Hexam is a machine code editor, assembler and monitor in a "cartridge" that fits in the expansion port, made by ACE Software.
Now, thanks to Jose Leandro, the hardware specialist of the spectrum, with his famous page :
http://trastero.speccy.org/cosas/JL/JL.htm
We can know more about this hardware.
Pictures
Download
- Hexam ROM.zip (ROM for Emulators)
- Hexam (Eagle).zip (Hexam files for Eagle)