4 ms·
So what jwatte said is wrong? I don't know such details about x86. I was thinking mainly of ARM and MIPS.
by mansr 15y ago
So what jwatte said is wrong? I don't know such details about x86. I was thinking mainly of ARM and MIPS.
- psykotic 15y agoNo, he was referring to the 32-bit to 64-bit mode switch. I was talking about entering 32-bit protected mode from real mode for the first time, typically right after boot-up. As another posted mentioned, once you're in protected mode, you can go back to "fake" real mode (e.g. an MS DOS program running on Windows) with a segment descriptor based jump, which is consistent with the manner of x64's mode switching.