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Compiling MS-DOS VICE with DJGPP
================================
By Fabrizio Gennari (fabrizio.ge@tiscalinet.it)
A way of compiling the MS-DOS version of VICE is to use a cross-compiler
which runs on Linux. But it is also possible to compile VICE with a native
MS-DOS compiler, DJGPP. The only limitation is that VICE cannot be compiled
on native MS-DOS, only on an MS-DOS prompt under Windows. Why? Because VICE
sources use long filenames, while MS-DOS only supports "8+3" filenames: when
unpacking VICE sources, often two different filenames become identical after
8+3 truncation, and it is impossible to distinguish between them. Luckily,
DJGPP supports long filenames when run in a Windows environment.
First of all, download the required DJGPP files from the official site
(http://www.delorie.com/pub/djgpp/current/) or a mirror. These are the files for a
minimum installation, newer version of the files should be fine:
* from directory v2, djdev203.zip
* from directory v2gnu, bnu214b.zip, bsh204b.zip, dif28b.zip, fil41b.zip,
gcc332b.zip, gpp332b.zip, grep24b.zip, mak3791b.zip, sed407b.zip, shl2011b.zip,
txt20b.zip
* from directory v2tk/allegro, all403.zip . Actually, any Allegro from 3.1
on will do. Note that Allegro is distributed as source only, so you will have
to compile it.
Follow the instructions to install DJGPP. In short, unpack all the DJGPP ZIP
files in the same directory (remember to preserve the directory structure
while unpacking!), which will be called DJDIR from now on, add DJDIR\bin to
the PATH variable, and run the command
setdjgpp DJDIR DJDIR
where the first DJDIR has MS-DOS directory separators (\), and the second
DJDIR has Unix directory separators (/). Example:
setdjgpp C:\DJGPP C:/DJGPP
If you want those command to be automatically executed at boot, add them in
the AUTOEXEC.BAT file.
Now, unpack VICE sources in a directory: all VICE files will be in a
sub-directory called vice-<version number>. Open an MS-DOS prompt window,
go to the vice-<version number> dir and type
bash
. From now on, you just have to follow the instructions to compile Unix
VICE: the simplest way is to type
./configure
make
make install
After that, you have VICE binaries and accompanying files in the
installation directory, which will be called VICEDIR form now on
(C:\usr\local by default, you can change that by passing the
option --prefix=a_different_installation_directory to the configure script,
where a_different_installation_directory has to be replaced with the full
path of the installation directory of your choice). The only missing thing
is a configuration file. From an MS-DOS prompt window (no need to be
inside bash), go to the directory VICEDIR\bin and type
x64 -directory VICEDIR\lib\vice\c64;VICEDIR\lib\vice\drives
(replace x64 and c64 with the name of the emulator and the emulated machine,
if you want to run an emulator other than the C64 one). VICEDIR should be in
MS-DOS format, i.e. <drive_letter>:\<path with \ as dir separator> .
If everything went well, you should have your emulator up and running. Press
ESC, choose the option "Configuration commands" then "Write configuration",
and a configuration file will be created, so from now on jou can just type
"x64" or double-click on the x64.exe icon.
But that's not all: the compiled emulator can be run on native MS-DOS mode
with a little addition. Download from subdir v2misc of DJGPP website the
file csdpmi5b.zip (older version should be OK, too) and unzip the file
CWSDPMI.EXE in the same directory as the VICE .EXE files, or in a directory
in the path.
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