Q6 Error messagesq


									

This chapter lists all the HADFS error messages, each preceded by the
appropriate error codes. The error codes are returned by the BASIC
function BERRb. The errors are listed in alphabetical order, and some
similar error messages have the same error number.

E&CF 207 Bad attributee
The B*ACCESSb command has been attempted with an access string containing
characters other than WRELP.

E&FE 254 Bad commande
The command was not recognised by HADFS, nor was it found as a transient
command in the CSD or the library.

E&CD 205 Bad drivee
An attempt to use an invalid drive number. Valid drives are :0 to :9 and
:A to :Z.  :W to :Z map onto :0 to :3. 

E&CC 204 Bad filenamee
An illegal filename was used, eg part of the name was longer than ten
characters or less than one character, or contained a control character or
a character larger than B~b, or one of the special characters B%b, B&b, B^b or B@b
used incorrectly.

E&FC 252 Bad numbere
The B<size>b parameter of the B*INSTALLb command or the B<nn>b parameter of the
B*FORMb command was wrongly used.

E&CB 203 Bad optione
An invalid argument to a B*OPTb command.

E&B0 176 Bad renamee
Not enough parameters were given to the B*RENAMEb command, or an attempt was
made to rename the I$i directory.

E&A8 168 Broken directorye
An attempt has been made to access a directory where HADFS cannot find the
reference to it in its parent directory. This would happen if the
directory header or the parent directory has been corrupted. You will also
get this error if you OPENOUT a file, and then CLOSE it before BPUTting
any data, leaving it zero bytes long.

E&96 150 Can't delete CSDe
You are not allowed to delete the currently selected directory. Use B*DIRb
to change the CSD.

E&97 151 Can't delete LIBe
You are not allowed to delete the current library. Use B*LIBb to change the
current library.

E&A2 162 Can't delete URDe
You are not allowed to delete the user root directory. Use B*I AMb or B*MOUNTb
to change the URD.

E&BF 191 Can't extende
An attempt has been made to move PTR past the end of a file opened for
writing, but there is no free space after the file on the disk for it to
expand into. Future versions of HADFS may attempt to move the file to
lessen the possibility of this error occuring.

E&93 147 Cannot run this codee
The load address and execution address high bytes disagree about which
processor the file should be run in, eg load: FFFF0900, exec: 00000900.

E&DE 222 Channele
A random access operation has been attempted on a channel that is not
valid to HADFS. HADFS uses channels 25 to 29.

E&DE 222 Channel not opene
A random access operation has been attempted on an HADFS channel that has
not been opened.

E&B0 176 Circular renamee
An attempt to rename a directory inside itself or one of its sub-
directories. Will also occur if trying to rename between a BigDir and a
SmallDir.

E&98 152 Compaction requirede
A creation operation (BSAVEb, B*CDIRb, BOPENOUTb) has been attempted on a disk
where the free space map has become too fragmented.

E&C7 199 Data CRC error at D:SSSSSSe
E&C7 199 ID CRC error at D:SSSSSSe
Some data on the disk has become corrupted.

E&B4 180 Dir. not emptye
An attempt has been made to delete a directory which still contains files
or directories.

E&C8 200 Disk changede
An attempt has been made to access a disk, but it is not in the drive.

E&C7 199 Disk Error VV at D:SSSSSSe
A disk error has occured that does not have a textual error message.

E&C6 198 Disk fulle
There is not enough free space on the disk to do the requested operation. 
This includes BSAVEb, B*CDIRb, opening new files or extending existing files. 
This error will also occur if there appears to be enough disk space, but
the free space map is fragmented so that there are only small bits of
space available, none large enough to be used.

E&C9 201 Disk read onlye
A write operation has been attempted on a disk that is write-protected.

E&D2 210 Drive x not presente
An attempt has been made to access a drive :2 to :V and there is no
support routine for the drive, or drive :0 or :1 have been set external
with B*OPT 7b and there is no support routine for them, or there is no DFS
OSWORD &7F routine to support drives :0 and :1 internally.

E&DF 223 End of filee
This error occurs if two consecutive attempts have been made to read from
a file whose end has been reached. The first failure will have been
flagged by the Carry being set following a OSBGET or OSGBPB.

E&C3 195 Entry lockede
An attempt has been made to remove, rename or overwrite a file or
directory which is locked.

E&BD 189 File execute onlye
An attempt to read or write to a file which has the execute-only access
bit set.

E&C4 196 File existse
An attempt has been made with B*RENAMEb to name a file or directory with the
same name as an existing file or directory or B*CDIRb to create a new
directory with the same name as an existing file.

E&C2 194 File opene
An attempt has been made to delete, rename, or overwrite a file that is
open, or to open a file that has already been opened for writing. A file
can be opened many times at once for reading, but only once for writing.

E&BD 189 Insufficient accesse
An attempt has been made to read or load a file with no BRb attribute bit,
or to write to a file with no BWb attribute bit.

E&A8 168 Is a directorye
An attempt to read from or write to a channel opened on a directory.

E&BE 190 XXXXX is not a directorye
An attempt to access a file as though is was a directory, eg with B*DIRb,
B*LIBb, B*CATb or B*EXb. 

E&B5 181 XXXXX is not a filee
An attempt to access a directory as though it was a file, eg with BLOADb.

E&C6 198 Length too longe
An attempt to create a file whose length would be 512K or longer on a
small disk or 4G or larger on a large disk. The maximum file length on a
small disk is 524287 (&7FFFF) bytes. This is 512K-1 bytes. The maximum
file length on large disks is 4294967295 (&FFFFFFFF) bytes. This is 4G-1
bytes.

E&C8 200 Not an HADFS diske
An attempt to use HADFS on a non-HADFS disk.

