11.3  TOS Keyboard shortcuts                                      CT60

CTRL:          If pressed before the Atari logo, jump the init
               of the clock generator (CTCM) and the bios PCI (CTPCI).
               Boot without AUTO folder and ACC.
ALT:           If pressed before the Atari logo, jump the init
               of the clock generator (CTCM) and the bios PCI (CTPCI).
               Remove cache if pressed before the SDRAM init.
               Boot without disk if pressed after.
SHIFTL-SHIFTR: Boot without SDRAM if pressed before the Atari logo.
SHIFTL:        Displays infos about the SDRAM module.
CTRL-ALT-UNDO: NVM and Flash Parameters init if pressed during the
               memory test until the Reset. You need to set the delay
               at boot to 60 seconds with the configuration CPX.
CTRL-ALT-
SHIFTL-SHIFTR: Start the Atari Diagnostics if pressed before the Atari
               logo (if not overwrited by drivers.hex).