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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 | ||
22 | #include "config.h" | |
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 | ||
37 | static void | |
38 | mode_resetsize () | |
39 | { | |
40 | Fset_screen_width (ScreenCols (), Qnil); | |
41 | Fset_screen_height (ScreenRows (), Qnil); | |
42 | } | |
43 | ||
44 | DEFUN ("mode25", Fmode25, Smode25, 0, 0, "", | |
45 | "Set the number of rows to 25.") | |
46 | () | |
47 | { | |
48 | union REGS regs; | |
49 | ||
50 | if (have_mouse) Mouse_off (); | |
51 | regs.x.ax = 3; | |
52 | int86 (0x10, ®s, ®s); | |
53 | regs.x.ax = 0x1101; | |
54 | regs.h.bl = 0; | |
55 | int86 (0x10, ®s, ®s); | |
56 | regs.x.ax = 0x1200; | |
57 | regs.h.bl = 32; | |
58 | int86 (0x10, ®s, ®s); | |
59 | regs.x.ax = 3; | |
60 | int86 (0x10, ®s, ®s); | |
61 | mode_resetsize (); | |
62 | Frecenter (Qnil); | |
63 | Fredraw_display (); | |
64 | if (have_mouse) Mouse_init (); | |
65 | } | |
66 | ||
67 | DEFUN ("mode4350", Fmode4350, Smode4350, 0, 0, "", | |
68 | "Set the number of rows to 43 (EGA) or 50 (VGA).") | |
69 | () | |
70 | { | |
71 | union REGS regs; | |
72 | ||
73 | if (have_mouse) Mouse_off (); | |
74 | regs.x.ax = 3; | |
75 | int86 (0x10, ®s, ®s); | |
76 | regs.x.ax = 0x1112; | |
77 | regs.h.bl = 0; | |
78 | int86 (0x10, ®s, ®s); | |
79 | regs.x.ax = 0x1200; | |
80 | regs.h.bl = 32; | |
81 | int86 (0x10, ®s, ®s); | |
82 | regs.x.ax = 0x0100; | |
83 | regs.x.cx = 7; | |
84 | int86 (0x10, ®s, ®s); | |
85 | mode_resetsize (); | |
86 | Frecenter (Qnil); | |
87 | Fredraw_display (); | |
88 | if (have_mouse) Mouse_init (); | |
89 | } | |
90 | ||
91 | DEFUN ("int86", Fint86, Sint86, 2, 2, 0, | |
92 | "Call specific MSDOS interrupt number INTERRUPT with REGISTERS.\n\ | |
93 | Return the updated REGISTER vector.\n\ | |
94 | \n\ | |
95 | INTERRUPT should be an integer in the range 0 to 255.\n\ | |
96 | REGISTERS should be a vector produced by `make-register' and\n\ | |
97 | `set-register-value'.") | |
98 | (intno, regs) | |
99 | Lisp_Object intno, regs; | |
100 | { | |
101 | register int i; | |
102 | int no; | |
103 | union REGS inregs, outregs; | |
104 | Lisp_Object val; | |
105 | ||
106 | CHECK_NUMBER (intno, 0); | |
107 | no = (unsigned long) XINT (intno); | |
108 | CHECK_VECTOR (regs, 1); | |
109 | if (no < 0 || no > 0xff || XVECTOR (regs)-> size != 8) | |
110 | return Qnil; | |
111 | for (i = 0; i < 8; i++) | |
112 | CHECK_NUMBER (XVECTOR (regs)->contents[i], 1); | |
113 | ||
114 | inregs.x.ax = (unsigned long) XFASTINT (XVECTOR (regs)->contents[0]); | |
115 | inregs.x.bx = (unsigned long) XFASTINT (XVECTOR (regs)->contents[1]); | |
116 | inregs.x.cx = (unsigned long) XFASTINT (XVECTOR (regs)->contents[2]); | |
117 | inregs.x.dx = (unsigned long) XFASTINT (XVECTOR (regs)->contents[3]); | |
118 | inregs.x.si = (unsigned long) XFASTINT (XVECTOR (regs)->contents[4]); | |
119 | inregs.x.di = (unsigned long) XFASTINT (XVECTOR (regs)->contents[5]); | |
120 | inregs.x.cflag = (unsigned long) XFASTINT (XVECTOR (regs)->contents[6]); | |
121 | inregs.x.flags = (unsigned long) XFASTINT (XVECTOR (regs)->contents[7]); | |
