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BBC BASIC Error Messages Data Sheet
The table below shows the error messages generated by the BASIC interpreter and their corresponding error codes.
When using ONERROR to trap errors, it can be useful to include the following which will inform you of any error that you have not allowed for. This will show the error in the format error at line line.
REPORT:PRINT;" at line ";ERL
| ERR code | Error message | Likely explanation |
|---|---|---|
| 1 | Out of range | ??? |
| 4 | Mistake | Probably a typing error such as a command in lower case |
| 5 | Missing , | A parameter has been left out of a command |
| 6 | Type mismatch | You have used a string instead of a number as a command's parameter or vice-versa |
| 7 | No FN | BASIC has met a DEF FN statement but you have not called the FN |
| 9 | Missing " | One of the quotes has been missed out of a statement |
| 10 | Bad DIM | The array you have tried to DIM has already been defined. Put DIM's right at the start of a program |
| 11 | DIM space | There is not enough memory for the array to be defined |
| 12 | Not LOCAL | The variable you have used in a PROC or FN is used elsewhere in the program |
| 13 | No PROC | BASIC has met a DEF PROC statement but you have not called the PROC |
| 14 | Array | The array has not been defined by a DIM statement |
| 15 | Subscript | You have addressed a cell in the array that does not exist |
| 16 | Syntax error | You are using a command incorrectly |
| 17 | Escape | The STOP key has been pressed |
| 18 | Division by zero | You have divided a number by 0, which equals infinity! |
| 19 | String to long | There are too many characters in the string and they can't all be stored |
| 20 | Too big | The number is too large to be stored |
| 21 | -ve root | You have tried to SQT a negative number |
| 22 | Log range | A log cannot be taken of the number |
| 23 | Accuracy lost | The result of the mathematical function is no longer accurate |
| 24 | Exp range | The exponent is too large |
| 26 | No such variable | The variable has not been defined |
| 27 | Missing ) | The number of opening and closing brackets does not match |
| 28 | Bad HEX | The hexadecimal number is invalid. Valid characters are 0 to 9 and A to F |
| 29 | No such FN/PROC | The FN or PROC you called has not been DEFined |
| 30 | Bad call | The machine code routine does not exist |
| 31 | Arguments | The number of parameters supplied to a FN or PROC is not the same as the number defined in the DEFinition |
| 32 | No FOR | You have used a NEXT to end a loop which was not begun |
| 33 | Can't match FOR | The loops are not nested correctly - you may have jumped out of a loop. |
| 34 | FOR variable | You have left out the loop variable in a FOR statement |
| 36 | No TO | You have left out the TO in a FOR statement |
| 38 | No GOSUB | RETURN has been found, but no GOSUB was called |
| 39 | ON syntax | The wrong commands have been used with the ON command |
| 40 | ON range | The number supplied to an ON statement exceeds the number of branches supplied |
| 41 | No such line | The line number in a GOTO, GOSUB or ON does not exist |
| 42 | Out of DATA | There is no data in any DATA lines left to READ |
| 43 | No REPEAT | UNTIL has been found when there has been no REPEAT |
| 45 | Missing # | In filing commands the # has been left out |
| 255 | Sorry | The command is not supported on the NC - examples are MODE, COLOR, *FX, INKEY(-x) |
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