From: Ben Harris <bjh21@bjh21.me.uk>
Date: Mon, 24 Jun 2024 12:38:32 +0000 (+0100)
Subject: Add "rom.ps" for generating MAME-style font ROM images
X-Git-Tag: bedstead-002.007~30
X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~bjharris/git?a=commitdiff_plain;h=20e3456c3ecc05cc12b6b0acef45cd7a675e6b5e;p=bedstead.git

Add "rom.ps" for generating MAME-style font ROM images

This could be used to provide images for MAME to use, but it's also
useful for comparing against images from other sources to spot errors.
---

diff --git a/rom.ps b/rom.ps
new file mode 100644
index 0000000..c2db58e
--- /dev/null
+++ b/rom.ps
@@ -0,0 +1,54 @@
+%!
+%
+% This file can be used to produce a ROM image suitable for use with
+% MAME's emulation of the SAA5050 family.  To produce such an image,
+% use a command like this:
+%
+% gs -P -q -dSAFER -sDEVICE=bit -o saa5051.rom rom.ps
+%
+% The image can also be compared against images from other sources to
+% detect errors in one or other source.  Currently only the SAA5051
+% image is supported.
+%
+% This command may be useful for turning ROM images back into source
+% code:
+%
+% hexdump \
+%   -e '" /* %3_ad */ {{" 1/1 "/*%03o,*/" 1/1 "%03o" 8/1 ",%03o" "}, -1},\n"'
+%
+/SAA5050
+[   32 { /.notdef } repeat
+    /space/exclam/quotedbl/sterling/dollar/percent/ampersand/quotesingle
+    /parenleft/parenright/asterisk/plus/comma/hyphen/period/slash
+    /zero/one/two/three/four/five/six/seven
+    /eight/nine/colon/semicolon/less/equal/greater/question
+    /at/A/B/C/D/E/F/G/H/I/J/K/L/M/N/O
+    /P/Q/R/S/T/U/V/W
+    /X/Y/Z/arrowleft/onehalf/arrowright/arrowup/numbersign
+    /endash/a/b/c/d/e/f/g/h/i/j/k/l/m/n/o
+    /p/q/r/s/t/u/v/w
+    /x/y/z/onequarter/dblverticalbar/threequarters/divide/filledbox
+    128 { /.notdef } repeat
+] /Encoding defineresource
+/SAA5051
+[   32 { /.notdef } repeat
+    /space/exclam/quotedbl/numbersign/dollar/percent/ampersand/quoteright
+    /parenleft/parenright/asterisk/plus
+    /comma.saa5051/hyphen/period.saa5051/slash
+    /zero/one/two/three/four/five/six/seven
+    /eight/nine/colon.saa5051/semicolon.saa5051/less/equal/greater/question
+    /section/A/B/C/D.saa5051/E/F/G/H/I/J.saa5051/K/L.saa5051/M/N/O
+    /P/Q/R/S/T/U/V/W
+    /X/Y/Z/Adieresis/Odieresis/Udieresis/asciicircum/underscore
+    /degree/a/b/c/d/e/f/g/h/i/j.saa5051/k/l/m/n/o
+    /p/q/r/s/t/u/v/w/x/y/z/adieresis/odieresis/udieresis/germandbls/filledbox
+    128 { /.notdef } repeat
+] /Encoding defineresource
+<< /HWResolution [ 72 72 ]
+   /PageSize [ 8 960 ] >> setpagedevice
+/Bedstead findfont 10 scalefont setfont
+2 952 moveto
+/SAA5051 findencoding
+32 96 getinterval
+{ glyphshow -6 -10 rmoveto } forall
+showpage