Model I TRSDOS Commands

written by Matthew Reed

The Model I TRSDOS command shell supported a number of internal commands, as documented by the TRSDOS 2.3 Reference Manual. Most of the commands were also supported by other TRS-80 operating systems, although they usually added extra features beyond the TRSDOS versions.

Command	Description
APPEND file1 file2	copy file1 at the end of file2
AUTO command	execute command upon startup
ATTRIB filespec (param)	set protection attributes
BASIC	start Disk BASIC
BASIC2	start Level II BASIC (non-disk)
BASICR	start enhanced BASIC (which includes NAME command)
CLOCK	show onscreen clock
COPY file1 file2	copy file1 to file2
DATE	set DATE
DEBUG	real-time debugging program
DEVICE	display I/O devices
DIR	display directory
DUMP	dump memory to disk
KILL filespec	delete a file
FREE	display free space on all drives
LIB	display library commands
LIST filespec	list text file contents to display
LOAD filespec	load machine language file
PRINT filespec	print text file to line printer
PROT	change the protection status of all non-system files on the selected drive
RENAME	rename a file
TIME	set real-time clock
TRACE	dynamically display program counter
VERIFY	turn disk verification on or off

Additional Utilities

These utilities were not built into TRSDOS, but were available as separate programs on the TRSDOS disk. Other TRS-80 operating systems featured greatly enhanced versions of these utilities.

Command	Description
BACKUP	duplicate a disk
FORMAT	format a disk

Auxiliary utilities

These extra utilities were specific to TRSDOS, although other TRS-80 operating systems included programs with similar functions.

Command	Description
TAPEDISK	copy tape files to a disk file
DISKDUMP/BAS	examine disk file
GETDISK/BAS	copy any tape file to disk
GETTAPE/BAS	copy any disk file to tape

System Checkout Utilities

These utilities were specific to Model I TRSDOS. They were of limited value.

Command	Description
TEST1	memory tester
TEST2/BAS	stress test for disk system