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1b94449f RS |
1 | /* MS-DOS specific Lisp utilities. Coded by Manabu Higashida, 1991. |
2 | Major changes May-July 1993 Morten Welinder (only 10% original code left) | |
3 | Copyright (C) 1991, 1993 Free Software Foundation, Inc. | |
4 | ||
5 | This file is part of GNU Emacs. | |
6 | ||
7 | GNU Emacs is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 1, or (at your option) | |
10 | any later version. | |
11 | ||
12 | GNU Emacs is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GNU Emacs; see the file COPYING. If not, write to | |
19 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
20 | ||
21 | ||
48984716 | 22 | #include <config.h> |
1b94449f RS |
23 | |
24 | #ifdef MSDOS | |
25 | /* The entire file is within this conditional */ | |
26 | ||
27 | #include <stdio.h> | |
28 | #include <dos.h> | |
29 | #include "lisp.h" | |
30 | #include "buffer.h" | |
31 | #include "termchar.h" | |
32 | #include "termhooks.h" | |
33 | #include "frame.h" | |
34 | #include "dosfns.h" | |
35 | #include "msdos.h" | |
36 | ||
24ba360b RS |
37 | DEFUN ("mode25", Fmode25, Smode25, 0, 0, "", "\ |
38 | Changes the number of rows to 25.") | |
1b94449f RS |
39 | () |
40 | { | |
41 | union REGS regs; | |
42 | ||
24ba360b RS |
43 | #ifdef HAVE_X_WINDOWS |
44 | if (!inhibit_window_system) | |
45 | return Qnil; | |
46 | #endif | |
47 | if (have_mouse) mouse_off (); | |
1b94449f RS |
48 | regs.x.ax = 3; |
49 | int86 (0x10, ®s, ®s); | |
50 | regs.x.ax = 0x1101; | |
51 | regs.h.bl = 0; | |
52 | int86 (0x10, ®s, ®s); | |
53 | regs.x.ax = 0x1200; | |
54 | regs.h.bl = 32; | |
55 | int86 (0x10, ®s, ®s); | |
56 | regs.x.ax = 3; | |
57 | int86 (0x10, ®s, ®s); | |
24ba360b | 58 | Fset_frame_size (Fselected_frame (), ScreenCols (), ScreenRows ()); |
1b94449f RS |
59 | Frecenter (Qnil); |
60 | Fredraw_display (); | |
24ba360b RS |
61 | if (have_mouse) mouse_init (); |
62 | return Qnil; | |
1b94449f RS |
63 | } |
64 | ||
24ba360b RS |
65 | DEFUN ("mode4350", Fmode4350, Smode4350, 0, 0, "", "\ |
66 | Changes the number of rows to 43 (EGA) or 50 (VGA).") | |
1b94449f RS |
67 | () |
68 | { | |
69 | union REGS regs; | |
70 | ||
24ba360b RS |
71 | #ifdef HAVE_X_WINDOWS |
72 | if (!inhibit_window_system) | |
73 | return Qnil; | |
74 | #endif | |
75 | if (have_mouse) mouse_off (); | |
1b94449f RS |
76 | regs.x.ax = 3; |
77 | int86 (0x10, ®s, ®s); | |
78 | regs.x.ax = 0x1112; | |
79 | regs.h.bl = 0; | |
80 | int86 (0x10, ®s, ®s); | |
81 | regs.x.ax = 0x1200; | |
82 | regs.h.bl = 32; | |
83 | int86 (0x10, ®s, ®s); | |
84 | regs.x.ax = 0x0100; | |
85 | regs.x.cx = 7; | |
86 | int86 (0x10, ®s, ®s); | |
24ba360b | 87 | Fset_frame_size (Fselected_frame (), ScreenCols (), ScreenRows ()); |
1b94449f RS |
88 | Frecenter (Qnil); |
89 | Fredraw_display (); | |
24ba360b RS |
90 | if (have_mouse) mouse_init (); |
91 | return Qnil; | |
1b94449f RS |
92 | } |
93 | ||
94 | DEFUN ("int86", Fint86, Sint86, 2, 2, 0, | |
95 | "Call specific MSDOS interrupt number INTERRUPT with REGISTERS.\n\ | |
