Advanced Disc Investigator

A very powerful Disc Utility ROM for standard and non-standard discs

1. BBC B, B+, Electron and Master Series
2. Acorn 8271 DFS 0.9, DFS 1.20
3. Acorn 1770 DFS, ADFS (including Acorn compatible DFS's)

Features:

1. backup most protected discs
2. copy 40 track discs onto 80 track discs
3. verify two non-standard discs
4. edit any type of non-standard disc
5. check and repair faulty tracks
6. create new disc formats
7. can operate in single and double density with 1770
8. 16K EPROM plus detailed instruction manual

STATUS window reveals all important disc information

1. source, destination drives and density
2. current track and sector
3. sector length
4. track, head, sector and length IDs
5. sectors per track
6. current FDC operation
7. result and meaning of last operation

ADI Commands

COPY A DISC - bakcs up normal and non standard discs. Can backup 40 track discs onto 80 track drives.

VERIFY TWO DISCS - verifies two normal or non-standard discs.

EDIT A SECTOR - edits non-standard sectors.

SCAN A DISC - reveals the format of a disc.

FORMAT A TRACK - formats a track to a defined specification.

UNFORMAT A TRACK - unformats a track, like a blank track.

MODIFY FORMAT PARMS - change the skew and format gap lengths

BUFFER EXAMINE - edit the buffer in hex/ascii or 65C02 disassembler

GET SECTORS FROM DISC - reads sectors from a non-standard disc

PUT SECTORS TO DISC - writes sectors to a non-standard disc

READ TRACK DATA - reads all the track data into the buffer

WRITE TRACK DATA - formats a track with the contents of the buffer

ZERO BUFFER - clear the buffer

TURN PRINTER ON/OFF - sends results from commands to printer

INITIALISE STATUS - returns the status window to its default state

*COMMAND - send command to MOS

*OSWORD7F - send command to OSWORD7F

For full instructions, download the comprehensive user guide.