source: buchla-68k/orig/RAM/BARBADJ.C@ c79db87

Last change on this file since c79db87 was 3ae31e9, checked in by Thomas Lopatic <thomas@…>, 8 years ago

Imported original source code.
  • Property mode set to 100755
File size: 8.7 KB
Line 
1/*
2 =============================================================================
3 barbadj.c -- MIDAS-VII -- GLC bar graph drivers
4 Version 8 -- 1988-10-27 -- D.N. Lynx Crowe
5
6 BarBadj(bar, val)
7 short bar, val;
8
9 Adjusts a bottom-zero bar graph, 'bar',
10 to read 'val'.
11
12 BarBset(bar, val)
13 short bar, val;
14
15 Sets a bottom-zero bar graph, 'bar',
16 to an intial value, 'val'.
17
18 BarCadj(bar, val)
19 short bar, val;
20
21 Adjusts a centered-zero bar graph, 'bar',
22 to read 'val'.
23
24 BarCset(bar, val)
25 short bar, val;
26
27 Sets a centered-zero bar graph, 'bar',
28 to an intial value, 'val'.
29 =============================================================================
30*/
31
32#include "stddefs.h"
33#include "hwdefs.h"
34#include "glcfns.h"
35#include "glcdefs.h"
36
37extern short BarBcur[];
38extern short BarCcur[];
39
40/* left-most bar columns */
41
42short BarCols[14] = { 2, 8, 14, 20, 26, 32, 38, 44, 50, 56, 62, 68, 74, 80 };
43
44/* bar dot data */
45
46short BarDots[3] = { 0x1C, 0xFC, 0xE0 };
47
48#include "glcbars.h" /* bar graph driver constant definitions */
49
50/*
51
52*/
53
54/*
55 =============================================================================
56 BarBadj() -- adjust a bottom-zero bar graph to a new value
57 =============================================================================
58*/
59
60BarBadj(bar, val)
61short bar, val;
62{
63 register short bardot, barpos, curdif;
64 register unsigned baradr;
65 short barcol, bardif, curbar, i, newbar;
66
67 newbar = BarBLn[val]; /* look up the new bar position */
68 curbar = BarBcur[bar]; /* get the current bar position */
69 bardif = newbar - curbar; /* calculate how far to move the bar */
70
71 if (0 EQ bardif) /* done if bar doesn't need to be moved */
72 return;
73
74 GLCcurs(G_ON); /* turn on GLC cursor to enable writing */
75 barcol = BarCols[bar]; /* find leftmost column of bar */
76
77 if (bardif > 0) { /* increasing value */
78
79 /* calculate initial GLC RAM write address */
80
81 baradr = barcol + (85 * (63 - (curbar + 1))) + G_PLANE2;
82
83 LCD_WC = G_CRSMUP; /* set cursor motion "up" */
84
85 for (i = 0; i < 3; i++) { /* for each bar column ... */
86
87 curdif = bardif; /* set difference counter */
88 bardot = BarDots[i]; /* get the column dot value */
89
90 LCD_WC = G_CRSWR; /* set cursor address */
91 LCD_WD = baradr & 0xFF;
92 LCD_WD = (baradr >> 8) & 0xFF;
93
94 ++baradr; /* update GLC start address */
95
96 LCD_WC = G_MWRITE; /* setup to write */
97
98 while (curdif--) /* write new dots */
99 LCD_WD = bardot;
100 }
101/*
102
103*/
104 } else { /* decreasing value */
105
106 /* calculate initial GLC RAM write address */
107
108 baradr = barcol + (85 * (63 - curbar)) + G_PLANE2;
109
110 LCD_WC = G_CRSMDN; /* set cursor motion "down" */
111
112 for (i = 0; i < 3; i++) { /* for each bar column ... */
113
114 curdif = -bardif; /* set difference counter */
115
116 LCD_WC = G_CRSWR; /* set cursor address */
117 LCD_WD = baradr & 0xFF;
118 LCD_WD = (baradr >> 8) & 0xFF;
119
120 ++baradr; /* update GLC start address */
121
122 LCD_WC = G_MWRITE; /* setup to write */
123
124 while (curdif--) /* erase old dots */
125 LCD_WD = 0x00;
126 }
127 }
128
129 LCD_WC = G_CRSMRT; /* set cursor motion = "right" */
130 GLCcurs(G_OFF); /* turn off the cursor */
131
132 BarBcur[bar] = newbar; /* update current bar position */
133}
134
135/*
136
137*/
138
139/*
140 =============================================================================
141 BarBset() -- set a bottom-zero bar graph to an initial value
142 =============================================================================
143*/
144
145BarBset(bar, val)
146short bar, val;
147{
148 register short bardot, barpos, newbar;
149 register unsigned baradr;
150 short barcol, i;
151
152 newbar = BarBLn[val]; /* look up the new bar position */
153 barcol = BarCols[bar]; /* find leftmost column of bar */
154
155 GLCcurs(G_ON); /* turn on GLC cursor to enable writing */
156
157 /* calculate initial GLC RAM write address */
158
159 baradr = barcol + (85 * (63 - BBase)) + G_PLANE2;
160
161 LCD_WC = G_CRSMUP; /* set cursor motion = "up" */
162
163 for (i = 0; i < 3; i++) { /* for each bar column ... */
164
165 bardot = BarDots[i]; /* get the column dot value */
166 barpos = BBase; /* get base of bar */
167
168 LCD_WC = G_CRSWR; /* set cursor address */
169 LCD_WD = baradr & 0xFF;
170 LCD_WD = (baradr >> 8) & 0xFF;
171
172 ++baradr; /* update GLC start address */
173
174 LCD_WC = G_MWRITE; /* setup to write */
175
