Memory upgrade for the Roland S770

The S770 uses custom expander board Roland part #RAS770 and 30 pin SIMM1 @ 100ns or faster. OR Roland part #RAS750 and 30 pin SIMM470 @ 100ns or faster. 2Mb stock, then you must install an RAS750 or RAS770 before you install any SIMMs. 14 memory slots on the RAS770 and 4 memory slots on the RAS750. Can be upgraded to 16Mb via (14) SIMM1 on RAS770 and 2Mb on logic board OR can be updated to 18Mb via (4) SIMM470 on RAS750 and 2Mb on logic board. SIMMs must be installed in groups of four.

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