[Verse 1] When your program hits sixteen kilobytes The processor starts to cry Physical addresses running thin Time to segment and divide Bank switching flips the memory door Overlay frames slide left and right Virtual pages masquerade As infinite address delight [Chorus] Map it, swap it, overlay the banks Segment registers hold the ranks Virtual memory tricks the mind Sixteen becomes sixty-four combined Switch the context, flip the page Maximum space in minimum cage Overlays dancing in and out That's what tiny systems are about [Verse 2] Page tables pointing to the disk When RAM cannot contain Demand paging pulls the code Only when the CPU complains Overlay manager keeps the score Which segments live in precious space Thrashing happens when you swap Too much data, frantic pace [Chorus] Map it, swap it, overlay the banks Segment registers hold the ranks Virtual memory tricks the mind Sixteen becomes sixty-four combined Switch the context, flip the page Maximum space in minimum cage Overlays dancing in and out That's what tiny systems are about [Bridge] MMU translates the lies Logical becomes physical surprise Base plus offset equals real Memory protection makes the deal Fragmentation splits apart Compaction mends the scattered heart [Verse 3] Overlapping windows share the view Code and data interleaved Far pointers cross the boundaries Near pointers stay naive Expanded memory specification Banked memory salvation Every byte becomes precious gold In systems from the ancient fold [Chorus] Map it, swap it, overlay the banks Segment registers hold the ranks Virtual memory tricks the mind Sixteen becomes sixty-four combined Switch the context, flip the page Maximum space in minimum cage Overlays dancing in and out That's what tiny systems are about [Outro] When constraints become your teacher Memory mapping is the feature Overlays unlock the door To computational abundance more
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