(To boot your IIc at 'regular', 1MHz, speed, include the Escape key in the usual boot ... the IIgs, also allows daisey chaining the GS Apple 3.5" drive along with 5.25" drives. ... A few IIe models produced for third parties may have some other special-logo key in ... The manual for the ][ and ][ is the Apple ][ Reference Manual.
SPCL-2380 SPEED BREAKER.pdf - Google Drive
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