source: buchla-68k/orig/BUCHLA/CGEN.C@ 7bf3856

Last change on this file since 7bf3856 was 3ae31e9, checked in by Thomas Lopatic <thomas@…>, 7 years ago

Imported original source code.

  • Property mode set to 100755
File size: 4.5 KB
Line 
1/*
2 =============================================================================
3 cgen.c -- Intel/Matra-Harris 82716 VSDD character generator translator
4 Version 5 -- 1988-10-05 -- D.N. Lynx Crowe
5
6 Reads lines of data from stdin containing the hex specifications
7 of characters to be built for the VSDD character generator tables.
8
9 The first line is a header containing the 1 to 7 character
10 name of the cg array to be generated, and 2 decimal fields, the
11 first of which gives the number of scan lines per character,
12 in the range 1 to 16, and the second of which is the number
13 of pixels per scan line, which must be 6, 8, 12 or 16.
14
15 Each data line consists of 2 to 17 hex fields, the first of which is
16 the hex character code, and the remainder of which are the hex codes
17 for each scan line in the character, from bottom to top.
18
19 The program reverses each pattern byte and stores it in the
20 appropriate slice table. When EOF is reached, the slice tables
21 are output to stdout as a c source file.
22 =============================================================================
23*/
24
25#define PROGID "cgen"
26
27#include "stdio.h"
28#include "stddefs.h"
29#include "memory.h"
30#include "strings.h"
31
32extern char *now();
33
34int slice[16][256]; /* slice table */
35int pixels;
36
37int nscans, npixels;
38int i, j, k, l;
39int cnum;
40
41char cgname[129];
42char dtg[32];
43
44int bitmask[] = {
45
46 0x0001, 0x0002, 0x0004, 0x0008,
47 0x0010, 0x0020, 0x0040, 0x0080,
48 0x0100, 0x0200, 0x0400, 0x0800,
49 0x1000, 0x2000, 0x4000, 0x8000
50};
51
52/*
53 */
54
55/*
56 =============================================================================
57 bitrev(bitsin, nbits) -- reverses the rightmost nbits of bitsin.
58
59 Any bits to the left of the reversed bits in the result will be zeros.
60 =============================================================================
61*/
62
63int
64bitrev(bitsin, nbits)
65int bitsin, nbits;
66{
67 int m, n;
68
69 n = 0;
70
71 for (m = 0; m < nbits; m++)
72 if (bitsin & bitmask[m])
73 n |= bitmask[nbits-1-m];
74
75 return(n);
76}
77
78/*
79 */
80
81main()
82{
83 memset(cgname, 0, sizeof cgname); /* clear the cg name array */
84 memset(slice, 0, sizeof slice); /* clear the slice array */
85
86 /* read header data */
87
88 if (3 NE scanf("%s %d %d", &cgname, &nscans, &npixels)) {
89
90 printf("\n%s: Unable to read header data.\n",
91 PROGID);
92 exit(1);
93 }
94
95 if (strlen(cgname) GT 7) {
96
97 printf("%s: Character generator name too long.\n",
98 PROGID);
99 exit(1);
100 }
101
102 if ((nscans GT 16) OR (nscans LE 0)) {
103
104 printf("%s: Number of scan lines must be > 0 and < 17.\n",
105 PROGID);
106 exit(1);
107 }
108
109 if ((npixels NE 6) AND (npixels NE 8) AND
110 (npixels NE 12) AND (npixels NE 16)) {
111
112 printf("%s: Number of pixels must be 6, 8, 12, or 16.\n",
113 PROGID);
114 exit(1);
115 }
116
117/*
118 */
119
120 /* process each character definition */
121
122 while (TRUE) {
123
124 if (EOF EQ scanf("%x", &cnum)) { /* character number */
125
126 /* all characters are in slice table, output it */
127
128 printf("/* VSDD character generator table %s */\n",
129 cgname);
130
131 printf("/* %dV by %dH */\n", nscans, npixels);
132
133 printf("/* Generated: %s */\n\n", now(dtg));
134
135 printf("int\tcg_rows = %d;\n\n", nscans);
136
137 printf("int\t%s[%d][256] = {\n\n", cgname, nscans);
138
139 for (i = 0; i < nscans-1; i++) {
140
141 l = 0;
142 printf("\t{\t/* Scan line %d */\n", i);
143
144 for (j = 0; j < 31; j++) {
145
146 printf("\t ");
147
148 for (k = 0; k < 8; k++) {
149
150 printf("0x%04x, ", slice[i][l]);
151 l++;
152 }
153
154 printf("\n");
155 }
156
157 printf("\t ");
158
159 for (k = 0; k < 7; k++) {
160
161 printf("0x%04x, ", slice[i][l]);
162 l++;
163 }
164
165 printf("0x%04x\n\t},\n\n", slice[i][l]);
166 }
167
168/*
169 */
170
171 l = 0;
172 printf("\t{\t/* Scan line %d */\n", i);
173
174 for (j = 0; j < 31; j++) {
175
176 printf("\t ");
177
178 for (k = 0; k < 8; k++) {
179
180 printf("0x%04x, ", slice[i][l]);
181 l++;
182 }
183
184 printf("\n");
185 }
186
187 printf("\t ");
188
189 for (k = 0; k < 7; k++) {
190
191 printf("0x%04x, ", slice[i][l]);
192 l++;
193 }
194
195 printf("0x%04x\n\t}\n", slice[i][l]);
196 printf("};\n");
197 exit(0);
198 }
199
200/*
201 */
202 if ((cnum < 0) OR (cnum > 255)) {
203
204 printf("%s: Character number must be > 0 and < FF.\n",
205 PROGID);
206 exit(1);
207 }
208
209 for (i = 0; i < nscans; i++) {
210
211 if (1 NE scanf("%x", &pixels)) {
212
213 printf("\n%s: Error reading slice data for %2x.\n",
214 PROGID, cnum);
215 exit(1);
216 }
217
218 slice[i][cnum] = bitrev(pixels, npixels);
219 }
220 }
221}
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