96 | Return the updated REGISTER vector.\n\ | |
97 | \n\ | |
98 | INTERRUPT should be an integer in the range 0 to 255.\n\ | |
99 | REGISTERS should be a vector produced by `make-register' and\n\ | |
100 | `set-register-value'.") | |
101 | (intno, regs) | |
102 | Lisp_Object intno, regs; | |
103 | { | |
104 | register int i; | |
105 | int no; | |
106 | union REGS inregs, outregs; | |
107 | Lisp_Object val; | |
108 | ||
109 | CHECK_NUMBER (intno, 0); | |
110 | no = (unsigned long) XINT (intno); | |
111 | CHECK_VECTOR (regs, 1); | |
112 | if (no < 0 || no > 0xff || XVECTOR (regs)-> size != 8) | |
113 | return Qnil; | |
114 | for (i = 0; i < 8; i++) | |
115 | CHECK_NUMBER (XVECTOR (regs)->contents[i], 1); | |
116 | ||
117 | inregs.x.ax = (unsigned long) XFASTINT (XVECTOR (regs)->contents[0]); | |
118 | inregs.x.bx = (unsigned long) XFASTINT (XVECTOR (regs)->contents[1]); | |
119 | inregs.x.cx = (unsigned long) XFASTINT (XVECTOR (regs)->contents[2]); | |
120 | inregs.x.dx = (unsigned long) XFASTINT (XVECTOR (regs)->contents[3]); | |
121 | inregs.x.si = (unsigned long) XFASTINT (XVECTOR (regs)->contents[4]); | |
122 | inregs.x.di = (unsigned long) XFASTINT (XVECTOR (regs)->contents[5]); | |
123 | inregs.x.cflag = (unsigned long) XFASTINT (XVECTOR (regs)->contents[6]); | |
124 | inregs.x.flags = (unsigned long) XFASTINT (XVECTOR (regs)->contents[7]); | |
125 | ||
126 | int86 (no, &inregs, &outregs); | |
127 | ||
128 | XVECTOR (regs)->contents[0] = make_number (outregs.x.ax); | |
129 | XVECTOR (regs)->contents[1] = make_number (outregs.x.bx); | |
130 | XVECTOR (regs)->contents[2] = make_number (outregs.x.cx); | |
131 | XVECTOR (regs)->contents[3] = make_number (outregs.x.dx); | |
132 | XVECTOR (regs)->contents[4] = make_number (outregs.x.si); | |
133 | XVECTOR (regs)->contents[5] = make_number (outregs.x.di); | |
134 | XVECTOR (regs)->contents[6] = make_number (outregs.x.cflag); | |
135 | XVECTOR (regs)->contents[7] = make_number (outregs.x.flags); | |
136 | ||
137 | return regs; | |
138 | } | |
139 | ||
87485d6f MW |
140 | #ifndef HAVE_X_WINDOWS |
141 | /* Later we might want to control the mouse interface with this function, | |
142 | e.g., with respect to non-80 column screen modes. */ | |
143 | ||
144 | DEFUN ("msdos-mouse-p", Fmsdos_mouse_p, Smsdos_mouse_p, 0, 0, 0, "\ | |
145 | Report whether a mouse is present.") | |
146 | () | |
147 | { | |
148 | if (have_mouse) | |
149 | return Qt; | |
150 | else | |
151 | return Qnil; | |
152 | } | |
153 | ||
154 | DEFUN ("set-mouse-position", Fset_mouse_position, Sset_mouse_position, 3, 3, 0, | |
155 | "Move the mouse pointer to the center of character cell (X,Y) in FRAME.\n\ | |
156 | WARNING: If you use this under X windows,\n\ | |
157 | you should call `unfocus-frame' afterwards.") | |
158 | (frame, x, y) | |
159 | Lisp_Object frame, x, y; | |
160 | { | |
161 | mouse_moveto (XINT (x), XINT (y)); | |
162 | } | |
163 | ||
164 | /* Function to translate colour names to integers. See lisp/term/pc-win.el | |
