PTDOS

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.^[2]

PTDOS
Developer	Processor Technology
OS family	DOS
Working state	Historic, Unsupported
Initial release	1978; 47 years ago (1978)[1]
Available in	English
Package manager	N/A
Supported platforms	Intel 8080
Default user interface	Command-line interface
License	Proprietary

Commands

The following list of commands is supported by PTDOS 1.4.^[2]

• 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