_MEMPUT

The _MEMPUT statement writes data to a portion of a designated memory block at an OFFSET position.

Syntax

_MEMPUT memoryBlock, bytePosition, sourceVariable [AS type]

memoryBlock is a _MEM variable type memory block name created by _MEMNEW or the _MEM function.
bytePosition is the memoryBlock.OFFSET start position plus any bytes needed to read specific values.
The sourceVariable type designates the size and bytePosition it should be written to. It can be a variable, array or user defined type.
bytePosition can be converted AS a specific variable type before being written to the memoryBlock as bytes.

The _MEMPUT statement is similar to the PUT file statement, but bytePosition is required.
The memoryBlock.OFFSET returns the starting byte position of the block. Add bytes to move into the block.
The variable type held in the memory block can determine the next byte position to write a value.
LEN can be used to determine the byte size of numerical or user defined variable types regardless of the value held.
STRING values should be of a defined length. Variable length strings can actually move around in memory and not be found.

Example: _MEMPUT can be used just like POKE without DEF SEG.

DIM o AS _MEM o = _MEM(d&) _MEMPUT o, o.OFFSET + 1, 3 AS _UNSIGNED _BYTE 'POKE v = _MEMGET(o, o.OFFSET + 1, _UNSIGNED _BYTE) 'PEEK PRINT v 'prints 3 PRINT d& 'print 768 because the 2nd byte of d& has been set to 3 or 3 * 256