
Entering Debugger Command Lines
A numeric value may also be expressed as a string literal of up to four characters. The string literal must begin and end with the single quote mark ('). The numeric value is interpreted as the concatenation of the ASCII values of the characters. This value is
String | Numeric Value |
Literal | (In Hexadecimal) |
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'A' | 41 |
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'ABC' | 414243 |
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'TEST' | 54455354 |
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Evaluation of an expression is always from left to right unless parentheses are used to group part of the expression. There is no operator precedence. Subexpressions within parentheses are evaluated first. Nested parenthetical subexpressions are evaluated from the inside out.
Valid expression examples:
Expression | Result (In Hex) | Notes |
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FF0011 | FF0011 |
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45+99 | DE |
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&45+&99 | 90 |
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@35+@67+@10 | 5C |
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%10011110+%1001 | A7 |
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88<<4 | 880 | shift left |
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AA&F0 | A0 | logical AND |
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The total value of the expression must be between 0 and $FFFFFFFF.
Address as a Parameter
Many commands use addr as a parameter. The syntax accepted by 187Bug is similar to the one accepted by the M88000
5 |