yellow_pen;\r
375 break;\r
376\r
377 case PEN_PURPLE:\r
378 plot_pcolor = purple_pen;\r
379 break;\r
380\r
381 case PEN_LTGREY:\r
382 plot_pcolor = ltgrey_pen;\r
383 break;\r
384\r
385 case PEN_GREY:\r
386 plot_pcolor = grey_pen;\r
387 break;\r
388\r
389 default:\r
390 if (IS_DEBUG) printf("invalid pen color state\n");\r
391 plot_pcolor = black_pen;\r
392 break;\r
393 }\r
394\r
395 /* set up anti-aliasing for the line */\r
396 gdImageSetAntiAliased(image, plot_pcolor);\r
397\r
398 /* pick up latest width for pen */\r
399 width = GET_WIDTH();\r
400 switch (width) {\r
401 case PEN_SINGLE:\r
402 plot_pwidth = 1;\r
403 gdImageSetThickness(image, 1);\r
404 break;\r
405\r
406 case PEN_TRIPLE:\r
407 plot_pwidth = 3;\r
408 gdImageSetThickness(image, 3);\r
409 break;\r
410\r
411 case PEN_DOUBLE:\r
412 plot_pwidth = 2;\r
413 gdImageSetThickness(image, 2);\r
414 break;\r
415\r
416 case PEN_QUAD:\r
417 plot_pwidth = 4;\r
418 gdImageSetThickness(image, 4);\r
419 break;\r
420\r
421 default:\r
422 if (IS_DEBUG) printf("invalid pen width\n");\r
423 plot_pwidth = 1;\r
424 gdImageSetThickness(image, 1);\r
425 break;\r
426 }\r
427\r
428 /* now ensure the pen state is accurate */\r
429 plot_pen = IS_PENDOWN ? PEN_DOWN : PEN_UP;\r
430 return;\r
431}\r
432\r
433/* plot_detach - detach file from simulated plotter */\r
434static t_stat plot_detach (UNIT *uptr)\r
435{\r
436 char * buf;\r
437 int32 size;\r
438 FILE * fp;\r
439 int32 result;\r
440\r
441 SETBIT(plot_dsw, PLOT1627_DSW_NOT_READY);\r
442\r
443 /* copy images to files, close files, set device to detached, free gd memory */\r
444\r
445 buf = gdImageGifPtr(image,&size);\r
446 if (! buf) {\r
447 if (IS_DEBUG) printf("failure creating GIF in-memory\n");\r
448 return SCPE_MEM;\r
449 }\r
450\r
451 fp = uptr->fileref; /* get file attached to unit */\r
452\r
453 if (! fseek(fp,0,SEEK_SET)) { /* first we reset to begin of file */\r
454 if (IS_DEBUG) printf("wrote out GIF to file\n");\r
455 result = fwrite(buf,1,size,fp); /* write out our image to the file */\r
456 }\r
457\r
458 gdFree(buf); /* free up the memory of GIF format */\r
459 gdImageDestroy(image); /* free up the canvas memory */\r
460\r
461 if (result != size) { /* some problem writing it */\r
462 if (IS_DEBUG) printf("error in write of image file\n");\r
463 return SCPE_IOERR;\r
464 }\r
465\r
466 return detach_unit(uptr); /* have simh close the file */\r
467}\r
468\r
469/* process_cmd - implement the drawing actions of the plotter */\r
470\r
471static void process_cmd (void)\r
472{\r
473 int32 oldx, oldy;\r
474\r
475 /* first see if we set any changes to pen or position, do an update */\r
476 if (need_update) {\r
477 update_pen();\r
478 need_update = 0;\r
479 }\r
480\r
481 /* will move pen one step or flip pen up or down */\r
482 oldx = plot_xpos;\r
483 oldy = plot_ypos;\r
484\r
485 switch (plot_cmd) {\r
486 case 1: /* raise pen command */\r
487 plot_pen = PEN_UP;\r
488 plot_unit->flags = plot_unit->flags & (~UNIT_PEN);\r
489 return;\r
490 break;\r
491\r
492 case 2: /* +Y command */\r
493 plot_ypos = plot_ypos + 1;\r
494 break;\r
495\r
496 case 4: /* -Y command */\r
497 plot_ypos = plot_ypos - 1;\r
498 break;\r
499\r
500 case 8: /* -X command */\r
501 plot_xpos = plot_xpos - 1;\r
502 break;\r
503\r
504 case 10: /* -X +Y command */\r
505 plot_xpos = plot_xpos - 1;\r
506 plot_ypos = plot_ypos + 1;\r
507 break;\r
508\r
509 case 12: /* -X -Y command */\r
510 plot_xpos = plot_xpos - 1;\r
511 plot_ypos = plot_ypos - 1;\r
512 break;\r
513\r
514 case 16: /* +X command */\r
515 plot_xpos = plot_xpos + 1;\r
516 break;\r
517\r
518 case 18: /* +X +Y command */\r
519 plot_xpos = plot_xpos + 1;\r
520 plot_ypos = plot_ypos + 1;\r
