The NASM assembler is available from: http://www.nasm.us/ The link to the release notes for what is new in NASM 2.15.05 is at: http://www.nasm.us/doc/nasmdocc.html ...

All code has been written to compile with NASM 2.14 (https://nasm.us/), and tested on DOSBox 0.74-2 (https://www.dosbox.com/). It is written to assemble into 16-bit ...