Propeller Manual

LONGFILL – Spin Language Reference
Page 134 · Propeller Manual v1.1
LONGFILL
Command: Fill longs of main memory with a value.
((PUB ┆ PRI))
LONGFILL(StartAddress, Value, Count )
• StartAddress is an expression indicating the location of the first long of memory to fill
with Value.
•
Value is an expression indicating the value to fill longs with.
•
Count is an expression indicating the number of longs to fill, starting with
StartAddress.
Explanation
LONGFILL is one of three commands (BYTEFILL, WORDFILL, and LONGFILL) used to fill blocks of
main memory with a specific value.
LONGFILL fills Count longs of main memory with Value,
starting at location StartAddress.
Using LONGFILL
LONGFILL is a great way to clear large blocks of long-sized memory. For example:
VAR
long Buff[100]
PUB Main
longfill(@Buff, 0, 100) 'Clear Buff to 0
The first line of the Main method, above, clears the entire 100-long (400-byte) Buff array to
all zeros.
LONGFILL is faster at this task than a dedicated REPEAT loop is. T