MAC80 is a Tops-10 (and probably -20) 8085 cross assembler written in MACRO-10. It will assemble most CP/M .ASM programs, generating a .HEX file as output. Most of the features of MAC80 are illustrated in the program TORTUR.M80. Some of the restrictions are: o Labels,macro names, etc. are limited to 12 characters. If more than 12 characters are found, they are ignored, and a warning message is output. o Labels must end with a colon. Macro definitions and EQU statements must not. A feature test switch will allow the generation of a somewhat obscure hex file extension to support relocation and internal/external references. MAC80 conforms the the standard compiler command line; *hex,list=source. TMP files are supported, so that the line X MAC80,M80,MAC80,,HEX,,= can be placed in COMPIL.MAC to invoke MAC80 like any other assembler. SFDs are not supported.