ZEXALL and ZEXDOC · Z80 instruction set exercisers

Original Copyright (C) 1994 Frank D. Cringle
Changes of 3 November 2002 Copyright (C) 2002 J. G. Harston

The authors license both test programs under the GNU General Public License,
version 2 or (at your option) any later version (GPL-2.0-or-later). The
download supplies both exercisers in source form as zexall.src and zexdoc.src
in emulator-source/z80e/gpl/. Each file retains the authors' copyright and
warranty notices and documents the 2002 syntax changes for the ZMAC and MAXAM
assemblers.

This directory contains separate programs for exercising a Z80 emulator.
The browser calculator runs the z80e emulator and the curated KnightOS ROM.
The upstream build enables the ZEX test frontend only when requested.

COPYING in this directory contains the full GNU GPL version 2. The adjacent
upstream file named LICENSE contains the GNU Lesser GPL version 2.1. Both
exercisers expressly select the GNU GPL in their own assembly headers.

Upstream source:
https://github.com/KnightOS/z80e/tree/00b5973f6f71dcc5a50203718ebba104ee9a9ce9/gpl
