Table schema:
CREATE TABLE table_name_23 (byte_string VARCHAR, max_memory__kwords_ VARCHAR, floating_point VARCHAR, memory_map VARCHAR, decimal VARCHAR)

Question: What is the value for the byte string when the memory map, decimal, and floating points are all standard and the max memory is smaller than 512?
SQL: SELECT byte_string FROM table_name_23 WHERE memory_map = "standard" AND decimal = "standard" AND floating_point = "standard" AND max_memory__kwords_ < 512