Bootable 16-bit SUBLEQ eForth

A bootable version of subleq eForth.

For more information see:

• https://esolangs.org/wiki/Subleq
• https://github.com/howerj/subleq
• https://en.wikipedia.org/wiki/One-instruction_set_computer

Building

Type make to build and run this version with qemu.
Type make keyb-FR to build an FR keyboard mapping. Then rebuild with make.
qemu-system-i386 need to be installed.

Running on real hardware

To run subleq-eForth on a real hardware with grub2:

• Copy the grub configuration and make it executable:

sudo cp grub2-floppy.cfg /etc/grub.d/40_subleq_eForth
sudo chmod a+x /etc/grub.d/40_subleq_eForth

• Install memdisk from syslinux. For example on a Debian system:

sudo apt install syslinux
sudo cp /usr/lib/syslinux/memdisk /boot/

• Rebuild the grub config:

sudo grub-mkconfig -o /boot/grub/grub.cfg

• Build the subleq-eForth floppy:

make floppy

• Install the floppy image in the grub /boot directory;

sudo cp subleq-boot.flp /boot/

• Reboot...

• Enjoy the poetry!

Note: you may have to disable the uefi boot and fallback to legacy boot to avoid graphical problems