Apple II Programmer's Reference: DOS 3.3 Commands

Apple II Programmer's Reference

Here's a brief list of Applesoft, Integer Basic, DOS 3.3, and ProDOS commands with descriptions.

I found these in the back of a manual for II in a Mac, one of the first Apple II emulators that ran on the original Mac and Mac 512. It came out in 1985.

DOS 3.3 Reference

Binary File Commands
BRUN name	Executes the binary file 'name'.
BSAVE name ,A ,L	Saves the file 'name' starting at A, with length L.
BLOAD name	Loads the binary file 'name'.

BASIC Program Commands
FP	Activates applesoft basic and clears any program currently in memory.
INT	Activates integer basic and clears any program currently in memory.
RUN name	Executes 'name' from disk.
LOAD name	Loads 'name' from disk.
SAVE name	Saves the current program as 'name' on disk.
INIT name	Initializes a disk, erasing all data from it and setting the startup program to 'name'.
MAXFILES n	Sets the maximum number of open files.
MON {,C} {,I} {,O}	Selects whether Commands, Output, or Input are echoed to the screen.
NOMON {,C} {,I} {,O}	Disables printing of DOS operations.

Programming Commands
CHAIN name	Allows integer basic programs to run other integer basic program.
PR# n	Re-directs output to slot n.
IN# n	Re-directs input from slot n.

Filing Commands
CATALOG	Displays contents of the current disk directory.
RENAME oldname, newname	Changes the name of a disk file.
DELETE name	Deletes the file 'name'.
LOCK name	Prevents the file 'name' from being deleted, renamed or changed.
UNLOCK name	Removes file locking.
VERIFY name	Checks to see than an entire file is readable.

Text File Commands
OPEN name	Opens a text file for reading.
CLOSE name	Closes a text file.
READ name	Sets the file 'name' to read mode.
WRITE name	Sets the file 'name' to write mode.
APPEND name	Sets write mode for 'name' at the end of the current file.
POSITION name,x	Moves the record pointer for 'name' to the position specified by x.
EXEC name	Reads text from file 'name' entering it as though it were typed from the keyboard.

Links to other command sets: Applesoft \| Integer Basic \| ProDOS

July 7, 2009