122 | ||
123 | int86 (no, &inregs, &outregs); | |
124 | ||
125 | XVECTOR (regs)->contents[0] = make_number (outregs.x.ax); | |
126 | XVECTOR (regs)->contents[1] = make_number (outregs.x.bx); | |
127 | XVECTOR (regs)->contents[2] = make_number (outregs.x.cx); | |
128 | XVECTOR (regs)->contents[3] = make_number (outregs.x.dx); | |
129 | XVECTOR (regs)->contents[4] = make_number (outregs.x.si); | |
130 | XVECTOR (regs)->contents[5] = make_number (outregs.x.di); | |
131 | XVECTOR (regs)->contents[6] = make_number (outregs.x.cflag); | |
132 | XVECTOR (regs)->contents[7] = make_number (outregs.x.flags); | |
133 | ||
134 | return regs; | |
135 | } | |
136 | ||
137 | int dos_country_code; | |
138 | int dos_codepage; | |
139 | Lisp_Object Vdos_version; | |
140 | ||
141 | void | |
142 | init_dosfns () | |
143 | { | |
144 | union REGS regs; | |
145 | _go32_dpmi_seginfo info; | |
146 | _go32_dpmi_registers dpmiregs; | |
147 | ||
148 | get_lim_data (); /* why the hell isn't this called elsewhere? */ | |
149 | ||
150 | regs.x.ax = 0x3000; | |
151 | intdos (®s, ®s); | |
152 | Vdos_version = Fcons (make_number (regs.h.al), make_number (regs.h.ah)); | |
153 | ||
154 | /* Obtain the country code by calling Dos via Dpmi. Don't rely on GO32. */ | |
155 | info.size = (34 + 15) / 16; | |
156 | if (_go32_dpmi_allocate_dos_memory (&info)) | |
157 | dos_country_code = 1; | |
158 | else | |
159 | { | |
160 | dpmiregs.x.ax = 0x3800; | |
161 | dpmiregs.x.ds = info.rm_segment; | |
162 | dpmiregs.x.dx = 0; | |
163 | dpmiregs.x.ss = dpmiregs.x.sp = 0; | |
164 | _go32_dpmi_simulate_int (0x21, &dpmiregs); | |
165 | dos_country_code = dpmiregs.x.bx; | |
166 | _go32_dpmi_free_dos_memory (&info); | |
167 | } | |
168 | ||
169 | regs.x.ax = 0x6601; | |
170 | intdos (®s, ®s); | |
171 | if (regs.x.cflag) | |
172 | /* Estimate code page from country code */ | |
173 | switch (dos_country_code) | |
174 | { | |
175 | case 45: /* Denmark */ | |
176 | case 47: /* Norway */ | |
177 | dos_codepage = 865; | |
178 | break; | |
179 | default: | |
180 | /* US */ | |
181 | dos_codepage = 437; | |
182 | } | |
183 | else | |
184 | dos_codepage = regs.x.bx & 0xffff; | |
185 | } | |
186 | \f | |
187 | /* | |
188 | * Define everything | |
189 | */ | |
190 | syms_of_dosfns () | |
191 | { | |
192 | defsubr (&Smode25); | |
193 | defsubr (&Smode4350); | |
194 | defsubr (&Sint86); | |
195 | ||
196 | DEFVAR_INT ("dos-country-code", &dos_country_code, | |
197 | "The country code returned by Dos when Emacs was started.\n\ | |
198 | Usually this is the international telephone prefix."); | |
199 | ||
200 | DEFVAR_INT ("dos-codepage", &dos_codepage, | |
201 | "The codepage active when Emacs was started.\n\ | |
202 | The following are known: | |
203 | 437 US | |
204 | 850 Multilingual | |
205 | 852 Slavic/Latin II | |
206 | 857 Turkish | |
207 | 860 Portugal | |
208 | 861 Iceland | |
209 | 863 Canada (French) | |
210 | 865 Norway/Denmark"); | |
211 | ||
212 | DEFVAR_LISP ("dos-version", &Vdos_version, | |
213 | "The (MAJOR . MINOR) Dos version (subject to modification with setver)."); | |
214 | } | |
215 | #endif /* MSDOS */ |