Command: Fill bytes of main memory with a value.

((PUB ┆ PRI))
   BYTEFILL (StartAddress, Value, Count )

• StartAddress is an expression indicating the location of the first byte of memory to fill with Value.
• Value is an expression indicating the value to fill bytes with.
• Count is an expression indicating the number of bytes to fill, starting with StartAddress.

Explanation

BYTEFILL is one of three commands (BYTEFILL, WORDFILL, and LONGFILL) used to fill blocks of main memory with a specific value. BYTEFILL fills Count bytes of main memory with Value, starting at location StartAddress.

Using BYTEFILL

BYTEFILL is a great way to clear large blocks of byte-sized memory. For example:

VAR
  byte Buff[100] 

PUB Main
  bytefill(@Buff, 0, 100)        'Clear Buff to 0 

The first line of the Main method, above, clears the entire 100-byte Buff array to all zeros. BYTEFILL is faster at this task than a dedicated REPEAT loop is.