Frank Cringle's Z80 instruction set exerciser

The original as supplied with yaze (by Frank Cringle) and as binaries with yaze-ag (by Andreas Gerlich).

zexdoc only tests officially documented flag effects, whereas zexall tests all flags changes, compared against tests on real hardware.

• yaze / The original as supplied with YAZE. Author: Frank Cringle
• cpm / ZEXALL and ZEXDOC source modified to assemble cleanly with ZMAC and MAXAM. Modifications by: J.G. Harston.

Source: http://mdfs.net/Software/Z80/Exerciser/