"WohMart.COM is proud to announce the Yamaha SY99 8MB Magic Memory Board (MMB) is now available!
This is an all-new designed-from-scratch 8 megabyte sample/MDR expansion board for the SY99. It installs under the bottom cover, and uses 2 of the connectors on the DM2 circuit board. It also needs 2 extra signals, taken from an IC on the board - so installation requires an intermediate level of technical skill (soldering to fine-pitch SMT ICs skills are necessary).We will also be supplying upgrade EPROMs and CPUs if your SY99 needs them. Because blank CPUs are very hard to obtain, these do come at a premium price. If you already have v1.57 on your SY99, you only need our customised EPROM. Be sure to read the instructions on the order page carefully, and select the correct version when placing your order.
Full details, including installation instructions at the order page, [here]. The first batch (extremely limited quantities) will be shipping next month. Batch 2 will ship early next year."
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