165 | for its definition. */ | |
166 | ||
167 | Lisp_Object Qmsdos_color_translate; | |
168 | #endif | |
169 | ||
170 | \f | |
1b94449f RS |
171 | int dos_country_code; |
172 | int dos_codepage; | |
173 | Lisp_Object Vdos_version; | |
174 | ||
175 | void | |
176 | init_dosfns () | |
177 | { | |
178 | union REGS regs; | |
179 | _go32_dpmi_seginfo info; | |
180 | _go32_dpmi_registers dpmiregs; | |
181 | ||
87485d6f | 182 | #ifndef SYSTEM_MALLOC |
1b94449f | 183 | get_lim_data (); /* why the hell isn't this called elsewhere? */ |
87485d6f | 184 | #endif |
1b94449f RS |
185 | |
186 | regs.x.ax = 0x3000; | |
187 | intdos (®s, ®s); | |
188 | Vdos_version = Fcons (make_number (regs.h.al), make_number (regs.h.ah)); | |
189 | ||
190 | /* Obtain the country code by calling Dos via Dpmi. Don't rely on GO32. */ | |
191 | info.size = (34 + 15) / 16; | |
192 | if (_go32_dpmi_allocate_dos_memory (&info)) | |
193 | dos_country_code = 1; | |
194 | else | |
195 | { | |
196 | dpmiregs.x.ax = 0x3800; | |
197 | dpmiregs.x.ds = info.rm_segment; | |
198 | dpmiregs.x.dx = 0; | |
199 | dpmiregs.x.ss = dpmiregs.x.sp = 0; | |
200 | _go32_dpmi_simulate_int (0x21, &dpmiregs); | |
201 | dos_country_code = dpmiregs.x.bx; | |
202 | _go32_dpmi_free_dos_memory (&info); | |
203 | } | |
204 | ||
205 | regs.x.ax = 0x6601; | |
206 | intdos (®s, ®s); | |
207 | if (regs.x.cflag) | |
208 | /* Estimate code page from country code */ | |
209 | switch (dos_country_code) | |
210 | { | |
211 | case 45: /* Denmark */ | |
212 | case 47: /* Norway */ | |
213 | dos_codepage = 865; | |
214 | break; | |
215 | default: | |
216 | /* US */ | |
217 | dos_codepage = 437; | |
218 | } | |
219 | else | |
220 | dos_codepage = regs.x.bx & 0xffff; | |
221 | } | |
222 | \f | |
223 | /* | |
224 | * Define everything | |
225 | */ | |
226 | syms_of_dosfns () | |
227 | { | |
228 | defsubr (&Smode25); | |
229 | defsubr (&Smode4350); | |
230 | defsubr (&Sint86); | |
87485d6f MW |
231 | #ifndef HAVE_X_WINDOWS |
232 | defsubr (&Smsdos_mouse_p); | |
233 | defsubr (&Sset_mouse_position); | |
234 | ||
235 | Qmsdos_color_translate = intern ("msdos-color-translate"); | |
236 | staticpro (&Qmsdos_color_translate); | |
237 | #endif | |
1b94449f RS |
238 | |
239 | DEFVAR_INT ("dos-country-code", &dos_country_code, | |
240 | "The country code returned by Dos when Emacs was started.\n\ | |
241 | Usually this is the international telephone prefix."); | |
242 | ||
243 | DEFVAR_INT ("dos-codepage", &dos_codepage, | |
244 | "The codepage active when Emacs was started.\n\ | |
24ba360b RS |
245 | The following are known:\n\ |
246 | 437 United States\n\ | |
247 | 850 Multilingual (Latin I)\n\ | |
248 | 852 Slavic (Latin II)\n\ | |
249 | 857 Turkish\n\ | |
250 | 860 Portugal\n\ | |
251 | 861 Iceland\n\ | |
252 | 863 Canada (French)\n\ | |
1b94449f RS |
253 | 865 Norway/Denmark"); |
254 | ||
255 | DEFVAR_LISP ("dos-version", &Vdos_version, | |
256 | "The (MAJOR . MINOR) Dos version (subject to modification with setver)."); | |
257 | } | |
258 | #endif /* MSDOS */ |