This Acorn Electron has a Turbo Boards fitted. This addition moves the lowest 8 kB of RAM outside of reach of the ULA, allowing the CPU to always access it at 2 MHz. The tradeoff is that the screen cannot be located in that 8 kB. In practice the operating system ROMs always put the screen into the top 24 kB and as a result only broke compatibility with around 2% of software.
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This exhibit has a reference ID of CH36387. Please quote this reference ID in any communication with the Centre for Computing History.
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