This is an update to Z80DOS 2.0. Please see .DOC included for an explanation of what this has to offer. Version 2.31 fixes a problem with finding random records. Z80DOS is a replacement for CP/M BDOS of your operating system for Z80 systems. Z80DOS allows time-date stamping in the directory. All source code needed for to assemble to .COM/.HEX/.ZRL formates is included. For full documentation, please obtain Z80DOS10.LBR and Z80D20A.LBR before using this file.