Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_70704 ( "Model" text, "Floating point" text, "Decimal" text, "Byte string" text, "Memory map" text, "Max memory (kwords)" real )

### Question ###
On a Sigma 9 with a standard byte string and more than 128 max memory, what is the value of the memory map?

### Accurate SQL ###

SELECT "Memory map" FROM table_70704 WHERE "Byte string" = 'standard' AND "Max memory (kwords)" > '128' AND "Model" = 'sigma 9'