PTDOS or Processor Technology Disk Operating System is an operating system created in the late 1970s for computers using the Intel 8080 microprocessor and the Processor Technology Helios II Disk Memory System.Leaflet for the Helios II system and PTDOS
Commands The following list of commands is supported by PTDOS 1.4.
EDIT EDT3 ASSM DEBUG DO DISKCOPY RECOVER FILES FREE? SYST OPEN? COPY IMAGE BLDUTIL EXTRACT KILL RENAME RETYPE REATR XREF DUMP PRINT RNUM SAVE GET CREATE OPEN READ WRITE CLOSE SPACE RANDOM SEEK ENDF SETIN SETOUT SET EXEC ZIP CONFIGR OUT BASC5 FOCAL TREK80
References
External links Sol 20 site – This computer used PTDOS when a Helios II disk drive was installed.