Option Rom Messages; Interrupt 19 Capture - Biostar TZ77B Manual

TZ77B/TZ75B/T77 UEFI BIOS Manual
GateA20 Active
Upon Request – GA20 can be disabled using BIOS services. Always – do not allow
disabling GA20; this option is useful when any RT code is executed above 1MB
Options: Upon Request (Default) / Always

Option ROM Messages

This item sets the display mode for Option ROM.
Options: Force BIOS (Default) / Keep Current

Interrupt 19 Capture

Interrupt 19 is the software interrupt that handles the boot disk function. When set
to Enabled, this item allows the option ROMs to trap interrupt 19.
Options: Disabled (Default) / Enabled
CSM Support
This item enables / disables CSM Support. If Auto is selected, based on OS, CSM
will be enabled / disabled automatically.
Options: Enabled (Default) / Disabled / Auto
BIOS Flash protection
While enabled, it can't flash write and flash erase by SMI.
Options: Enabled (Default) / Disabled
Boot Success Beep
When this item is set to Enabled, BIOS will let user know boot success with beep.
Options: Enabled (Default) / Disabled
UEFI Boot
This option enables/disables boot from the UEFI Devices.
Options: Disabled (Default) / Enabled
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