Up for saleis very rarefrom late 70\'Microsoftsoftware recorded on cassette tape !!! Microsoft Editor/Assembler-Plus software copyrighted 1980 with the first Microsoft logo on it. In excellent vintage condition consideringage - over 38 years old. Also includes software Z-Bug on cassette tape. The software designed for TRS-80 machines launched in 1977 and sold by Tandy Corporation through Radio Shack stores. TRS-80 was one of the earliest mass-produced personal computers.Microsoft Editor/Assembler-Plus (EDTASM-PLUS) is a software package supplied on cassette tape, that includes a complete Editor, Macro Assembler, and Debug program. EDTASM-PLUS is designed to be used on a TRS-80 Model I Computer with Level II BASIC and 16KB or more RAM memory.EDTASM-PLUS gives the capability to assemble TRS-80 assembly language programs directly into memory, without having to write out object programs to cassette tape and then load them. In addition EDTASM-PLUS provides a macro capability to automatically generate in-line code by invoking an assembly-language macro, or set of predefined instructions.

The manual appears very gently usedstill in very good vintage condition with justsome highlighting inside (one single page only). The cassetteappearsdamage free butit isbeing sold AS IS untested. Please refer to the pictures for more details