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Apple IIc
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===Memory Expansion fix (ROM version '4')=== In January 1988, a new ROM firmware update was issued to address bugs in the new memory-expandable IIc. Changes include better detection of installed RAM chips, correction of a problem when using the serial modem port in terminal mode, and a bug fix for keyboard buffering. The ROM upgrade was available free of charge only to owners of the memory expansion IIc. This was the final change to the Apple IIc,a nd superseded that September by the '''[[Apple IIc Plus]]''' (identified as ROM version '5').
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