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Permit vertical scrolling by amounts smaller than a character row. |
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Fixed the screen size calculation for modes employing line spacing. |
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Added spacing between character rows and fixed the number of rows in the modes involved. |
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Changed the program architecture to involve an external screen update loop |
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Added a module which simulates the video functions of the Acorn Electron ULA. |
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Some documentation of the Acorn Electron ULA and discussion of potential enhancements. |
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