Action
Fills a block of memory with a given value
Syntax
MEMFILL source, bytes, value
Remarks
source |
The first address of the source variable that will be filled. This can be a normal numeric variable or an array like ar(1) |
bytes |
The number of bytes to fill. The range is from 1-65535.
|
value |
This is a byte or numeric constant with the ASCII value to use for the memory filling. To clear an array, use 0. |
There is not check for 0 bytes to copy. When using a variable make sure that it is not zero, since the effect will be that &HFFFF bytes will be filled.
MEMFILL intended use is to clear an array or to fill an array quickly.
To clear an array use a value of 0.
See also
ASM
CALLS _MEM_FILL in mcs.lib
Example
$regfile = "m1280def.dat"
$crystal = 8000000
$hwstack = 64
$swstack = 64
$framesize = 64
$baud = 19200
Config Base = 0 'array start at 0
Dim Ar(100) As Byte , X As Byte
Print "MEMFILL test"
'fill array/memory with ASCII A
Memfill Ar(1) , 10 , 65 'skip the first entry so it remains 0
Do
Print X ; "->" ; Ar(x)
Incr X
Loop Until X = 10
End