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)