Error Codes; Compass Coding Form Description - Control Data 3100 Reference Manual

ERROR CODES
The following error codes may appear as the left-most field on an assembled listing. If
multiple errors are detected, multiple error codes are produced.
Code
A
Illegal character or expression in the address field.
D
Same symbol used in more than one location field term. Only the first sym-
bol is recognized; the remainder are ignored. A list of doubly defined sym-
bols appears on the assembled listing.
F
Symbol table is full. No more location field symbols will be recognized.
Also designates overflow of MACRO parameter table.
o
Illegal operation code. Zeros are substituted for the operation code.
U
Undefined symbol. A list of undefined symbols will appear on the output
listing.
C
An attempt was made to preset COMMON. The instructions are processed
as if PRG was encountered.
L
A symbol appears in the location field when not permitted, a symbol is
missing in the location field when one is required, or an illegal location
symbol appears.
M
A modifier appears in the location field when not permitted, a modifier is
missing in the operation field when one is required, or an illegal modifier
appears in the operation field.
T
A character address symbol was used in an address subfield requiring a
word symbol; significant bits are lost.
TABLE 8-2. COMPASS CODING FORM DESCRIPTION
FIELD COLUMNS
Location
Use columns 1-8. Column 9 is always blank.
Operation Begins in column 10 and continues until the
first blank column.
Address
Address may begin after the column terminat-
ing the operation field; however. it must begin
before column 41. The address field terminates
when the first blank column or column 73 is
reached.
Comments or Remarks
Comments or remarks are written between the
end of the address field and column 73.
Identification or
Columns 73-80 are treated as comment by
Sequence Number COMPASS.
8-18