x48ng -- HP48 CPU emulator

(I'm not very good at writing, see ./README_0.6.4 for the original README)

This is my fork of x48-0.6.4 where I deviate from the original code and do my own thing.

Usage

x48ng --help

You can use the script setup-x48ng-home.sh or simply run x48ng --rom=<romfilename>

Screenshots

--tui --small version (ncurses)

--tui --tiny version (ncurses)

--tui version (ncurses)

--x11 version

--sdl version

manual setup

1. Create $XDG_CONFIG_HOME/x48ng (usually ~/.config/x48ng/)
2. Copy /usr/share/x48ng/ROMs/gxrom-r (or any other rom) to $XDG_CONFIG_HOME/x48ng/rom
3. Run x48ng --print-config > $XDG_CONFIG_HOME/x48ng/config.lua
4. Run x48ng

Ncurses UI (--tui)

I had to be a bit 'creative' mapping keys there:

• On is either F4 or Esc or Home or \
• Left Shift is either F5 or PgUp or [
• Right Shift is either F6 or PgDn or ]
• Alpha is either F8 or Ins or ;

To quit x48ng --tui use F10 or Shift+End or |

What have I done:

0. renamed it to x48ng to avoid confusion
1. merged in a SDL1 version I found @ https://code.google.com/archive/p/x48-sdl/source/default/source
2. removed the code supporting Solaris, HP-UX, etc.
3. removed the autotools-based build system and wrote a simple Makefile instead
4. added a x48ng.desktop file and an icon
5. refactoring as a way to explore/understand the codebase
6. drop Xresources
7. link to lua to use it as a config file reader

Bugs to fix

See and report at https://github.com/gwenhael-le-moine/x48ng/issues

What more I would like to do:

short term

• port from sdl1.2 to sdl2

long(er) term

• GUI in gtk(4)?
• support the HP49g ROM?

Compilation

The Makefile will try to autodetect if necessary dependencies for x11 and sdl front-ends are met and enable/disable x11 and sdl front-ends accordingly.

You can force disable x11 front-end by compiling with make WITH_X11=no.

You can force disable sdl front-end by compiling with make WITH_SDL=no.

Ncurses front-end is always built-in.

Dependencies (see .github/workflows/c-cpp.yml for debian packages names)

• readline

for SDL version:

• SDL_gfx1
• SDL 1.2 or sdl12_compat

for x11 version:

• x11

for Ncurses:

• ncursesw

Installation

1. Run sudo make install PREFIX=/usr DOCDIR=/usr/doc/x48ng MANDIR=/usr/man DESTDIR=/tmp/package filling in your own values for PREFIX, DOCDIR, MANDIR and DESTDIR.
2. once installed run /usr/share/x48ng/setup-x48ng-home.sh to setup your ~/.x48ng/. It sets up a HP 48GX with a 128KB card in port 1 and a 4MB card in port 2
3. run x48ng and enjoy

Development

• make FULL_WARNINGS=yes to compile with all warnings
• make clean and make mrproper to clean between compilation runs
• make pretty-code to format the code using clang-format and the provided .clang-format

Friends and inspiration

• https://github.com/gwenhael-le-moine/x48 (original x48 slightly touched but not too much)
• https://github.com/shagr4th/droid48 (x48 ported to Android)
• https://hp.giesselink.com/emu48.htm (The Emu48)
• https://github.com/dgis/emu48android (Emu48 ported to Android)
• https://github.com/gwenhael-le-moine/jsEmu48 (another HP 48 emulator)