Difference between revisions of "FAQ"
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(→How can I write to port 0x80 from userspace?: backlink) |
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==== Top Hat Flash ==== | ==== Top Hat Flash ==== | ||
A similar function is achieved by the "'''top hat flash'''" which comes at no extra cost with many Elitegroup mainboards like KN3 with MCP55 southbridge. After bootup, it can manually be lifted off the original BIOS chip, so the original BIOS can be reflashed after a failure. /rst is wired to /oe on the spare chip otherwise 1:1. | A similar function is achieved by the "'''top hat flash'''" which comes at no extra cost with many Elitegroup mainboards like KN3 with MCP55 southbridge. After bootup, it can manually be lifted off the original BIOS chip, so the original BIOS can be reflashed after a failure. /rst is wired to /oe on the spare chip otherwise 1:1. top hat flash is equipped with a Winbond W39V040AP FWH. It may rely on particular circuitry on the mainboard to operate. | ||
[[Image:Top_hat_flash.JPG|thumb|right|Top Hat Flash, PCB side to flip over soldered-on PLCC.]] | [[Image:Top_hat_flash.JPG|thumb|right|Top Hat Flash, PCB side to flip over soldered-on PLCC.]] | ||