Pascal III: SOS Error Codes

• Last Modified: October 23, 1984
• Article: TA36986
• Old Article: 226

Following is a list of errors codes available to the Pascal programmer from
the Apple III's Sophisticated Operating System (SOS).
 
------->  Pascal Errors
  0       No error; normal I/O completion
  1       Out of filename storage space
  2       Bad unit number
  3       Illegal operation (e.g. read from PRINTER:)
  4       Illegal directory spec
  5       Lost unit; no longer on line
  6       Lost file; file no longer in directory
  7       Illegal pathname
  8       No room; insufficient space on diskette
  9       No unit; unit not on line
 10       No such file in specified directory
 11       Duplicate pathname
 12       Attempt to open an already open file
 13       Attempt to access a closed file
 14       Bad input format; error in reading number
 15       Wrong disk format
 16       Write protect error; diskette is protected
 
------->  SOS Device Call Errors
 32       (SOS) Invalid request code
 33       (SOS) Invalid control/status code
 34       (SOS) Invalid control/status parameter list
 35       (SOS) Character device not open
 36       (SOS) Device not available
 37       (SOS) Resource not available
 38       (SOS) Invalid operation
 39       (SOS) I/O error
 42       (SOS) Checksum error
 43       (SOS) Device write protected
 44       (SOS) Byte count not a multiple of 512
 45       (SOS) Block number too large
 46       (SOS) Diskette has been switched
 48..63   (SOS) Device specific error
 
------->  SOS File Call Errors
 64       (SOS) Invalid pathname syntax
 65       (SOS) Too many character files open
 66       (SOS) Too many block files open
 67       (SOS) Invalid file reference number
 68       (SOS) Path not found
 69       (SOS) Volume not found
 70       (SOS) File not found
 71       (SOS) Duplicate file name
 72       (SOS) Overrun on volume
 73       (SOS) Directory full
 74       (SOS) Incompatible file format
 75       (SOS) Unsupported file storage type
 76       (SOS) Attempted read past end of file
 77       (SOS) File position out of range
 78       (SOS) Access not allowed
 79       (SOS) User supplied buffer too small
 80       (SOS) File busy
 81       (SOS) Volume format neither SOS nor Apple II
 82       (SOS) Not a SOS volume
 83       (SOS) Invalid length parameter
 84       (SOS) Out of memory for SOS system buffer
 85       (SOS) Buffer table full
 86       (SOS) Invalid system buffer parameter
 87       (SOS) Duplicate volume error
 88       (SOS) Not a block device
 89       (SOS) Invalid level
 90       (SOS) Invalid bitmap address found on volume
 
------->  Utility Call Errors
112       Invalid Joy_Mode parameter
 
------->  System Call Errors
123..127
 
------->  Memory Call Errors
240       Invalid segment address
241       Segment request denied
242       Segment table full
243       Invalid segment number
244       Segment not found
245       Invalid Search_Mode parameter
246       Invalid Change_Mode parameter
247       Invalid pages parameter