Command: Fill words of main memory with a value.
((PUB ┆ PRI))
WORDFILL (StartAddress, Value, Count )
- StartAddress is an expression indicating the location of the first word of memory to fill with Value.
- Value is an expression indicating the value to fill words with.
- Count is an expression indicating the number of words to fill, starting with StartAddress.
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Explanation
WORDFILL is one of three commands (BYTEFILL, WORDFILL, and LONGFILL) used to fill blocks of main memory with a specific value. WORDFILL fills Count words of main memory with Value, starting at location StartAddress.
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Using WORDFILL
WORDFILL is a great way to clear large blocks of word-sized memory. For example:
| Code Block |
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VAR |
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word Buff[100] |
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PUB Main |
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wordfill(@Buff, 0, 100) 'Clear Buff to 0 |
The first line of the Main method, above, clears the entire 100-word (200-byte) Buff array to all zeros. WORDFILL is faster at this task than a dedicated REPEAT loop is.