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61:
FILE NOT OPEN
This message is .generated when a file is being accessed that has not been
opened in the DOS. Sometimes, in this case, a message is not generated;
the request is simply ignored.
62:
FILE NOT FOUND
The requested file does not exist on the indicated drive.
63:
FILE EXISTS
The file name of the file being created already exists on the diskette.
64:
FILE TYPE MISMATCH
The file type does not match the file type in the directory entry for the
requested file.
65:
NO BLOCK
This message occurs in conjunction with the B-A command. It indicates
that the block to be allocated has been previously allocated. The para
meters indicate the track and sector available with the next highest
number. If the parameters are zero (0), then all blocks higher in number
are in use.
66:
ILLEGAL TRACK AND SECTOR
The DOS has attempted to access a track or sector which does not exist in
the format being used. This may indicate a problem reading the pointer to
the next block.
67:
ILLEGAL SYSTEM TORS
This special error message indicates an illegal system track or sector.
70:
NO CHANNEL (available)
The requested channel is not available, or all channels are in use. A maxi
mum of five sequential files may be opened at one time to the DOS. Direct
access channels may have six opened files.
71:
DIR ERROR
The BAM does not match the internal count. There is a problem in the
BAM allocation or the BAM has been overwritten in DOS memory. To
correct this problem, reinitialize the diskette to restore the BAM in
memory. Some active files may be terminated by the corrective action.
NOTE: BAM = Block Availability Map
72:
DISK FULL
Either the blocks on the diskette are used or the directory is at its limit of
65
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