MCPUINFO is an MS-DOS application used to identify pre-Pentium processors and co-processors currently in use.

Example output: 8086+8087 with a newline.

Processors detected:

• 8086
• 80286
• 80386
• 80486

Co-processors detected:

• 8087
• 80287
• 80387

Command-line switches:

• --help, /?: Show help page and quit
• --version: Show version page and quit
• --ver: Print version only and quit

For a more sofisticated processor information tool, see ddcpuid.

This project uses NASM, because I like NASM.

It's as simple as:

nasm mcpuinfo.asm -fbin -omcpuinfo.com