521 break;\r
522\r
523 case 20: /* +X -Y pen command */\r
524 plot_xpos = plot_xpos + 1;\r
525 plot_ypos = plot_ypos - 1;\r
526 break;\r
527\r
528 case 32: /* lower pen command */\r
529 plot_pen = PEN_DOWN;\r
530 plot_unit->flags = plot_unit->flags | UNIT_PEN;\r
531 return;\r
532 break;\r
533\r
534 default:\r
535 if (IS_DEBUG) printf("invalid plotter command\n");\r
536 return;\r
537 break;\r
538 }\r
539\r
540 /* check to see if carriage has moved off any edge */\r
541 if ((plot_xpos > (plot_xmax+1)) || (plot_ypos > (plot_ymax+1)) ||\r
542 (plot_xpos < 0) || (plot_ypos < 0)) {\r
543 /* if so, ignore as 1627 has no way of signalling error */\r
544 if (IS_DEBUG) printf(\r
545 "attempted to move carriage off paper edge %d %d for command %d\n",\r
546 plot_xpos,plot_ypos,plot_cmd);\r
547 return;\r
548 }\r
549\r
550 /* only draw a line if the pen was down during the movement command */\r
551 if (plot_pen) {\r
552 gdImageLine(image, plot_ymax-plot_ypos, plot_xmax-plot_xpos, plot_ymax-oldy, plot_xmax-oldx, gdAntiAliased);\r
553 /* semantics are 0,0 point is lower right */\r
554 }\r
555\r
556 return;\r
557}\r
558\r
559/* plot_set_length - validate and store the length of the paper */\r
560\r
561static t_stat plot_set_length (UNIT *uptr, int32 set, char *ptr, void *desc)\r
562{\r
563 char *cptr;\r
564 int32 val;\r
565\r
566#define LONGEST_ROLL 1440000 /* longest is 120', 14400", 1,440,000 .01"s */\r
567\r
568 val = strtotv (ptr, &cptr, (uint32) 10); /* sim routine to get value */\r
569 if ((val < 1) | (val >= LONGEST_ROLL)) { /* check valid range */\r
570 if (IS_DEBUG) printf("setting paper more than 120' or less than 1 inch\n");\r
571 return SCPE_ARG;\r
572 }\r
573\r
574 /* origin zero drawing, reduce by 1 but show command will fudge by adding it back */\r
575 *((int32 *)((REG *) desc)->loc) = val - 1;\r
576\r
577 return SCPE_OK;\r
578}\r
579\r
580/* plot_set_pos - validate and store the new position of the carriage */\r
581\r
582static t_stat plot_set_pos (UNIT *uptr, int32 set, char *ptr, void *desc)\r
583{\r
584 char *cptr;\r
585 int32 val;\r
586 int32 max;\r
587\r
588 max = (set == 1) ? plot_ymax : plot_xmax;\r
589 val = strtotv (ptr, &cptr, (uint32) 10);\r
590 if ((val < 0) | (val > max)) {\r
591 if (IS_DEBUG) printf("error moving carriage off paper edge\n");\r
592 return SCPE_ARG;\r
593 }\r
594\r
595 *((int32 *)((REG *) desc)->loc) = val;\r
596\r
597 return SCPE_OK;\r
598}\r
599\r
600/* routine to display the paper length and carriage position\r
601 * cannot use regular simh routine because it prints values twice,\r
602 * once for device and once for unit\r
603 */\r
604\r
605static t_stat plot_show_vals (FILE *fp, UNIT *uptr, int32 val, void *descrip)\r
606{\r
607 fprintf(fp, "length=%d, Xpos=%d, Ypos=%d",plot_xmax+1, plot_xpos,plot_ypos);\r
608 return SCPE_OK;\r
609}\r
610\r
611/* routine to add a terminating NL character when 'show plot length'\r
612 * or equivalent for xpos or ypos is issued, as simh will not append for us */\r
613\r
614static t_stat plot_show_nl(FILE *fp, UNIT *uptr, int32 val, void *descrip)\r
615{\r
616 int32 disp;\r
617 char *label;\r
618\r
619 disp = (val == 2) ? plot_xmax + 1 : ((val == 1) ? plot_ypos : plot_xpos);\r
620 label = (val == 2) ? "length=" : ((val == 1) ? "Ypos=" : "Xpos=");\r
621\r
622 fprintf(fp, "%s%d\n", label, disp);\r
623 return SCPE_OK;\r
624}\r
625\r
626/* plot_validate_change - force the update_pen routine to be called after user changes pen setting */\r
627\r
628static t_stat plot_validate_change (UNIT *uptr, int32 set, char *ptr, void *desc)\r
629{\r
630 need_update = 1;\r
631 return SCPE_OK;\r
632}\r
633\r
634#endif /* ENABLE_PLOT_SUPPORT */\r
Magically enhanced SIMH