This article is from the Apple II Csa2 FAQ, by Jeff Hurlburt with numerous contributions by others.
Bank1: Sw 1-7 -> Change to OPEN if there is a memory card that uses the
"Langauge Card bank switching technique". (Normally CLOSED)
Bank1: Sw 1-7 -> Change to OPEN if the plug in card must be accessed at 1 MHz
(Normally CLOSED. OPEN for Floppy diskette controllers)
Switch 8 on both Banks: Sets the power up speed of Transwarp
Bank1 Bank2
3.6 MHz OPEN OPEN <<Normal>>
1.7 MHz CLOSED OPEN
1 MHz OPEN CLOSED
1 MHz CLOSED CLOSED
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