E&BD 189 Not enablede
An attempt has been made to use a dangerous command, B*FORMb or B*INSTALLb,
without first using B*ENABLEb, or answering BYb to the BGo?b prompt.

E&D6 214 XXXXX not founde
The file or directory referenced was not found.

E&BD 189 Not open for readinge
An attempt has been made to read from a channel that is only open for
writing.

E&C1 193 Not open for updatee
An attempt has been made to write to a channel that is only open for
reading.

E&B7 183 Outside filee
An attempt has been made to move PTR past the end of a file opened for
reading.

E&B0 176 Rename across diskse
An attempt has been made to use B*RENAMEb with the two filenames referencing
different disks. This could come about with a command such as:

			B*RENAME Prog %.Progb

if the library directory is on a different disk.

E&C7 199 Sector not found at D:SSSSSSe
An attempt has been made to access a sector that does not exist on the
disk or is wildly out of range, larger than 2559 on a floppy disk. This
could be because the disk has become corrupted somehow, or the HADFS
memory has become corrupted.

E&C0 192 Too many opene
An attempt has been made to open a sixth file. Only five files may be open
at once, only four of them being for output on the BBC.

E&C7 199 Track 0 not found at D:SSSSSSe
The disk drive couldn't find track zero on a disk. This is usually because
the disk has become corrupted. This usually does not affect HADFS much, as
the root catalogue is not stored on track zero. A system disk stores some
system files there, so this would mean you cannot boot the disk, and data
disks may have part of an HADFS file stored there, so part of that file
would be inaccessible.

E&CE 206 Unsupported directorye
This error is given if a large directory, used on disks larger than 16M in
size, is read with versions of HADFS that do not support them.

E&FD 253 Wildcardse
A wildcard character B#b or B*b was found where a full filename specification
was needed, eg in B*DELETEb, B*SAVEb, B*CDIRb and the destination of B*RENAMEb.

E&C7 199 Write fault at D:SSSSSSe
An error occured when writing to a disk. This is usually because of an
error with the drive, or sometimes the disk.

Disk errors report the sector the error occurs at as D:SSSSSS where D is
the drive, and SSSSSS is the absolute sector number in hexadecimal.  On
floppy disks, SSSSSS is sector+10*track+800*side.


DThe different between BLength too longb, BDisk fullb and BCan't extendbd

BLength too longb is returned if you try to create a file longer than will
fit with the directory structure used using OSFILE, ie SAVE or CREATE. 
Small directories, used on small disks, can hold files containing up to
512K-1 bytes. Large directories, used on large disks, can hold files
containing up to 4G-1 bytes.

BDisk fullb is returned if there is not a large enough area of free space on
a disk to create a file using any creation command, ie SAVE, CREATE, CDIR,
OPENOUT.

BCan't extendb if returned if there is not enough space to extend an opened
file, or if you try to extend it past the maximum size the directory
structure can store, eg 512K-1 bytes in small directories.


DError codes, numerically orderedd

EHex   Dece
&93   147  I cannot run this code
&94   148
&95   149
&96   150  Can't delete CSD
&97   151  Can't delete LIB
&98   152  Compaction required
&99   153					Free space map full
&9A   154					Bad disk
&9B   155					Too many disks
&9C   156					Illegal use of ^
&9D   157
&9E   158					Ambiguous disk name
&9F   159					Not same disk
&A0   160
&A1   161
&A2   162  Can't delete URD
&A3   163
&A4   164

&A5   165
&A6   166
&A7   167
&A8   168  Broken directory	XXXXX broken from parent
&A8   168  Is a directory
&A9   169					Bad free space map
&AA   170
&AB   171
&AC   172					Bad user name
&AD   173					Mode x
&AD   173					Sizes don't match
&AE   174					Not logged on
&AE   174					Same disk
&AF   175					Types don't match
&B0   176  Bad rename
&B0   176  Rename across disks
&B0   176  Circular rename
&B1   177					Already a user
&B2   178					PW file full
&B3   179  Directory full
&B4   180  Dir. not empty
&B5   181  XXXXX is not a file			Is a directory
&B6   182					Map fault
&B7   183  Outside file
&B8   184					Too many users
&B9   185					Bad password
&BA   186					Insufficient privilege
&BB   187					Wrong password
&BC   188					User not known
&BD   189  Not enabled
&BD   189  File execute only
&BD   189  Insufficient access
&BD   189  Not open for reading
&BE   190  XXXXX is not a directory
&BF   191  Can't extend			Who are you?
&C0   192  Too many open
&C1   193  Not open for update
&C2   194  File open
&C3   195  Entry locked
&C4   196  File exists
&C4   196					Types don't match
&C5   197					Drive fault
&C6   198  Disk full
&C6   198  Length too long
&C7   199  CRC error in ID at D:SSSSSS
&C7   199  CRC error in data at D:SSSSSS
&C7   199  Track 0 not found at D:SSSSSS
&C7   199  Write fault at D:SSSSSS
&C7   199  Sector not found at D:SSSSSS
&C7   199  Disk Error VV at D:SSSSSS
&C8   200  Not an HADFS disk
&C8   200  Disk changed
&C9   201  Disk read only
&CA   202					Bad sum
&CB   203  Bad option
&CC   204  Bad filename
&CD   205  Bad drive
&CE   206  Unsupported directory type		Bad directory
&CF   207  Bad attribute
&D0   208
&D1   209
&D2   210  Drive x not present
&D3   211					Drive empty
&D4   212					Disk not found
&D5   213					Disk not present
&D6   214  XXXXX not found

&DC   220  Syntax
&DD   221
&DE   222  Channel
&DE   222  Channel not open
&DF   223  End of file

&FC   252  Bad number
&FD   253  Wildcards
&FE   254  Bad command