【討論】Intel的C1E是怎麼來的？

[mailrapid]

我們知道C1E是Enhanced Halt State，
可是為什麼叫做C1E呢？這是怎麼來的？

[Axel_K]

When transferring in from a halt state (C1), the enhanced low-power state 130 may be called a C1E state.

When transferring in from a stop grant state (C2), the enhanced low-power state 130 may be called a C2E state.

[Axel_K]

再補充
C0: The CPU is in a fully operational state.

C1: The CPU is in a halted state, having executed a halt instruction and awaiting an interrupt.

C2: The CPU is in a "stop grant" state, a low power state in which the CPU cache can still be snooped.

C3: The CPU is in a "stop clock" state, a low power state such that the CPU's cache cannot be snooped.

所以C1 Enhanced就變成C1E

[mailrapid]

Thank you, I got it.
Since we have known S3 and S4 can be tested under Windowes, but how to test C1, C2 or C3?

[Axel_K]

呵
應該感謝你,本來我也不知道
因為你問了,我也感到好奇
才去查的

至於如何測試C1, C2 or C3
呵,我也不知道
就請路過的前輩回答了