176 while (barpos++ LE newbar) /* write new dots */
177 LCD_WD = bardot;
178
179 while (barpos++ < BTop) /* erase old dots */
180 LCD_WD = 0x00;
181 }
182
183 LCD_WC = G_CRSMRT; /* set cursor motion = "right" */
184 GLCcurs(G_OFF); /* turn off the cursor */
185
186 BarBcur[bar] = newbar; /* update current bar position */
187}
188
189/*
190
191*/
192
193/*
194 =============================================================================
195 BarCadj() -- adjust a centered-zero bar graph to a new value
196 =============================================================================
197*/
198
199BarCadj(bar, val)
200short bar, val;
201{
202 register short bardot, barpos, newbar;
203 register unsigned baradr;
204 short barcol, bardif, curbar, i;
205
206 newbar = BarCLn[val + BOffset]; /* look up the new bar position */
207 curbar = BarCcur[bar]; /* get the current bar position */
208 bardif = newbar - curbar; /* calculate how far to move the bar */
209
210 if (0 EQ bardif) /* done if bar doesn't need to be moved */
211 return;
212
213 GLCcurs(G_ON); /* turn on GLC cursor to enable writing */
214
215 barcol = BarCols[bar]; /* find leftmost column of bar */
216
217 /* calculate initial GLC RAM write address */
218
219 baradr = barcol + (85 * (63 - curbar)) + G_PLANE2;
220
221/*
222
223*/
224 if (newbar > curbar) { /* increasing value */
225
226 LCD_WC = G_CRSMUP; /* set cursor motion "up" */
227
228 for (i = 0; i < 3; i++) { /* for each bar column ... */
229
230 bardot = BarDots[i]; /* get the column dot value */
231 barpos = curbar; /* set current vert. position */
232
233 LCD_WC = G_CRSWR; /* set cursor address */
234 LCD_WD = baradr & 0xFF;
235 LCD_WD = (baradr >> 8) & 0xFF;
236
237 LCD_WC = G_MWRITE; /* setup to write */
238
239 while (barpos NE newbar) /* write bar on LCD */
240 if (barpos++ < BCenter)
241 LCD_WD = 0x00; /* dots off */
242 else
243 LCD_WD = bardot; /* dots on */
244
245 ++baradr; /* update GLC start address */
246 }
247/*
248
249*/
250 } else { /* decreasing value */
251
252 LCD_WC = G_CRSMDN; /* set cursor motion "down" */
253
254 for (i = 0; i < 3; i++) { /* for each bar column ... */
255
256 bardot = BarDots[i]; /* get column dot value */
257 barpos = curbar; /* set current bar location */
258
259 LCD_WC = G_CRSWR; /* set cursor address */
260 LCD_WD = baradr & 0xFF;
261 LCD_WD = (baradr >> 8) & 0xFF;
262
263 LCD_WC = G_MWRITE; /* setup to write */
264
265 while (barpos NE newbar) /* write bar to LCD */
266 if (barpos-- > BCenter)
267 LCD_WD= 0x00; /* dots off */
268 else
269 LCD_WD = bardot; /* dots on */
270
271 ++baradr; /* update GLC start address */
272 }
273 }
274
275 LCD_WC = G_CRSMRT; /* set cursor motion = "right" */
276 GLCcurs(G_OFF); /* turn off the cursor */
277
278 BarCcur[bar] = newbar; /* update current bar position */
279}
280
281/*
282
283*/
284
285/*
286 =============================================================================
287 BarCset() -- set a centered-zero bar graph to an initial value
288 =============================================================================
289*/
290
291BarCset(bar, val)
292short bar, val;
293{
294 register short bardot, barpos, barloc1, barloc2;
295 register unsigned baradr;
296 short barcol, i, newbar;
297
298 GLCcurs(G_ON); /* turn on GLC cursor to enable writing */
299
300 newbar = BarCLn[val + BOffset]; /* look up the new bar position */
301 barcol = BarCols[bar]; /* find leftmost column of bar */
302
303 /* calculate initial GLC RAM write address */
304
305 baradr = barcol + (85 * (63 - BBase)) + G_PLANE2;
306
307 if (newbar < BCenter) { /* target below center */
308
309 barloc1 = newbar; /* off limit */
310 barloc2 = BCenter; /* on limit */
311
312 } else { /* target at or above center */
313
314 barloc1 = BCenter; /* off limit */
315 barloc2 = newbar; /* on limit */
316 }
317
318 LCD_WC = G_CRSMUP; /* set cursor motion "up" */
319
320/*
321
322*/
323 for (i = 0; i < 3; i++) { /* for each bar column ... */
324
325 bardot = BarDots[i]; /* get the column dot value */
326 barpos = BBase; /* set current vert. position */
327
328 LCD_WC = G_CRSWR; /* set cursor address */
329 LCD_WD = baradr & 0xFF;
330 LCD_WD = (baradr >> 8) & 0xFF;
331
332 LCD_WC = G_MWRITE; /* setup to write */
333
334 while (barpos < barloc1) { /* write "off" dots */
335
336 LCD_WD = 0x00;
337 barpos++;
338 }
339
340 while (barpos LE barloc2) { /* write "on" dots */
341
342 LCD_WD = bardot;
343 barpos++;
344 }
345
346 while (barpos LE BTop) { /* write "off" dots */
347
348 LCD_WD = 0x00;
349 barpos++;
350 }
351
352 ++baradr; /* update GLC start address */
353 }
354
355 LCD_WC = G_CRSMRT; /* set cursor motion = "right" */
356 GLCcurs(G_OFF); /* turn off the cursor */
357
358 BarCcur[bar] = newbar; /* update current bar position */
359}
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