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Extended 80 Column

The Extended 80 Column card was released in several versions. The Memory Master is an early model, reduced-chip substitute, for Apple's Extended 80-Column card, providing 80 columns + 64K RAM. The Rev A Extended 80-Column Card, or the Qutron-1, is a second generation revision.

Memory Master Memory Master Extended 80 Column Extended 80 Column Extended 80 Column - Rev A Extended 80 Column - Rev A Extended 80 Column - Rev B Extended 80 Column - Rev B

Manuals & files

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Source page: https://ae.applearchives.com/apple_e/extended_80column/