PERHAPS :adding/deleting files without a command line list.
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NEW ARCHIVE FORMAT:
$.ELITE : bare file
$.ELITE.inf : info text file containing
'$.ELITE FF0E00 FF8023 Locked CRC=XXXX NEXT $.ELITE2'
The $.ELITE is optional but if present the files may be renamed
to say a and a.inf. $.ELITE is then the real filename.
A CRC is included for various reasons (to check fileconversion
software, serial- or disk- file transfer to/from a bbc, etc.)
The CRC is calculated with the algorithm from the BBC user guide p. 399
(The same algorithm as used in the cassettte and rom filing system).
'Locked' may be abbreviated to 'L'.
NEXT may be used for CHAIN"" or *RUN as used on cassette systems.
file length may be included (after the execution address) but is
unnecessary.
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FDCDEMO: Issue the command B: (or A: depending on the system) LAST,
just before a 'READ file' command.
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FDC: (my improved version of FDCDEMO):
A 40 track PC drive is now default (Yep, I have one of those). If using a 1.2 MB drive enter DDINHD (or not??), CYL 80. You can now read 80 track discs. To read 40 tracks also enter DOUBLESTEP.
FORMAT now works for all formats with MINSECTOR<>1.
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FOR ANADISK INFO READ THROUGH THE FOLLOWING:
ANADISK: dumping a BBC disk
In anadisk goto dump, select the 5 1/4 drive, select the side(s) to dump.
give a name e.g elite.0/elite.1 (for bbc0 (the .0 file must be the dump of
side 0)) or elite.2 (or elite.bbc) if you need neither.
(don't worry about the error messages, except when anadisk says it is adding
sectors, in that case redo the dump)
OLD PROGRAMS:
If anadisk skips odd tracks (see below) use:
bbc0.cc : combines the images of anadisk diskdump of side 0 and side 1.
useful if you only have a single sided BBC discdrive.
On the BBC: Take an empty single density disc.
copy the wanted files to DRIVE 0 (side 0)
Change to DRIVE 2 (side 1)
*SAVE EMPTY 1000 19FF
copy the files to dr.2 in the same order as on side 0
This is only necessary if anadisk skips the odd tracks. For me this is the case
with a 360K disc drive reading any disk that has been formatted in the usual way
on my CHALLENGER 1.01 diskdrive even if I tell it format to 40tracks.
On this drive it is possible to get a REAL 40 track disk by issueing the
command *OPT8,1 (*4080 ON for DDOS). Test with your system and see if anadisk
skips the odd tracks.
N.B. this technique is NECESSARY to read BBC disks with only a 360K PC drive
(40tracks) and a 80 track (non switchable) BBC drive!
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For this you need the following program:
bbc80.cc: make 80track single or double density image using only a 40 track
PC drive
> bbc80 [option] imagefile (no extension!) for a file 'imagefile.dsk'