7 ms·

> The GP is simply wrong on many/most of its technical claims I concur. Also regarding: ACPI, there often is an auxiliary microcontroller used to do power mana

by zkms 9y ago

> The GP is simply wrong on many/most of its technical claims I concur. Also regarding: ACPI, there often is an auxiliary microcontroller used to do power management and keyboard interfacing called "embedded controller" (sometimes there's also a mysterious ASIC, part numbers for them include Rohm BU77700KVT Toshiba TB62D515FG,TB62501F) that lives on some SMBus and with which the ACPI implementation, running on the main processor, talks with.

TD-Linux 9y ago
On newer Thinkpads, the firmware for the EC is on the same SPI Flash as the ME firmware, but on a different partition. The EC is an entirely separate chip (labeled ThinkEngine) and by virtue of being only on SMBus is a lot less dangerous.