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MMFS Commands (mostly also Acorn DFS)

Handy Commands

*DOP U (<drive>) - unprotect disk
*DOP P (<drive>) - protect disk
*DOP K (<drive>) - mark disk as unformatted
*DOP R (<drive>) - mark disk as formatted
*DOP N (<drive>) - find and insert the first unformatted disk
*DFREE - show number of disks vs number of unformatted disks.
*DBOOT (<disk#|title>) - boot the disk. Wildcards can be used for titles.
*DCAT ((<from dno>) <to dno>) (<adsp>) - list disks, adsp allows wildcards.

Command Summary

The filesystem responds to multiple activations to help differentiate from existing DFS ROMS.

*MMFS - Select MMFS filesystem.
*DISC - Select MMFS filesystem.
*DISK - Select MMFS filesystem.

*DDRIVE - Lists drives and disks that are currently inserted.

Acorn DFS 2.x Compatible Commands

*ACCESS <filename> L - unlock or lock a file for modification.
*BACKUP <src> <dest> - backup disk in e.g. drive '0' to drive '1'
*CLOSE -
*COMPACT <drive> - reorganise files to contiguous sectors.
*COPY <src> <dest> <filename>
*DELETE <filename>
*DESTROY <wildcard> - e.g. *DESTROY *.H*
*DIR <dir> - set the current directory.
*DRIVE <drive> - set the current drive number (0 based).
*ENABLE - enable destructive commands (BACKUP, DESTROY)
*EX (<dir>) - display contents of directory.
*FORM <40|80> <drive> - format a disk.
*FREE
*INFO
*LIB :<drive>.<directory> - sets the directory to search for *<filename> commands.
*MAP
*RENAME <old> <new>
*TITLE "Disk name"
*VERIFY
*WIPE

The following commands work as per Acorn DFS 2.x Utilities:

*BUILD <filename> - build a file from keyboard entry. Escape to finish.
*DUMP <filename> - hexdump the file to screen.
*LIST <filename> - list a Data File to screen with line numbers.
*ROMS
*TYPE <filename> - display a text file to screen without line numbers.
*EXEC <filename> - execute file contents as if typed at the keyboard.

*CAT <drive> - list files on the disk.

*SAVE <filename> <start address> <finish address> (<execute addr.>) (<reload addr.>)
*LOAD <filename> <address>

*OPT 4 (n) - !BOOT option, where n = (0: nothing, 1:LOAD (6502), 2:RUN (6502), 3:EXEC (BASIC)

Links

MMFS Command Reference (Wiki)

Acorn Disc Filing System User Guide (PDF)