EM400 is an emulator of Polish MERA-400 minicomputer system (built in late '70 and popular in the '80). Learn more at: http://mera400.pl
Project is still in development state, but most of the emulation works fine and EM400 can run original MERA-400 software.
Emulation features:
- MERA-400 CPU
- MX-16 CPU (original CPU with modifications)
- floating point arithmetics
- Elwro memory (32kword modules, ferromagnetic)
- Amepol MEGA memory (64kword modules, semiconductor)
- character channel (character-oriented I/O interface)
- memory channel (block-oriented I/O interface)
- Amepol MULTIX peripherial processor
- Winchester disk drive
- TCP terminal
- built-in debugger
Things that are still waiting for implementation:
- MERA 9425 disk drive
- Terminals (serial, console)
- 5.25" floppy disk drive
- Amepol real time clock
Things that may or may not be implemented:
- Amepol PLIX peripherial processor
- EC 6051 disk drive
- PT-305 tape drive
To build and run em400 you'll need:
- cmake
- GNU make
- bison and flex
- libemdas
- libemcrk
- libemawp
- ncurses (used by debugger)
- readline (used by debugger)
Do the following in the source directory:
mkdir build
cd build
cmake ..
make
make install
Emulator is by default built with debugger, which currently is its primary (and only) user interface.
Usage:
em400 [option] ...
Where options are:
- -h - display help
- -c config - use given config file instead of default one (~/.em400/em400.cfg)
- -p program - load program image into OS memory
- -l levels - enable logging with given levels. Syntax for describing levels is:
component=level[,component=level[,..]]. Available components are: reg, mem, cpu, op, int, io, mx, px, cchar, cmem, term, wnch, flop, pnch, pnrd, crk5, em4h, all. Logging level is 0-9. - -L - disable logging
- -k value - set keys to given value
Debuger-only options:
- -s - use simple debugger interface