mirror of
https://git.lyx.org/repos/lyx.git
synced 2024-11-14 15:05:56 +00:00
c48efc7922
git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@10003 a592a061-630c-0410-9148-cb99ea01b6c8
155 lines
5.2 KiB
Plaintext
155 lines
5.2 KiB
Plaintext
``dvi.doc''
|
|
Mon 27 Feb 1995
|
|
Geoffrey Tobin
|
|
|
|
Description of the DVI file structure.
|
|
--------------------------------------
|
|
|
|
Reference:
|
|
----------
|
|
|
|
CTAN: dviware/driv-standard/level-0/dvistd0.tex
|
|
|
|
"The DVI Driver Standard, Level 0",
|
|
by The TUG DVI Driver Standards Committee (now defunct)
|
|
chaired by Joachim Schrod.
|
|
Appendix A, "Device-Independent File Format",
|
|
section A.2, "Summary of DVI commands".
|
|
|
|
|
|
DVI Commands
|
|
------------
|
|
Listed in the free format:
|
|
"Opcode Symbol Parameter[Signed? Bytes] ... Action".
|
|
|
|
|
|
0 set_char_0 - set character 0 from current font
|
|
...
|
|
127 set_char_127 - set character 127 from current font
|
|
|
|
128 set1 c[1] - set 1-byte unsigned character (uchar) number c
|
|
129 set2 c[2] - set 2-byte uchar number c
|
|
130 set3 c[3] - set 3-byte uchar number c
|
|
131 set4 c[+4] - set 4-byte signed character (schar) number c
|
|
|
|
132 set_rule a[+4] b[+4] - set rule, height a, width b
|
|
|
|
133 put1 c[1] - put 1-byte uchar c
|
|
134 put2 c[2] - put 2-byte uchar
|
|
135 put3 c[3] - put 3-byte uchar
|
|
136 put4 c[+4] - put 4-byte schar
|
|
|
|
137 put_rule a[+4] b[+4] - put rule, height a, width b
|
|
|
|
138 nop - do nothing
|
|
|
|
139 bop c0[+4] ... c9[+4] p[+4] - beginning of page
|
|
140 eop - end of page
|
|
|
|
141 push - push (h,v,w,x,y,z) onto stack
|
|
142 pop - pop (h,v,w,x,y,z) from stack
|
|
|
|
143 right1 b[+1] - move right b units
|
|
144 right2 b[+2] - move right b units
|
|
145 right3 b[+3] - move right b units
|
|
146 right4 b[+4] - move right b units
|
|
|
|
147 w0 - move right w units
|
|
148 w1 b[+1] - move right b units, and set w = b
|
|
149 w2 b[+2] - move right b units, and set w = b
|
|
150 w3 b[+3] - move right b units, and set w = b
|
|
151 w4 b[+4] - move right b units, and set w = b
|
|
|
|
152 x0 - move right x units
|
|
153 x1 b[+1] - move right b units, and set x = b
|
|
154 x2 b[+2] - move right b units, and set x = b
|
|
155 x3 b[+3] - move right b units, and set x = b
|
|
156 x4 b[+4] - move right b units, and set x = b
|
|
|
|
157 down1 a[+1] - move down a units
|
|
158 down2 a[+2] - move down a units
|
|
159 down3 a[+3] - move down a units
|
|
160 down4 a[+4] - move down a units
|
|
|
|
161 y0 - move right y units
|
|
162 y1 a[+1] - move right a units, and set y = a
|
|
163 y2 a[+2] - move right a units, and set y = a
|
|
164 y3 a[+3] - move right a units, and set y = a
|
|
165 y4 a[+4] - move right a units, and set y = a
|
|
|
|
166 z0 - move right z units
|
|
167 z1 a[+1] - move right a units, and set z = a
|
|
168 z2 a[+2] - move right a units, and set z = a
|
|
169 z3 a[+3] - move right a units, and set z = a
|
|
170 z4 a[+4] - move right a units, and set z = a
|
|
|
|
171 fnt_num_0 - set current font number (f) = 0
|
|
...
|
|
234 fnt_num_63 - set f = 63
|
|
|
|
235 fnt1 k[1] - set f = k
|
|
236 fnt2 k[2] - set f = k
|
|
237 fnt3 k[3] - set f = k
|
|
238 fnt4 k[+4] - set f = k
|
|
|
|
239 xxx1 k[1] x[k] - special string x with k bytes
|
|
240 xxx2 k[2] x[k] - special string x with k bytes
|
|
241 xxx3 k[3] x[k] - special string x with k bytes
|
|
242 xxx4 k[4] x[k] - special string x with (unsigned) k bytes
|
|
|
|
243 fnt_def1 k[1] c[4] s[4] d[4] a[1] l[1] n[a+l] - define font k
|
|
244 fnt_def2 k[2] c[4] s[4] d[4] a[1] l[1] n[a+l] - define font k
|
|
245 fnt_def3 k[3] c[4] s[4] d[4] a[1] l[1] n[a+l] - define font k
|
|
246 fnt_def4 k[+4] c[4] s[4] d[4] a[1] l[1] n[a+l] - define font k
|
|
|
|
247 pre i[1] num[4] den[4] mag[4] k[1] x[k] - begin preamble
|
|
|
|
248 post p[4] num[4] den[4] mag[4] l[4] u[4] s[2] t[2] - begin postamble
|
|
249 post_post q[4] i[1] 223 ... 223 - end postamble
|
|
|
|
250 - undefined
|
|
...
|
|
255 - undefined
|
|
|
|
In bop:
|
|
|
|
c0[+4] ... c9[+4] = page counters, \`a la TeX.
|
|
p[+4] = pointer to previous bop (its byte address); first bop has p = -1 .
|
|
|
|
In the font definitions:
|
|
|
|
c[4] = check sum for TFM file.
|
|
s[4] = scale factor, in DVI units.
|
|
d[4] = design size, in DVI units.
|
|
a[1] = length of the "area" or directory.
|
|
l[1] = length of the font name.
|
|
n[a+l] = area and font name string(s).
|
|
|
|
In the preamble:
|
|
|
|
i[1] = DVI format ID = 2, except TeX-XeT has 3.
|
|
num[4] = numerator of 100 nm / DVI unit.
|
|
den[4] = denominator of 100 nm / DVI unit.
|
|
mag[4] = 1000 * magnification.
|
|
k[1] = comment length.
|
|
x[k] = comment string.
|
|
|
|
In the postamble:
|
|
|
|
p[4] = pointer to final bop.
|
|
num[4], den[4], mag[4] = duplicates of values in preamble.
|
|
l[4] = height-plus-depth of tallest page, in DVI units.
|
|
u[4] = width of widest page, in DVI units.
|
|
s[2] = maximum stack depth needed to process this DVI file.
|
|
t[2] = total number of pages (bop commands) present.
|
|
|
|
In the post-postamble:
|
|
|
|
q[4] = pointer to the "post" command that started the postamble.
|
|
i[1] = DVI format ID, as in the preamble.
|
|
223 ... 223 = at least four "223" bytes.
|
|
|
|
---------------
|
|
EOF ``dvi.doc''
|
|
---------------
|