Difference between revisions of "Developer Manual/Tools"

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(→‎Top Hat Flash: too bad it is not more common yet)
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A similar function is achieved by the '''Top Hat Flash''' which comes at no extra cost with many Elitegroup, and some GIGABYTE and Albatron mainboards like ECS KN3 SLI2 Extreme.
A similar function is achieved by the '''Top Hat Flash''' which comes at no extra cost with many Elitegroup, and some GIGABYTE and Albatron mainboards like ECS KN3 SLI2 Extreme.
As you can guess from the photo to the side, it is two plcc sockets soldered together. The upper one carries a spare BIOS chip as a fallback / failsafe secondary bootable BIOS. By means of some 'obscure' cicuitry, the additional, secondary chip is being booted from, if you manually press / stick the TOP HAT FLASH onto your primary BIOS chip on the mainboard. Sadly, this simple technique does not seem to work with other boards right away.


After bootup, it can manually be lifted off the original BIOS chip, so the original BIOS can be reflashed after a failure. The '''RST#''' pin is wired to '''OE#''' on the spare chip, otherwise it's wired 1:1. Top Hat Flash is equipped with a Winbond W39V040AP FWH. It may rely on particular circuitry on the mainboard to operate.
After bootup, it can manually be lifted off the original BIOS chip, so the original BIOS can be reflashed after a failure. The '''RST#''' pin is wired to '''OE#''' on the spare chip, otherwise it's wired 1:1. Top Hat Flash is equipped with a Winbond W39V040AP FWH. It may rely on particular circuitry on the mainboard to operate.

Revision as of 06:35, 2 December 2010