The Dragon, like the Radio Shack Color Computer, is an implementation of the Motorola MC6883 / 74LS783 Synchronous Address Multiplexer (SAM) datasheet, including the MC6847 Video Display Genetrator (The SAM can also be used without the VDG, as seen in the Sardis on my main 6809 page).
My Dragon. I don't have a top cover and the "2" key is damaged. I'm thinking it's an Issue 2A board maybe, for what it's worth
Dragon 32 Block Diagram.
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