Option Ram Circuit - Casio QT-2000 Service Manual

5-6. Option RAM circuit

Standard memory capacity : 384 KB
To expand the memory capacity, put the option RAM chip on RAM1 or RAM2 position
Its convination is as follows;
Memory capacity
384KB
512KB
1MB
RAM530 : 1Mbits RAM (CXK581000P-10L)
RAM610 : 4Mbits RAM (CXK584000P-10LL)
Standard RAM1
(Location : IC39)
384KB Nil
384KB RAM530
384KB RAM530
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RAM2
(Location : IC35)
Nil
Nil
RAM610